SPTSTAT
SmartPool
Thermostat input fault.
Display shows SPTSTAT or TSTAT; heater ignores thermostat setting.
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Possible Causes
Failed internal thermostat on SmartPool control, shorted external thermostat wires, incorrect mode (pool/spa) configuration.
How to Fix / Troubleshooting
Overview: Thermostat faults affect temperature control but not basic safety circuits.
- Mode check: Confirm the heater is in the correct mode (pool or spa) and that the active setpoint is above the current water temperature.
- External t-stat: If using an external thermostat or automation, temporarily disconnect its wires at the heater and test using the internal control only.
- Control reset: Power cycle the heater and re-enter desired setpoints.
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Repair Difficulty
Easy
2/5
Required Part
SmartPool User Interface Board.
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