Jandy Pool Heater Error Code 10: How to Fix It

Q: Can I reset Jandy error code 10 by turning the heater off and on?

Simply cycling power may temporarily clear the code, but the underlying issue (overheating) will cause it to return. You must address the root cause, such as low water flow or a faulty switch.

Q: What causes a Jandy pool heater to overheat?

Common causes include low water flow from a dirty filter, clogged pump basket, closed valves, undersized plumbing, or a faulty bypass valve. Also, a malfunctioning high limit switch can cause false trips.

Q: How do I test a Jandy pool heater high limit switch?

Use a multimeter set to continuity. Disconnect the switch wires and touch the probes to the terminals. If it beeps (continuity), the switch is closed and likely fine. If no beep, the switch is open (tripped) and needs resetting or replacement.

Q: Is error code 10 the same as code 10 on other Jandy products?

Yes, for Jandy pool heaters, error code 10 universally indicates a high limit trip. However, always refer to your specific model's manual for exact interpretations.

Q: Can I still use my pool if the heater shows error code 10?

You can use the pool without heating, but the heater will not operate until the error is resolved. Do not attempt to bypass the safety switch, as this can cause damage or fire.

Abstract

Error code 10 on a Jandy pool heater indicates that the high limit switch has tripped due to overheating. This safety feature shuts down the heater to prevent damage. The fix typically involves checking water flow, cleaning filters, and resetting the switch.