Before Calling For Service…

1. Check to see that electrical disconnect switches are ON.
2. Make sure the room thermostat temperature selector is properly set.
3. The room thermostat system switch should be in the ON position.
4. Replace any blown fuses, or reset circuit breakers.
5. Make sure unit access panels are in place.
6. Air filter should be clean.
7. Write down the unit model number before calling.