Pool heater repair. I found the pool heater does work and shuts off. The heater is reading a false temperature of the inlet pool water that is hotter than the actual temperature, which is causing the heater to falsely reach the temperature and shut off. The first step is installing a new temperature sensor on the pool heater, then going from there. Pics of the model and serial number are in the file. We need to give an estimate to the customer to install a new sensor, and if approved, we need to order the new temperature sensor.