Jandy JXi 260 260,000 BTU Pool Heater with High Efficiency and Digital Temperature Control TP Error Fix: Thermostat Problem — Sensor Out of Range

Error code TP on the Jandy JXi 260 260,000 BTU Pool Heater with High Efficiency and Digital Temperature Control means: Thermostat Problem — Sensor Out of Range. The temperature sensor is connected but reading an out-of-range or implausible value — different from TO (open circuit); the sensor may be failing, the wire may have a partial break or high-resistance connection, or the connector may be corroded from moisture exposure; check sensor wire and connector for signs of corrosion or damage; test thermistor resistance; if the resistance does not correspond to the expected value for the current water temperature, replace the sensor

The most successful fix is "Test and Replace Thermostat Sensor Thermistor" (medium difficulty, ~45 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Test and Replace Thermostat Sensor Thermistor") is rated medium difficulty and takes about 45 minutes. Tools needed: Multimeter, T20 Torx screwdriver, Needle-nose pliers.

DIY cost: $15-$25. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

The Jandy JXi 260 260,000 BTU Pool Heater with High Efficiency and Digital Temperature Control has 8 other known error codes, including: AFS (Air Flow Switch Fault), AGS (Air/Gas Switch Fault), CE (Communication Error), CF (Combustion Fan Fault), FE (Flue Exhaust Fault), and 3 more.

Error code TP also appears on 1 other Jandy model: JXi 400,000 BTU Pool and Spa Heater with Digital Temperature Control. The fix may vary by model, so check each model's specific page for tailored repair steps.