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Archive for the ‘Error Codes’ Category

Spa & Hot Tub Error Codes – OH, OHH, OHS

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balboa hot tub control OHH errorIn our series on spa and hot tub error codes, today we turn our attention to the HOT messages that your topside control may be trying to give you.

OH, OHH or OHS (overheat) all mean that a temperature sensor has detected unsafe water temperatures of 108° – 118° F, and your spa is in an emergency cool down mode. The heater is shut off, and the circulation pumps and blower are turned on to help dissipate heat.

Open the spa cover to allow excess heat and steam to escape. The spa obviously should not be used when OH or OHH is flashing on the topside control; as the water could be scalding hot for several more minutes. After the water cools, the high limit switch may be need to be reset on some spa packs; look for a red reset button. Press any topside button to reset a digital spa after the water has cooled to 100° F.

What Causes a Spa to Overheat?

Low water flow (LF, FLO), is the usual cause of an overheating (OH, OHH) spa or hot tub. When water doesn’t flow fast enough through the heater, the heater stays hotter, and the temperature of the water increases. Eventually, the temp sensors or high limit switches will detect the increased water temperature and shut everything down. Some causes of low water flow in a spa include:

  • A dirty spa filter cartridge.
  • Closed or partially closed valves or jets.
  • The pump has an air lock, or has lost prime.
  • Low water level in spa, and skimmer is sucking air.
  • The spa drain cover is obstructed or a pipe is blocked.

What Else Causes a Spa to Overheat?

If your water flow is perfectly fine, then you could have a problem with the thermostat or high limit switches used on older spa packs. These can sometimes fall out of calibration or become too sensitive. Digital spas have electronic sensor circuits, which are more durable than mechanical switches. However, temperature sensors, high limit sensors, relays and circuit boards will still eventually fail on modern spas.

In most cases, for newer spas anyway, the water flow problem can be quickly remedied and the spa will cool, reset and start again on its own. Some panels need a prompt from you to restart. For spas without digital controls, you may need to manually reset the high limit switch near the heater housing.

Spa Overheating Troubleshooting Flow Chart

Here’s a Cal Spa troubleshooting flow chart that has some other possible triggers of seeing OH, OHS, OHH or HH blinking on your spa panel. Open the spa cover and let the spa cool down for 10 minutes, then touch the control panel to reset the circuits, or push a red reset button on air systems.

cal spa OH OHH OHS HH error code troubleshooting chart

For OH, HH or HOT trouble codes, an overheating hot tub is not usually a heater problem. It is almost always a flow problem. When it’s not a flow problem, it’s usually a bad temp sensor, high limit switch or a stuck relay.

Here’s another Cal Spa troubleshooting flowchart for spa error codes OH, including testing the spa heater element for excessive resistance. This type of testing should only be done with the spa heater and all systems powered OFF, and only performed by someone who is qualified to test safely.

cal spas OH spa heater code troubleshooting flow chart

So, the next time your spa throws you a OH, OHH or some other “overheat” error code, you know what to do. Clean or replace the spa filter, open all the jets and turn the pump on high. If you still have problems, check over your temp sensor and high limit circuits for wire, plug or sensor problems.

Spa Error Codes – The Big List

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spa-and-hot-tub-error-codesThe best thing about digital spas and hot tubs – those with a spa side control panel – is that you are given error codes for most equipment problems. Spa error codes can be somewhat cryptic, but when you have the BIG LIST of CODES, you can immediately define the two or three digit source of trouble.

Problem is – there’s not much consistency among the error codes used by spa pack manufacturers. Each one uses its own conventions for naming the various system faults.

Hence the need for the BIG LIST of CODES. The alphabetical list of hot tub error codes below covers all major manufacturers of spa controls, including ACC, Balboa, Brett Aqualine, CTI, Dream Maker, EasyPak, Gecko, Hurricane, Jacuzzi, Len Gordon, Maax, Pinnacle, Spa Builders Group, Spa Quip, Sundance and Vita Spas.

Is it an Error Code, or a System Status Code?

Not all spa codes are errors, to inform you of trouble, but many codes are used to provide information about system mode, status or equipment operation. Some system status codes are identified below as well, with the phrase “system message, not an error”.

 

the big list of spa and hot tub error codes


CODE


ERROR CODE DESCRIPTION

* * *  Flow/Pressure switch either Open or Closed
* * * High Limit switch is faulty
– – – , – – – Water dangerously hot, electronic fault, system shut down
-1 Hi-Limit fault
-2 Temp sensor fault
-3 Flow/Pressure switch open
-4 Flow/Pressure switch closed
-7 Hi-Limit fault
Hi-Limit or Temp Sensor fault, water may be dangerously hot
Temp Sensor Calibration, after system shutdown/startup, not an error
1 Stuck Button on Keypad
2 No Controller Data being received
3 Temperature Sensor fault
4 Water Sensor/Pressure switch fault
5 Temp Sensor, or water is dangerously hot
6 High Limit manual reset on heater is tripped
7 Stuck Heater Relay
9 Water Pressure fault, pump may be airlocked, or water level low
131 Hi-Limit fault, water may be dangerously hot
A1/A2-ER Auxiliary system error; blower, lights, music
AOH Auxiliary system overheating; Equipment is running hot, or needs air
BJ2P Hi-Limit fault – water may be dangerously hot
BL-ER Blower error, faulty motor or closed valve
C4.4 Hi-Limit fault
C Celsius, used to indicate panel is in Celsius mode
Cd, CLd Cold – Freeze Condition detected
CE 01 Stuck Touchpad button
CE 02 No controller Data Communication
CE 03 Temperature Sensor fault
CE 04 Water Sensor/Pressure switch fault
CE 05 Temp Sensor, or water is dangerously hot
CE 06 High Limit manual reset on heater is tripped
CE 07 Stuck Heater Relay
CE 08 Temp Sensor Fault
CE 09 Water Pressure fault, pump may be airlocked, or water level low
CL Current Time of Day; system message, not an error
COL Cool – water is 20° below set point; system message, not an error
CoLd Cold – water is 40° or less; system should self-start pump / heater
Cool Cool – water is 20° below set point; system message, not an error
CP-ER Circulation pump error
dr, dy, dry Dry – low water volume detected in heater
E0 Short circuit temperature sensor
E1 Open circuit temperature sensor
E2 Short circuit Hi-Limit sensor
E3 Open circuit high Limit sensor
E4 Short circuit/closed pressure/flow switch
Ecdu, Ecn, Econ Spa is in Economy Mode; system message, not an error
EO Short circuit temperature sensor
Er0, Er1 Temperature sensor fault
Er2, Er3 Hi-Limit fault
Er4 Short circuit/closed pressure/flow switch
err 1 Water Pressure fault, pump may be airlocked, or water level low
err 3 Stuck Button on Keypad
err 4 Water Sensor/Pressure switch fault
err 5 Temp Sensor, or water is dangerously hot
err 6 High Limit manual reset on heater is tripped
err 7 Stuck Heater Relay
err 8 Temp Sensor Fault
Err Software Program Fault
Error 3 Stuck Button on Keypad
Error 4 Water Sensor/Pressure switch fault
Error 5 Temp Sensor, or water is dangerously hot
Error 6 High Limit manual reset on heater is tripped
Error 7 Stuck Heater Relay
Error 8 Temp Sensor Fault
F2 4 hours daily filtration; system message, not an error
F4 8 hours daily filtration; system message, not an error
F6 12 hours daily filtration; system message, not an error
F Fahrenheit, used to indicate panel is in Fahrenheit mode
FB-ER Fiber Optic error; accent lighting
FC Filter Continuous mode; system message, not an error
FL1 Water Pressure fault, dirty filter, airlocked pump, low water level
FL2 Pressure switch fault; switch closed while pump is off
FL Water Sensor/Pressure switch fault; water flow problem
FLC Pressure switch fault; switch closed while pump is off
Fldu Spa is in Filter mode; ; system message, not an error
FLO, Flo, FL1 Flow – inadequate water volume sensed by Flow / Pressure switch
FLO2 Flow – short circuit/closed circuit; pressure/flow switch
FLO (flashing) Flow – short circuit/open circuit; pressure/flow switch
Flon Spa is in Filter mode; ; system message, not an error
FN-ER Fan error; cooling fan fault
FP, Fr, FrE Freeze – water is 40° or less; system should self-start pump / heater
H2O Water Pressure fault, pump may be airlocked, or water level low
HFL Sensors out of balance, reporting different results
HiLi, HLEr Water temperature above acceptable range
HL, HH, OHH High limit sensor reading 118°, or above – check flow
Hold Panel buttons pressed to many times or too quickly
HOT Overheating, water over 112° F. Cool down procedure begins.
IC, ICE, ICE2 Freeze Condition detected; Warm up procedure begins.
ILOC Interlock failure; check magnetic contacts on spa equipment door
L1, L2 Panel Lock; enter code to unlock control panel
LF Persistent low flow problems.
LO Freeze Condition detected; Warm up procedure begins.
LOC Panel Lock; enter code to unlock control panel
O3-Er Ozone error; check for operation and output
OH High temperature condition, over 110ºF. Spa may be partially deactivated or low speed pump (and air blower if equipped) may activate to lower temp
OHH Overheat. One sensor has detected 118º. Spa has shut down
OHS Overheat. One sensor has detected 110º. Spa has shut down
OP Open circuit sensor
P1, P2 or P3-ER Pump 1,2 or 3 error or failure
pd Power supply interrupted, unit running on battery backup
PnL Panel error; communication error between panel and circuit board
Pr Priming – pump is starting; system message, not an error
Prh Hi-limit sensor failure
Prr Temperature Sensors Alarm
PS Water Sensor/Pressure switch fault
PSoC Pressure switch open on circulation
PSoH Pressure switch open on high speed
PSoL Pressure switch open on low speed
RH-HR Heater Repair error
RH-NC No Communication error; Panel to Board
RH-NF No Flow in heater
RH-NH No Heat, heater fault or failure
SA, SnA, SnH, Sb, Snb, Snt Sensor Open Circuit or faulty
SE Spa in Economy Mode; system message, not an error
SEoP Sensor open or disconnected. Heater disabled but spa operational
SESH Sensor short, nonfunctional. Heater disabled but spa operational
SH Short circuit on temperature sensor
Sn1 Hi-Limit fault, water may be dangerously hot
Sn2 Temperature sensor fault, Heater deactivated
Sn3 Temperature sensor fault, Heater deactivated
SN Temperature sensor fault, Heater deactivated
Sn Sensors out of balance, reporting different results
Sna Sensor plugged into jack A is not working. Spa is shut down.
Snb Sensor plugged into jack B is not working. Spa is shut down.
SnH Hi Limit circuit open or faulty
SnS Sensors out of balance, reporting different results
SnT Temperature sensor fault, circuit open or faulty
SP-F1,F2 or F3 Fuse 1,2 or blown
SP-HR Hardware error
SP-IN Input voltage low
SP-OH Overheat – water temp over 112°
SP-OT Overtemp – air temp around equipment is too hot, lack of air flow
Std Spa in Standard Mode; system message, not an error

Do you have a spa or hot tub error code that is not on the list?  Make a call to our tech team who can look up the code for you, and decipher its meaning and let you know if it is indeed an error code, or a system status message.

800.770.0292 

Happy Hot Tubbin’

Daniel Lara
Hot Tub Works

 

Spa Error Codes – Sn, SnS, Sn1, Sn2…

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balboa-error-code-Sn-Sn1-Sn2-Sn3-SnS---Continuing in my little series on spa and hot tub error codes or trouble codes, today we take a look at Sensor Errors.

These will present themselves in many forms on the display, such as Sn, Sn1, Sn2, and they refer to temperature sensors located on the heater manifold. The controller display is telling you that either the high limit or the temp sensor are open or shorted. There also could be a voltage problem, excessive voltage creates heat. Or, it could be a problem with the thermostat allowing the heater element overheat.

Like our previous discussions on spa error codes, FLO and OH, the sensor codes Sn, Sn1, Sn2… are very much water flow dependent. If water is not flowing through the heater chamber fast enough, it gets too hot, and the safety high temp sensors go into action – just doing their job.

Spa Error Codes: Sn, Sn1, HL, E2, E3, Prh

For these trouble codes, the high limit sensor is open or shorted. It could be a loose plug connection or bad wire, or it could be a problem related to water flow. Clean or replace your spa filter cartridge as a first step. Make sure that all jets are open, and nothing is blocking the spa drain cover flow. Underneath the spa, check that all valves are open (handles up). If the flow rate still seems less than normal with all jets and valves open, you may consider inspecting for broken valves (closed when they appear to be open), clogged impeller inside the pump wet end, or something stuck in the skimmer pipe. Of course, be sure that you don’t have a pump air lock, and that the spa water level is filled high enough.

Spa Error Codes: Sn, Sn2, Sn3, EO, E1, Prr

With these spa sensor codes, the Temperature Sensor is open or shorted. The temp sensor and the high limit are usually located on the heater housing, with 1-2 small wires coming off and connecting to your controller. With the system powered off, you normally unscrew the sensors from the heater manifold, and unplug the wire from the panel. Inspect the wires for any heat or rodent damage, and the sensor face for corrosion or scaling. However, the usual cause for spa temp sensor error codes is that the water flow is insufficient, and when water moves too slowly through the heater, it doesn’t remove the heat fast enough, which triggers all sorts of error codes for flow rate and overheating. HOT, OL, HL, FLO, Sn…

SPA TEMPERATURE SENSOR ERROR CODE FLOW CHART

Here’s a Cal Spa troubleshooting chart for when your spa topside display shows a sensor error code Sn, Sn1, Sn2, Sn3… As you can see, it could be a nuisance tripping, or the wires could be absorbing excess heat, need calibration, or simply be faulty.

cal-spas-Sn-error-code-flow-chart

In addition to the Sn, Sn1, Sn2 type of error codes, other codes for Smart Sensor spas, such as SA, Sb, SnA, SnB error codes are used on many spas and hot tubs. These are similar to the Sn1 and Sn2 codes, signaled from the high limit or water temperature sensors.

cal-spa-smart-sensor-troubleshooting-flowchart

In summation; when you have spa trouble codes of Sn, SnA, Sn1, Sn2. Sn3, HL, EO, E2, E3, Prh, Prr – these all refer to the heat sensors that are usually attached to your heater manifold. Inspect the wire and plugs, check the spa water level and make sure water is flowing free and fast. If you confirm all those things, and it still throws an Sn error at you, test the sensor as described above; it may be faulty.

 

Happy Hot Tubbin’

Daniel Lara
Hot Tub Works

 

Spa & Hot Tub Error Codes – FL, FLO, FLOW, LF

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balboa-LF-low-flow-error-codeEvery digital spa control is designed with some diagnostics, to self-diagnose problems with pumping and heating your spa or hot tub. Topside controls also give lots of information about your spa status, which are not to be confused with spa error codes.

There are 3 groups of error codes; Flow codes, relating to water flow, Heater codes, and Sensor codes. Let’s start at the top, today’s post is about water flow trouble codes on your spa panel. These are usually presented as FL, FLO or FLOW on your display, although it may be LF, for Low Flow, or PS for Pressure Switch.

LF, or Low Flow error codes on a spa or hot tub is really a self-preservation exercise for your hot tub. When water isn’t flowing fast enough through the heater, the FLO error code shuts things down, to avoid a total meltdown (well, not really a melt-down, but you know).

Flow problems are the number one source of trouble for the spa or hot tub owner. When the water isn’t flowing like it should, the heater stops working, equipment overheats and water quality quickly suffers.

So – FLOW. very important. Here’s what to do if your spa throws a FL, FLO or FLOW error code at you.spa-error-codes-FLO

For Low Flow spa error codes, check the filter, check the pump and check the valves to find something that is obstructing the water flow. Could be a dirty filter, a clogged impeller, closed valve, or a piece of plastic film covering the spa drain. Could also be low water level. Sometimes, it’s actually a bad pressure switch or flow switch, or loose connections or damaged wires or wire connectors.

Proceed step by step, and you should be able to find the cause of the FL, FLO or FLOW error code. If you need assistance with spa trouble codes, you can call us anytime at 800-770-0292 

 

Happy Hot Tubbin’

Daniel Lara
Hot Tub Works