STEP 1 Determine Supply Voltage Heater must be connected to a GFCI protected branch circuit. Before installing the heater, it is extremely important you verify the heater is configured for the correct supply voltage. The Com-Pak Bathroom Heater is configured for 240-Volt operation by default. For 120-Volt installation you must reconfigure the heater wiring. Installing the heater without configuring for the correct voltage will destroy the heater and void your warranty. How to determine the suppl

5.Defective thermostat and/or timer. 1. Dust, lint or other matter has accumulated inside heater. 2. Airflow is blocked. 3. Fan or motor is jammed. 4. None of the above. 1. Verify that supply voltage matches the heater rating. 2. The total amperage of all heaters on a branch circuit must not be more than 80% of the amperage rating of the circuit breaker and supply wire ratings. Use a lower wattage heater, or reduce the number of heaters on the circuit. 3. Shorted supply or heater wires may be ac