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Hercules Hot Tub Manual
Posted:adminHOT SPRING OWNER'S MANUALS. HIGHLIFE ® OWNERS MANUALS Downloads. The2020 Highlife Collection Owner's Manualwill help you understand your hot tub's features, and answer questions you might have regarding spa operation, water care, and maintenance. There is also a troubleshooting section included for your convenience. The Therm 240V 4.0KW Hercules Spa Flo Thru Heater (C2400-0315) is in stock and ready to ship. Refer to the owner's manual for all the coverage details and claims. Has your spa heater failed you, and left you sitting in a not-so-hot tub?
Are you struggling to replace your hot tub’s expensive and hard to find circuit board or topside controller? Instead of hauling your old spa off to the dump, consider installing an entirely new control system!
Installation is simple for someone with average mechanical skills. You could save thousands of dollars over buying new parts for aging equipment.
Let’s take a closer look at identifying and selecting a new spa control kit for your hot tub.
Electrical wiring and repairs can be dangerous, especially around water, and must be performed by a qualified electrician or spa technician. Shut off electrical power to the hot tub or pool at the service panel prior to any inspections or work.DISCLAIMER
What is a Control System?
The control system, or spa pack, is the brain of the hot tub. This nerve center controls the functions and equipment in the spa, like the jet pumps, filtration time, and heater.
There are two types of control systems used in hot tubs: electronic, digital type systems and older-style mechanical air controls.
Digital Systems
Digital controls are solid state computer-controlled systems. The circuit board inside can run sophisticated filtration cycles and onboard diagnostics.
The control keypad on top of the spa allows communication with the control pack. When any issues arise, Error Codes will display.
Air Systems
Non-digital air systems have buttons that send a puff of air to switches, turning each function on or off. These pneumatic switch type controls were used on the early tubs of the 1970’s through 1990’s. While they’re still available, most air systems have been replaced by digital controls.
If your tub has an old air system, you can definitely update your spa with digital controls.
How Do I Know if I Have a Digital or Air System?
An easy way to tell the difference between digital and air systems is to look at the keypad connection.
Digital systems will have one electrical cord extending from the keypad to the main control pack.
An air system will have 1/8” vinyl tubes connecting each button to the control system, in addition to any electrical cords. These tubes are similar to those used in fish tanks or medical drip systems.
How Do I Choose the Right Control System?
When replacing the entire brain of a hot tub, ensure the heater, topside and physical dimensions of the system fit.
Heater Types
The style of heater that your spa already has plays a critical role when choosing a replacement control system. There are two basic heater types: High Flow and Low Flow.
- High Flow heaters have 1.5” to 2” plumbing and are fed by a pump with a flowrate of 25 gallons per minute minimum. The pump must be at least 1.5”, and be either a dedicated, single-speed circulation or a dual-speed jet pump.
- Low Flow heaters have ¾” to 1” plumbing with a dedicated 24-hour circulation pump that flows 10-20 gallons per minute. These pumps have a plumbing size of ¾” to 1”.
The new control system you choose will include a new heater. The plumbing and existing pumps must match up to the new pack to avoid damage to your new system.
Components
Great! You‘ve decided on digital or air controls and selected the correct heater type. The next step is to determine the number of pumps and other circuits your tub needs.
Determine what components your tub has by following each cord attached to the control system to its respective component. Once you’ve located each component, note the voltage, which will be listed on its data label.
Once you know how many pumps/blowers your tub has and what kind of heater, you can select a control system.
We’ll use your voltage selections to pre-configure the system for an easy installation.
Setup and Installation
All control system installations are a little different, but here’s a general overview of the steps involved.
Caution: Make certain the power is disconnected before proceeding. On 240V spas, shut-off the breaker at the main panel servicing the house, and the GFCI Sub-Panel servicing the spa. On 120V spas, unplug spa from the receptacle.
- Open spa equipment access panel.
- Disconnect incoming power cord from equipment system.
- Drain the hot tub.
- Disconnect the electric and component cords from control system (pump, blower, etc.).
- Disconnect and remove the topside controller
Note: Most topsides are attached using silicone sealant or double stick tape. Oftentimes, using fishing line or dental floss to get in between the shell of the tub and the topside helps.
- Disconnect the plumbing from the heater.
- Remove the control system.
- Take an assessment of the pumps and other components. You’ll want to determine whether they can be reused or should be replaced.
- If replacing, install the new pump(s). Note: EasyPak systems are designed to be connected to the discharge end of the pump. If plumbing cannot be manipulated to achieve this configuration, a flow switch kit will be required.
- If the tub has an air blower, connect it to the plumbing. Note: Always install a new blower check valve.
- Install the new topside controller using the supplied adapter plate if necessary.
- Install the control system and heater.
- Connect the topside controller and component power cords to the control system.
- Make necessary PVC cement connections and reconnect all plumbed components.
- Refill the spa through the filter opening. Note: If your source water is from a well, or has other impurities, use a PreFresh hose end spa pre-filter.
- Bleed any air from the plumbing by loosening the intake pump union slightly until water begins to leak out. Allow water to leak for 5 - 10 seconds, then retighten the union. This will prime the pump and prevent air locks or heater dry-fire.
- Double check all electrical and plumbing connections.
- Power up the control system.
- Run the tub and inspect for leaks.
- Set heat to desired temperature.
Notes
Wiring: Electrical hookup must be performed by a qualified electrician in accordance with local codes. All EasyPak 240 Volt control systems must be connected to an approved GFCI protected 4 wire electrical service.
120 Volt systems must be served by a grounded, GFCI protected circuit. Alternatively, they can have an optional inline GFCI cord installed, also properly grounded.
Whether the control system uses terminal blocks or wire nuts for electrical connections, ensure all connections are tight. Always follow the manufacturers torque specifications.
Electrical: Control systems are designed to operate on 120VAC or 240VAC. The primary reason for 240 Volt controls systems is to provide faster heating.
In the case of the EasyPak, 240 Volt service will operate the heater at that voltage. The pumps and other components can be configured to operate at either 120 Volt or 240 Volt.
If 120 Volt service is selected, the heater and all other circuits must be configured for 120 Volt. It’s worth noting, 120 Volt systems will not run the jets and the heater at the same time.
Plumbing: EasyPak control systems are designed to be connected to the discharge end of the pump. If plumbing cannot be manipulated to achieve this, a flow switch kit will be required.
Other controls, like Balboa systems with M7 technology, can be plumbed to either the intake or discharge of the pump.
The Spa Depot assumes no liability for the use nor makes any warranty as to the accuracy, electrical code or building code compliance, suitability or usefulness of the information provided herein. This information is not intended to replace or substitute for information contained in equipment owner’s manuals. YOU EXPRESSLY AGREE TO HOLD THE SPA DEPOT AND ITS EMPLOYEES HARMLESS FOR ANY PROPERTY DAMAGE, PERSONAL INJURY AND/OR DEATH, OR ANY OTHER LOSS OR DAMAGE THAT MAY RESULT FROM YOUR USE OF THE INFORMATION PROVIDED. No advice or information, whether oral or written, obtained by you from this web site or our employees shall create any warranty not expressly made herein. Reader agrees to assume all risk resulting from the application of any of the information provided herein. By using this web site, including any content contained therein, the visitor agrees that the use of this web site and its information product is entirely at his/her own risk. CONSULT WITH A LICENSED ELECTRICIAN, QUALIFIED SPA TECHNICIAN, AND/OR LICENSED CONTRACTOR AS APPROPRIATE.
ReadELECTRICAL CAUTION STATEMENT
Mark Bolling
Newport News, VA
Ya hanan ya manan ya kabyr. Mustadrak ala al-Sahihayn lil Haakim, Vol. Al-Jami’ al-Saghir, Page 444, Hadith 721926. If Allah blesses someone with (true) guidance by you, it is better than the kingship of the entire world for you. 4, Page 223, Hadith 743827. If anyone of you gets fever, sprinkle cold water on him in the morning for 3 days.
Wondering what your spa is trying to tell you? Below is a list of common error codes from the top manufacturers of control equipment for hot tubs.
Note: The control system brand name is usually different from the hot tub brand name. You can often determine the make of the control system by looking inside the spa's equipment area. Pictured here is a Balboa® control system used in Belize Spas brand.
Disclaimer: Although we hope this information will be useful, error codes are subject to change without notice. We make no representation as to the accuracy or completeness of this data and aren't responsible for errors or omissions. Refer to your owner's manual.
Error & LCD Window Message Codes:
ACC (Applied Computer Controls)
CoLd = Temperature in the spa heater housing is below 40° F. Status of the heater element is unknown. The low speed pump or circ pump will operate continuously until the temperature rises above 45° F.
OH = Over heat. The spa is at a temperature above 108° . Do not use spa when temperature is flashing or the OH message is displayed.
HLoH = Hi Limit Over Heat. Hi limit sensor is disconnected or shorted or the spa temperature is above 112° F.
SEoP = Sensor open or disconnected. Heater disabled but the spa is operational.
SESH = Sensor short, nonfunctional. Heater disabled but the spa is operational.
PSoC = Pressure switch open with circulating pump.
PSoL = Pressure switch open with low pump.
PSoH = Pressure switch open with high pump.
ToE = Time out error. Rare system error. Spa unusable. Contact ACC.
Balboa
(used by Belize Spas and many other hot tubs)
pd = Power supply, unit running on battery backup
OH = Sensors reading 112-118° F.
OHH = Overheat. Spa has shut down. One sensor has detected 118° F at heater.
OHS = Overheat. Spa has shut down. One sensor has detected 110°F.
Flo = Improper flow or pressure switch malfunction
Cool = Water temp 20° below set point
ICE = Potential freeze condition has been detected
Sn1 = Hi-limit sensor malfunction
Sn3 = Temp sensor malfunction
SnA = Spa is shut down. Sensor plugged into jack A is not working.
Snb = Spa is shut down. Sensor plugged into jack B is not working.
SnS = Sensors out of balance. If alternating with temp, may be temporary condition. If display shows only this message (blinking) spa is shut down.
HFL = Substantial difference between temperature sensors detected. Could indicate a flow problem.
LF = Persistent low flow problems. (Displays on the 5th occurrence of 'HFL' message with 24 hours). Heater is shut down, but other spa functions run normally.
dr = Inadequate water detected in heater.
dry = Inadequate water detected in heater. (Displays on third occurrence of 'dr' message). Spa is shut down.
Pr = When spa is first actuated, it will go into Priming Mode.
ILOC = Interlock failure - possible pump or ozone spike .
(---) =Unknown water temperature. (Displays when first powered up after refill).
Std = Spa operating in Standard Mode.
Ecn = Spa operating in Economy Mode.
SE = Spa operating in Standard-in-Economy Mode.
Brett Aqualine
OH = Temp exceeds 118° F
Fr = Freeze condition - temp below 40° F
FL = Pressure switch failure
EO = Shorted temp sensor
E1 = Open temp sensor
E2 = Shorted hi-limit sensor
E3 = Open hi-limit sensor
E4 = Shorted flow switch
E7 = Improper electrical connection
CTI
th1/39 = On startup indicates temperature probe problem.
th2/current temperature = On startup indicates temperature probe problem.
th3/39 = On startup indicates water temperature less than 39° F.
OH = Overheating, water over 112° F. System will restart when temp. drops.
hot = Overheating, water over 112° F. System will restart when temp. drops.
HL = High limit switch tripped.
Dream Maker Hot Tubs
OH = Overheat 108° F, spa is deactivated. Do not enter the water.
FL = Flow. Pressure switch is not working.
SN = Non functional high temperature sensor. Heater is deactivated.
F2 = 4 hours daily filtration
F4 = 8 hours daily filtration
F6 = 12 hours daily filtration
FC = continuous filtration
EasyPak
C = Celsius
CL = Current Time of Day
ECdu = Economy Mode Duration
Econ = Economy Mode Turn On
F = Fahrenheit
Fldu = Filter Cycle Duration
Flon = Filter Cycle Turn On
FLC = Pressure Switch Alarm
FLO = Pressure Switch Alarm
FrEE = Freeze Protection Alarm
HL = High Temperature Alarm
Loc = Panel / Keypad Locked
PrH = Temperature Sensors Alarm
Prr = Temperature Sensors Alarm
Tu = Temperature Set Celsius
Tu = Temperature Set Fahrenheit
Gecko
FLO = Pressure switch failure, switch open
FLC = Pressure switch failure, switch closed
Prr = Temp sensor failure
Prh = Hi-limit sensor failure
HL = Sensor measuring 119° F
FrE = Possible freeze condition detected
Hercules
OH = Spa temp exceeds acceptable limits
FLO = Flow problem
ICE = Freeze condition detected
SN1 = Hi-limit sensor failure
SN2 = Temp sensor failure
Hurricane
PS = Flow or pressure switch failure
SH = Shorted sensor
OP = Open Sensor
LO = Temp below 60° F - freeze
HL = Temp above 118° F
Hydro-Quip
C = Celsius
CL = Current Time of Day
ECdu = Economy Mode Duration
Econ = Economy Mode Turn On
F = Fahrenheit
Fldu = Filter Cycle Duration
Flon = Filter Cycle Turn On
FLC = Pressure Switch Alarm
FLO = Pressure Switch Alarm
FrEE = Freeze Protection Alarm
HL = High Temperature Alarm
Loc = Panel / Keypad Locked
PrH = Temperature Sensors Alarm
Prr = Temperature Sensors Alarm
Tu = Temperature Set Celsius
Tu = Temperature Set Fahrenheit
Jacuzzi Whirlpool
OH = Overheat Protection (Heater is deactivated, pumps low speed is activated).
COOL = Spa water is more than 20° F cooler than the temperature set point.
FLO* = Flow Switch (heater is deactivated. Pump may also be deactivated).
Hold = Panel sensors have been pressed too many times in a short period of time.
HOT = Circuit Board temperature has exceeded acceptable limit.
ICE = Freeze protection. No action is necessary.
I CE2 = Freeze protection. No action is necessary.
PnL = Communication between the panel and circuit board is faulty.
---- = 'Watchdog' (spa is deactivated) A problem has been detected.
Sn1 = Open sensor (heater is deactivated) or Shorted sensor (spa is deactivated).
Sn3 = Open or shorted sensor ( heater disabled).
FLO2 = Closed or shorted flow switch on system startup
Pinnacle
OH = Temperature has exceeded 110° F
SN = Sensor failure
FL = Flow/pressure switch stuck in closed position
Spa Builders
Sn1 = Nonfunctional high temperature sensor. Heater is deactivated.
Sn2 = Nonfunctional temperature sensor. Heater is deactivated.
FL1 = Water flow problem, inhibited or pressure switch malfunction. Check for proper spa water level and ensure pump is primed. Check for clogged filter.
FL2 = Pressure switch problem. Switch closed while pump is deactivated.
COL = Cool condition. If water temperature drops 20°F below set temperature, low speed pump and heater activates to bring temperature within 15° of set temperature.
ICE = Freeze condition. 55°F detected. Low speed pump and heater will activate until spa reaches 65°F.
OH = High temperature condition, has reached 110°F. Do not enter the spa. Low speed pump (and air blower if so equipped) will activate to assist in lowering temperature.
--- = 'Watchdog'. Water temperature has reached 118°F. Entire system is disabled. Contact qualified service technician.
Sundance Spas
ILOC = Interlock failure - possible pump or ozone spike
FLO = Pressure switch malfunction or Flow switch malfunction (system specific)
Hold = Panel buttons pressed to many times to quickly
HOT = PCB temperature above acceptable limit - air blower on
ICE = Potential freeze condition
Pnl = Communication between PCB and panel interrupted
Sn1 = Hi-limit sensor failure
Sn3 = Temp sensor failure
---- = 'Watchdog' (spa is deactivated) A problem has been detected
Vita Spas
HiLi = Water temp over acceptable limit
BJ2P = Pump/Blower purge - normal condition
FP = Freeze protect-temp under acceptable condition
SS=0; SS=S; LS=O; LS=S = Multiple causes; open sensors, bad connection to panel, improper voltage, etc.
James Hirsch
Buffalo, NY
HOT SPRING OWNER'S MANUALS. HIGHLIFE ® OWNERS MANUALS Downloads. The2020 Highlife Collection Owner's Manualwill help you understand your hot tub's features, and answer questions you might have regarding spa operation, water care, and maintenance. There is also a troubleshooting section included for your convenience. The Therm 240V 4.0KW Hercules Spa Flo Thru Heater (C2400-0315) is in stock and ready to ship. Refer to the owner's manual for all the coverage details and claims. Has your spa heater failed you, and left you sitting in a not-so-hot tub?
Are you struggling to replace your hot tub’s expensive and hard to find circuit board or topside controller? Instead of hauling your old spa off to the dump, consider installing an entirely new control system!
Installation is simple for someone with average mechanical skills. You could save thousands of dollars over buying new parts for aging equipment.
Let’s take a closer look at identifying and selecting a new spa control kit for your hot tub.
Electrical wiring and repairs can be dangerous, especially around water, and must be performed by a qualified electrician or spa technician. Shut off electrical power to the hot tub or pool at the service panel prior to any inspections or work.DISCLAIMER
What is a Control System?
The control system, or spa pack, is the brain of the hot tub. This nerve center controls the functions and equipment in the spa, like the jet pumps, filtration time, and heater.
There are two types of control systems used in hot tubs: electronic, digital type systems and older-style mechanical air controls.
Digital Systems
Digital controls are solid state computer-controlled systems. The circuit board inside can run sophisticated filtration cycles and onboard diagnostics.
The control keypad on top of the spa allows communication with the control pack. When any issues arise, Error Codes will display.
Air Systems
Non-digital air systems have buttons that send a puff of air to switches, turning each function on or off. These pneumatic switch type controls were used on the early tubs of the 1970’s through 1990’s. While they’re still available, most air systems have been replaced by digital controls.
If your tub has an old air system, you can definitely update your spa with digital controls.
How Do I Know if I Have a Digital or Air System?
An easy way to tell the difference between digital and air systems is to look at the keypad connection.
Digital systems will have one electrical cord extending from the keypad to the main control pack.
An air system will have 1/8” vinyl tubes connecting each button to the control system, in addition to any electrical cords. These tubes are similar to those used in fish tanks or medical drip systems.
How Do I Choose the Right Control System?
When replacing the entire brain of a hot tub, ensure the heater, topside and physical dimensions of the system fit.
Heater Types
The style of heater that your spa already has plays a critical role when choosing a replacement control system. There are two basic heater types: High Flow and Low Flow.
- High Flow heaters have 1.5” to 2” plumbing and are fed by a pump with a flowrate of 25 gallons per minute minimum. The pump must be at least 1.5”, and be either a dedicated, single-speed circulation or a dual-speed jet pump.
- Low Flow heaters have ¾” to 1” plumbing with a dedicated 24-hour circulation pump that flows 10-20 gallons per minute. These pumps have a plumbing size of ¾” to 1”.
The new control system you choose will include a new heater. The plumbing and existing pumps must match up to the new pack to avoid damage to your new system.
Components
Great! You‘ve decided on digital or air controls and selected the correct heater type. The next step is to determine the number of pumps and other circuits your tub needs.
Determine what components your tub has by following each cord attached to the control system to its respective component. Once you’ve located each component, note the voltage, which will be listed on its data label.
Once you know how many pumps/blowers your tub has and what kind of heater, you can select a control system.
We’ll use your voltage selections to pre-configure the system for an easy installation.
Setup and Installation
All control system installations are a little different, but here’s a general overview of the steps involved.
Caution: Make certain the power is disconnected before proceeding. On 240V spas, shut-off the breaker at the main panel servicing the house, and the GFCI Sub-Panel servicing the spa. On 120V spas, unplug spa from the receptacle.
- Open spa equipment access panel.
- Disconnect incoming power cord from equipment system.
- Drain the hot tub.
- Disconnect the electric and component cords from control system (pump, blower, etc.).
- Disconnect and remove the topside controller
Note: Most topsides are attached using silicone sealant or double stick tape. Oftentimes, using fishing line or dental floss to get in between the shell of the tub and the topside helps.
- Disconnect the plumbing from the heater.
- Remove the control system.
- Take an assessment of the pumps and other components. You’ll want to determine whether they can be reused or should be replaced.
- If replacing, install the new pump(s). Note: EasyPak systems are designed to be connected to the discharge end of the pump. If plumbing cannot be manipulated to achieve this configuration, a flow switch kit will be required.
- If the tub has an air blower, connect it to the plumbing. Note: Always install a new blower check valve.
- Install the new topside controller using the supplied adapter plate if necessary.
- Install the control system and heater.
- Connect the topside controller and component power cords to the control system.
- Make necessary PVC cement connections and reconnect all plumbed components.
- Refill the spa through the filter opening. Note: If your source water is from a well, or has other impurities, use a PreFresh hose end spa pre-filter.
- Bleed any air from the plumbing by loosening the intake pump union slightly until water begins to leak out. Allow water to leak for 5 - 10 seconds, then retighten the union. This will prime the pump and prevent air locks or heater dry-fire.
- Double check all electrical and plumbing connections.
- Power up the control system.
- Run the tub and inspect for leaks.
- Set heat to desired temperature.
Notes
Wiring: Electrical hookup must be performed by a qualified electrician in accordance with local codes. All EasyPak 240 Volt control systems must be connected to an approved GFCI protected 4 wire electrical service.
120 Volt systems must be served by a grounded, GFCI protected circuit. Alternatively, they can have an optional inline GFCI cord installed, also properly grounded.
Whether the control system uses terminal blocks or wire nuts for electrical connections, ensure all connections are tight. Always follow the manufacturers torque specifications.
Electrical: Control systems are designed to operate on 120VAC or 240VAC. The primary reason for 240 Volt controls systems is to provide faster heating.
In the case of the EasyPak, 240 Volt service will operate the heater at that voltage. The pumps and other components can be configured to operate at either 120 Volt or 240 Volt.
If 120 Volt service is selected, the heater and all other circuits must be configured for 120 Volt. It’s worth noting, 120 Volt systems will not run the jets and the heater at the same time.
Plumbing: EasyPak control systems are designed to be connected to the discharge end of the pump. If plumbing cannot be manipulated to achieve this, a flow switch kit will be required.
Other controls, like Balboa systems with M7 technology, can be plumbed to either the intake or discharge of the pump.
The Spa Depot assumes no liability for the use nor makes any warranty as to the accuracy, electrical code or building code compliance, suitability or usefulness of the information provided herein. This information is not intended to replace or substitute for information contained in equipment owner’s manuals. YOU EXPRESSLY AGREE TO HOLD THE SPA DEPOT AND ITS EMPLOYEES HARMLESS FOR ANY PROPERTY DAMAGE, PERSONAL INJURY AND/OR DEATH, OR ANY OTHER LOSS OR DAMAGE THAT MAY RESULT FROM YOUR USE OF THE INFORMATION PROVIDED. No advice or information, whether oral or written, obtained by you from this web site or our employees shall create any warranty not expressly made herein. Reader agrees to assume all risk resulting from the application of any of the information provided herein. By using this web site, including any content contained therein, the visitor agrees that the use of this web site and its information product is entirely at his/her own risk. CONSULT WITH A LICENSED ELECTRICIAN, QUALIFIED SPA TECHNICIAN, AND/OR LICENSED CONTRACTOR AS APPROPRIATE.
ReadELECTRICAL CAUTION STATEMENT
Mark Bolling
Newport News, VA
Ya hanan ya manan ya kabyr. Mustadrak ala al-Sahihayn lil Haakim, Vol. Al-Jami’ al-Saghir, Page 444, Hadith 721926. If Allah blesses someone with (true) guidance by you, it is better than the kingship of the entire world for you. 4, Page 223, Hadith 743827. If anyone of you gets fever, sprinkle cold water on him in the morning for 3 days.
Wondering what your spa is trying to tell you? Below is a list of common error codes from the top manufacturers of control equipment for hot tubs.
Note: The control system brand name is usually different from the hot tub brand name. You can often determine the make of the control system by looking inside the spa's equipment area. Pictured here is a Balboa® control system used in Belize Spas brand.
Disclaimer: Although we hope this information will be useful, error codes are subject to change without notice. We make no representation as to the accuracy or completeness of this data and aren't responsible for errors or omissions. Refer to your owner's manual.
Error & LCD Window Message Codes:
ACC (Applied Computer Controls)
CoLd = Temperature in the spa heater housing is below 40° F. Status of the heater element is unknown. The low speed pump or circ pump will operate continuously until the temperature rises above 45° F.
OH = Over heat. The spa is at a temperature above 108° . Do not use spa when temperature is flashing or the OH message is displayed.
HLoH = Hi Limit Over Heat. Hi limit sensor is disconnected or shorted or the spa temperature is above 112° F.
SEoP = Sensor open or disconnected. Heater disabled but the spa is operational.
SESH = Sensor short, nonfunctional. Heater disabled but the spa is operational.
PSoC = Pressure switch open with circulating pump.
PSoL = Pressure switch open with low pump.
PSoH = Pressure switch open with high pump.
ToE = Time out error. Rare system error. Spa unusable. Contact ACC.
Balboa
(used by Belize Spas and many other hot tubs)
pd = Power supply, unit running on battery backup
OH = Sensors reading 112-118° F.
OHH = Overheat. Spa has shut down. One sensor has detected 118° F at heater.
OHS = Overheat. Spa has shut down. One sensor has detected 110°F.
Flo = Improper flow or pressure switch malfunction
Cool = Water temp 20° below set point
ICE = Potential freeze condition has been detected
Sn1 = Hi-limit sensor malfunction
Sn3 = Temp sensor malfunction
SnA = Spa is shut down. Sensor plugged into jack A is not working.
Snb = Spa is shut down. Sensor plugged into jack B is not working.
SnS = Sensors out of balance. If alternating with temp, may be temporary condition. If display shows only this message (blinking) spa is shut down.
HFL = Substantial difference between temperature sensors detected. Could indicate a flow problem.
LF = Persistent low flow problems. (Displays on the 5th occurrence of 'HFL' message with 24 hours). Heater is shut down, but other spa functions run normally.
dr = Inadequate water detected in heater.
dry = Inadequate water detected in heater. (Displays on third occurrence of 'dr' message). Spa is shut down.
Pr = When spa is first actuated, it will go into Priming Mode.
ILOC = Interlock failure - possible pump or ozone spike .
(---) =Unknown water temperature. (Displays when first powered up after refill).
Std = Spa operating in Standard Mode.
Ecn = Spa operating in Economy Mode.
SE = Spa operating in Standard-in-Economy Mode.
Brett Aqualine
OH = Temp exceeds 118° F
Fr = Freeze condition - temp below 40° F
FL = Pressure switch failure
EO = Shorted temp sensor
E1 = Open temp sensor
E2 = Shorted hi-limit sensor
E3 = Open hi-limit sensor
E4 = Shorted flow switch
E7 = Improper electrical connection
CTI
th1/39 = On startup indicates temperature probe problem.
th2/current temperature = On startup indicates temperature probe problem.
th3/39 = On startup indicates water temperature less than 39° F.
OH = Overheating, water over 112° F. System will restart when temp. drops.
hot = Overheating, water over 112° F. System will restart when temp. drops.
HL = High limit switch tripped.
Dream Maker Hot Tubs
OH = Overheat 108° F, spa is deactivated. Do not enter the water.
FL = Flow. Pressure switch is not working.
SN = Non functional high temperature sensor. Heater is deactivated.
F2 = 4 hours daily filtration
F4 = 8 hours daily filtration
F6 = 12 hours daily filtration
FC = continuous filtration
EasyPak
C = Celsius
CL = Current Time of Day
ECdu = Economy Mode Duration
Econ = Economy Mode Turn On
F = Fahrenheit
Fldu = Filter Cycle Duration
Flon = Filter Cycle Turn On
FLC = Pressure Switch Alarm
FLO = Pressure Switch Alarm
FrEE = Freeze Protection Alarm
HL = High Temperature Alarm
Loc = Panel / Keypad Locked
PrH = Temperature Sensors Alarm
Prr = Temperature Sensors Alarm
Tu = Temperature Set Celsius
Tu = Temperature Set Fahrenheit
Gecko
FLO = Pressure switch failure, switch open
FLC = Pressure switch failure, switch closed
Prr = Temp sensor failure
Prh = Hi-limit sensor failure
HL = Sensor measuring 119° F
FrE = Possible freeze condition detected
Hercules
OH = Spa temp exceeds acceptable limits
FLO = Flow problem
ICE = Freeze condition detected
SN1 = Hi-limit sensor failure
SN2 = Temp sensor failure
Hurricane
PS = Flow or pressure switch failure
SH = Shorted sensor
OP = Open Sensor
LO = Temp below 60° F - freeze
HL = Temp above 118° F
Hydro-Quip
C = Celsius
CL = Current Time of Day
ECdu = Economy Mode Duration
Econ = Economy Mode Turn On
F = Fahrenheit
Fldu = Filter Cycle Duration
Flon = Filter Cycle Turn On
FLC = Pressure Switch Alarm
FLO = Pressure Switch Alarm
FrEE = Freeze Protection Alarm
HL = High Temperature Alarm
Loc = Panel / Keypad Locked
PrH = Temperature Sensors Alarm
Prr = Temperature Sensors Alarm
Tu = Temperature Set Celsius
Tu = Temperature Set Fahrenheit
Jacuzzi Whirlpool
OH = Overheat Protection (Heater is deactivated, pumps low speed is activated).
COOL = Spa water is more than 20° F cooler than the temperature set point.
FLO* = Flow Switch (heater is deactivated. Pump may also be deactivated).
Hold = Panel sensors have been pressed too many times in a short period of time.
HOT = Circuit Board temperature has exceeded acceptable limit.
ICE = Freeze protection. No action is necessary.
I CE2 = Freeze protection. No action is necessary.
PnL = Communication between the panel and circuit board is faulty.
---- = 'Watchdog' (spa is deactivated) A problem has been detected.
Sn1 = Open sensor (heater is deactivated) or Shorted sensor (spa is deactivated).
Sn3 = Open or shorted sensor ( heater disabled).
FLO2 = Closed or shorted flow switch on system startup
Pinnacle
OH = Temperature has exceeded 110° F
SN = Sensor failure
FL = Flow/pressure switch stuck in closed position
Spa Builders
Sn1 = Nonfunctional high temperature sensor. Heater is deactivated.
Sn2 = Nonfunctional temperature sensor. Heater is deactivated.
FL1 = Water flow problem, inhibited or pressure switch malfunction. Check for proper spa water level and ensure pump is primed. Check for clogged filter.
FL2 = Pressure switch problem. Switch closed while pump is deactivated.
COL = Cool condition. If water temperature drops 20°F below set temperature, low speed pump and heater activates to bring temperature within 15° of set temperature.
ICE = Freeze condition. 55°F detected. Low speed pump and heater will activate until spa reaches 65°F.
OH = High temperature condition, has reached 110°F. Do not enter the spa. Low speed pump (and air blower if so equipped) will activate to assist in lowering temperature.
--- = 'Watchdog'. Water temperature has reached 118°F. Entire system is disabled. Contact qualified service technician.
Sundance Spas
ILOC = Interlock failure - possible pump or ozone spike
FLO = Pressure switch malfunction or Flow switch malfunction (system specific)
Hold = Panel buttons pressed to many times to quickly
HOT = PCB temperature above acceptable limit - air blower on
ICE = Potential freeze condition
Pnl = Communication between PCB and panel interrupted
Sn1 = Hi-limit sensor failure
Sn3 = Temp sensor failure
---- = 'Watchdog' (spa is deactivated) A problem has been detected
Vita Spas
HiLi = Water temp over acceptable limit
BJ2P = Pump/Blower purge - normal condition
FP = Freeze protect-temp under acceptable condition
SS=0; SS=S; LS=O; LS=S = Multiple causes; open sensors, bad connection to panel, improper voltage, etc.
James Hirsch
Buffalo, NY
HOT SPRING OWNER'S MANUALS. HIGHLIFE ® OWNERS MANUALS Downloads. The2020 Highlife Collection Owner's Manualwill help you understand your hot tub's features, and answer questions you might have regarding spa operation, water care, and maintenance. There is also a troubleshooting section included for your convenience. The Therm 240V 4.0KW Hercules Spa Flo Thru Heater (C2400-0315) is in stock and ready to ship. Refer to the owner's manual for all the coverage details and claims. Has your spa heater failed you, and left you sitting in a not-so-hot tub?
Are you struggling to replace your hot tub’s expensive and hard to find circuit board or topside controller? Instead of hauling your old spa off to the dump, consider installing an entirely new control system!
Installation is simple for someone with average mechanical skills. You could save thousands of dollars over buying new parts for aging equipment.
Let’s take a closer look at identifying and selecting a new spa control kit for your hot tub.
Electrical wiring and repairs can be dangerous, especially around water, and must be performed by a qualified electrician or spa technician. Shut off electrical power to the hot tub or pool at the service panel prior to any inspections or work.DISCLAIMER
What is a Control System?
The control system, or spa pack, is the brain of the hot tub. This nerve center controls the functions and equipment in the spa, like the jet pumps, filtration time, and heater.
There are two types of control systems used in hot tubs: electronic, digital type systems and older-style mechanical air controls.
Digital Systems
Digital controls are solid state computer-controlled systems. The circuit board inside can run sophisticated filtration cycles and onboard diagnostics.
The control keypad on top of the spa allows communication with the control pack. When any issues arise, Error Codes will display.
Air Systems
Non-digital air systems have buttons that send a puff of air to switches, turning each function on or off. These pneumatic switch type controls were used on the early tubs of the 1970’s through 1990’s. While they’re still available, most air systems have been replaced by digital controls.
If your tub has an old air system, you can definitely update your spa with digital controls.
How Do I Know if I Have a Digital or Air System?
An easy way to tell the difference between digital and air systems is to look at the keypad connection.
Digital systems will have one electrical cord extending from the keypad to the main control pack.
An air system will have 1/8” vinyl tubes connecting each button to the control system, in addition to any electrical cords. These tubes are similar to those used in fish tanks or medical drip systems.
How Do I Choose the Right Control System?
When replacing the entire brain of a hot tub, ensure the heater, topside and physical dimensions of the system fit.
Heater Types
The style of heater that your spa already has plays a critical role when choosing a replacement control system. There are two basic heater types: High Flow and Low Flow.
- High Flow heaters have 1.5” to 2” plumbing and are fed by a pump with a flowrate of 25 gallons per minute minimum. The pump must be at least 1.5”, and be either a dedicated, single-speed circulation or a dual-speed jet pump.
- Low Flow heaters have ¾” to 1” plumbing with a dedicated 24-hour circulation pump that flows 10-20 gallons per minute. These pumps have a plumbing size of ¾” to 1”.
The new control system you choose will include a new heater. The plumbing and existing pumps must match up to the new pack to avoid damage to your new system.
Components
Great! You‘ve decided on digital or air controls and selected the correct heater type. The next step is to determine the number of pumps and other circuits your tub needs.
Determine what components your tub has by following each cord attached to the control system to its respective component. Once you’ve located each component, note the voltage, which will be listed on its data label.
Once you know how many pumps/blowers your tub has and what kind of heater, you can select a control system.
We’ll use your voltage selections to pre-configure the system for an easy installation.
Setup and Installation
All control system installations are a little different, but here’s a general overview of the steps involved.
Caution: Make certain the power is disconnected before proceeding. On 240V spas, shut-off the breaker at the main panel servicing the house, and the GFCI Sub-Panel servicing the spa. On 120V spas, unplug spa from the receptacle.
- Open spa equipment access panel.
- Disconnect incoming power cord from equipment system.
- Drain the hot tub.
- Disconnect the electric and component cords from control system (pump, blower, etc.).
- Disconnect and remove the topside controller
Note: Most topsides are attached using silicone sealant or double stick tape. Oftentimes, using fishing line or dental floss to get in between the shell of the tub and the topside helps.
- Disconnect the plumbing from the heater.
- Remove the control system.
- Take an assessment of the pumps and other components. You’ll want to determine whether they can be reused or should be replaced.
- If replacing, install the new pump(s). Note: EasyPak systems are designed to be connected to the discharge end of the pump. If plumbing cannot be manipulated to achieve this configuration, a flow switch kit will be required.
- If the tub has an air blower, connect it to the plumbing. Note: Always install a new blower check valve.
- Install the new topside controller using the supplied adapter plate if necessary.
- Install the control system and heater.
- Connect the topside controller and component power cords to the control system.
- Make necessary PVC cement connections and reconnect all plumbed components.
- Refill the spa through the filter opening. Note: If your source water is from a well, or has other impurities, use a PreFresh hose end spa pre-filter.
- Bleed any air from the plumbing by loosening the intake pump union slightly until water begins to leak out. Allow water to leak for 5 - 10 seconds, then retighten the union. This will prime the pump and prevent air locks or heater dry-fire.
- Double check all electrical and plumbing connections.
- Power up the control system.
- Run the tub and inspect for leaks.
- Set heat to desired temperature.
Notes
Wiring: Electrical hookup must be performed by a qualified electrician in accordance with local codes. All EasyPak 240 Volt control systems must be connected to an approved GFCI protected 4 wire electrical service.
120 Volt systems must be served by a grounded, GFCI protected circuit. Alternatively, they can have an optional inline GFCI cord installed, also properly grounded.
Whether the control system uses terminal blocks or wire nuts for electrical connections, ensure all connections are tight. Always follow the manufacturers torque specifications.
Electrical: Control systems are designed to operate on 120VAC or 240VAC. The primary reason for 240 Volt controls systems is to provide faster heating.
In the case of the EasyPak, 240 Volt service will operate the heater at that voltage. The pumps and other components can be configured to operate at either 120 Volt or 240 Volt.
If 120 Volt service is selected, the heater and all other circuits must be configured for 120 Volt. It’s worth noting, 120 Volt systems will not run the jets and the heater at the same time.
Plumbing: EasyPak control systems are designed to be connected to the discharge end of the pump. If plumbing cannot be manipulated to achieve this, a flow switch kit will be required.
Other controls, like Balboa systems with M7 technology, can be plumbed to either the intake or discharge of the pump.
The Spa Depot assumes no liability for the use nor makes any warranty as to the accuracy, electrical code or building code compliance, suitability or usefulness of the information provided herein. This information is not intended to replace or substitute for information contained in equipment owner’s manuals. YOU EXPRESSLY AGREE TO HOLD THE SPA DEPOT AND ITS EMPLOYEES HARMLESS FOR ANY PROPERTY DAMAGE, PERSONAL INJURY AND/OR DEATH, OR ANY OTHER LOSS OR DAMAGE THAT MAY RESULT FROM YOUR USE OF THE INFORMATION PROVIDED. No advice or information, whether oral or written, obtained by you from this web site or our employees shall create any warranty not expressly made herein. Reader agrees to assume all risk resulting from the application of any of the information provided herein. By using this web site, including any content contained therein, the visitor agrees that the use of this web site and its information product is entirely at his/her own risk. CONSULT WITH A LICENSED ELECTRICIAN, QUALIFIED SPA TECHNICIAN, AND/OR LICENSED CONTRACTOR AS APPROPRIATE.
ReadELECTRICAL CAUTION STATEMENT
Mark Bolling
Newport News, VA
Ya hanan ya manan ya kabyr. Mustadrak ala al-Sahihayn lil Haakim, Vol. Al-Jami’ al-Saghir, Page 444, Hadith 721926. If Allah blesses someone with (true) guidance by you, it is better than the kingship of the entire world for you. 4, Page 223, Hadith 743827. If anyone of you gets fever, sprinkle cold water on him in the morning for 3 days.
Wondering what your spa is trying to tell you? Below is a list of common error codes from the top manufacturers of control equipment for hot tubs.
Note: The control system brand name is usually different from the hot tub brand name. You can often determine the make of the control system by looking inside the spa's equipment area. Pictured here is a Balboa® control system used in Belize Spas brand.
Disclaimer: Although we hope this information will be useful, error codes are subject to change without notice. We make no representation as to the accuracy or completeness of this data and aren't responsible for errors or omissions. Refer to your owner's manual.
Error & LCD Window Message Codes:
ACC (Applied Computer Controls)
CoLd = Temperature in the spa heater housing is below 40° F. Status of the heater element is unknown. The low speed pump or circ pump will operate continuously until the temperature rises above 45° F.
OH = Over heat. The spa is at a temperature above 108° . Do not use spa when temperature is flashing or the OH message is displayed.
HLoH = Hi Limit Over Heat. Hi limit sensor is disconnected or shorted or the spa temperature is above 112° F.
SEoP = Sensor open or disconnected. Heater disabled but the spa is operational.
SESH = Sensor short, nonfunctional. Heater disabled but the spa is operational.
PSoC = Pressure switch open with circulating pump.
PSoL = Pressure switch open with low pump.
PSoH = Pressure switch open with high pump.
ToE = Time out error. Rare system error. Spa unusable. Contact ACC.
Balboa
(used by Belize Spas and many other hot tubs)
pd = Power supply, unit running on battery backup
OH = Sensors reading 112-118° F.
OHH = Overheat. Spa has shut down. One sensor has detected 118° F at heater.
OHS = Overheat. Spa has shut down. One sensor has detected 110°F.
Flo = Improper flow or pressure switch malfunction
Cool = Water temp 20° below set point
ICE = Potential freeze condition has been detected
Sn1 = Hi-limit sensor malfunction
Sn3 = Temp sensor malfunction
SnA = Spa is shut down. Sensor plugged into jack A is not working.
Snb = Spa is shut down. Sensor plugged into jack B is not working.
SnS = Sensors out of balance. If alternating with temp, may be temporary condition. If display shows only this message (blinking) spa is shut down.
HFL = Substantial difference between temperature sensors detected. Could indicate a flow problem.
LF = Persistent low flow problems. (Displays on the 5th occurrence of 'HFL' message with 24 hours). Heater is shut down, but other spa functions run normally.
dr = Inadequate water detected in heater.
dry = Inadequate water detected in heater. (Displays on third occurrence of 'dr' message). Spa is shut down.
Pr = When spa is first actuated, it will go into Priming Mode.
ILOC = Interlock failure - possible pump or ozone spike .
(---) =Unknown water temperature. (Displays when first powered up after refill).
Std = Spa operating in Standard Mode.
Ecn = Spa operating in Economy Mode.
SE = Spa operating in Standard-in-Economy Mode.
Brett Aqualine
OH = Temp exceeds 118° F
Fr = Freeze condition - temp below 40° F
FL = Pressure switch failure
EO = Shorted temp sensor
E1 = Open temp sensor
E2 = Shorted hi-limit sensor
E3 = Open hi-limit sensor
E4 = Shorted flow switch
E7 = Improper electrical connection
CTI
th1/39 = On startup indicates temperature probe problem.
th2/current temperature = On startup indicates temperature probe problem.
th3/39 = On startup indicates water temperature less than 39° F.
OH = Overheating, water over 112° F. System will restart when temp. drops.
hot = Overheating, water over 112° F. System will restart when temp. drops.
HL = High limit switch tripped.
Dream Maker Hot Tubs
OH = Overheat 108° F, spa is deactivated. Do not enter the water.
FL = Flow. Pressure switch is not working.
SN = Non functional high temperature sensor. Heater is deactivated.
F2 = 4 hours daily filtration
F4 = 8 hours daily filtration
F6 = 12 hours daily filtration
FC = continuous filtration
EasyPak
C = Celsius
CL = Current Time of Day
ECdu = Economy Mode Duration
Econ = Economy Mode Turn On
F = Fahrenheit
Fldu = Filter Cycle Duration
Flon = Filter Cycle Turn On
FLC = Pressure Switch Alarm
FLO = Pressure Switch Alarm
FrEE = Freeze Protection Alarm
HL = High Temperature Alarm
Loc = Panel / Keypad Locked
PrH = Temperature Sensors Alarm
Prr = Temperature Sensors Alarm
Tu = Temperature Set Celsius
Tu = Temperature Set Fahrenheit
Gecko
FLO = Pressure switch failure, switch open
FLC = Pressure switch failure, switch closed
Prr = Temp sensor failure
Prh = Hi-limit sensor failure
HL = Sensor measuring 119° F
FrE = Possible freeze condition detected
Hercules
OH = Spa temp exceeds acceptable limits
FLO = Flow problem
ICE = Freeze condition detected
SN1 = Hi-limit sensor failure
SN2 = Temp sensor failure
Hurricane
PS = Flow or pressure switch failure
SH = Shorted sensor
OP = Open Sensor
LO = Temp below 60° F - freeze
HL = Temp above 118° F
Hydro-Quip
C = Celsius
CL = Current Time of Day
ECdu = Economy Mode Duration
Econ = Economy Mode Turn On
F = Fahrenheit
Fldu = Filter Cycle Duration
Flon = Filter Cycle Turn On
FLC = Pressure Switch Alarm
FLO = Pressure Switch Alarm
FrEE = Freeze Protection Alarm
HL = High Temperature Alarm
Loc = Panel / Keypad Locked
PrH = Temperature Sensors Alarm
Prr = Temperature Sensors Alarm
Tu = Temperature Set Celsius
Tu = Temperature Set Fahrenheit
Jacuzzi Whirlpool
OH = Overheat Protection (Heater is deactivated, pumps low speed is activated).
COOL = Spa water is more than 20° F cooler than the temperature set point.
FLO* = Flow Switch (heater is deactivated. Pump may also be deactivated).
Hold = Panel sensors have been pressed too many times in a short period of time.
HOT = Circuit Board temperature has exceeded acceptable limit.
ICE = Freeze protection. No action is necessary.
I CE2 = Freeze protection. No action is necessary.
PnL = Communication between the panel and circuit board is faulty.
---- = 'Watchdog' (spa is deactivated) A problem has been detected.
Sn1 = Open sensor (heater is deactivated) or Shorted sensor (spa is deactivated).
Sn3 = Open or shorted sensor ( heater disabled).
FLO2 = Closed or shorted flow switch on system startup
Pinnacle
OH = Temperature has exceeded 110° F
SN = Sensor failure
FL = Flow/pressure switch stuck in closed position
Spa Builders
Sn1 = Nonfunctional high temperature sensor. Heater is deactivated.
Sn2 = Nonfunctional temperature sensor. Heater is deactivated.
FL1 = Water flow problem, inhibited or pressure switch malfunction. Check for proper spa water level and ensure pump is primed. Check for clogged filter.
FL2 = Pressure switch problem. Switch closed while pump is deactivated.
COL = Cool condition. If water temperature drops 20°F below set temperature, low speed pump and heater activates to bring temperature within 15° of set temperature.
ICE = Freeze condition. 55°F detected. Low speed pump and heater will activate until spa reaches 65°F.
OH = High temperature condition, has reached 110°F. Do not enter the spa. Low speed pump (and air blower if so equipped) will activate to assist in lowering temperature.
--- = 'Watchdog'. Water temperature has reached 118°F. Entire system is disabled. Contact qualified service technician.
Sundance Spas
ILOC = Interlock failure - possible pump or ozone spike
FLO = Pressure switch malfunction or Flow switch malfunction (system specific)
Hold = Panel buttons pressed to many times to quickly
HOT = PCB temperature above acceptable limit - air blower on
ICE = Potential freeze condition
Pnl = Communication between PCB and panel interrupted
Sn1 = Hi-limit sensor failure
Sn3 = Temp sensor failure
---- = 'Watchdog' (spa is deactivated) A problem has been detected
Vita Spas
HiLi = Water temp over acceptable limit
BJ2P = Pump/Blower purge - normal condition
FP = Freeze protect-temp under acceptable condition
SS=0; SS=S; LS=O; LS=S = Multiple causes; open sensors, bad connection to panel, improper voltage, etc.
James Hirsch
Buffalo, NY