Upon arrival, I identified that the boiler control was not sending voltage to the thermostat, preventing it from functioning correctly. I began by inspecting the POF boiler control unit, checking for any visible signs of damage or loose connections. After ensuring the wiring was intact, I moved on to the 1-hour thermostat. I tested the voltage at the control unit and confirmed it was not reaching the thermostat. I then replaced the faulty thermostat and rechecked the voltage, ensuring the system was now operating as intended. The boiler control is now sending the correct voltage to the thermostat, restoring full functionality.
