SmartPool Uncommanded firing

Heater turns on even when there is no call for heat from pool controls

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Shorted thermostat wires, Stuck relay on SmartPool control board, Misconfigured remote/automation mode

DANGER: Uncommanded firing can overheat the pool or spa.

Switch to standby: Set the SmartPool heater to OFF or STANDBY mode on the front panel.
Check external wiring: Disconnect any external thermostat or automation wires at the heater. If the problem stops, the issue is in the external control.
Observe behavior: If the heater still tries to fire with all external controls disconnected, the internal control board relay may be stuck and should be replaced.

Hard 4/5

SmartPool Main Control Board

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