Do It Yourself

Air Conditioner is not coming on

• First check they system switch and make sure it is set to cool.
• Then look at the thermostat and make sure it is set below the current temperature of your home.
• Is the outdoor unit power supply switched on?
• Is the furnace power supply on?  The furnace provides low voltage power for thermostat operation.
• Check the fuse box for a blown fuse or tripped circuit breaker.

If this has not fixed the problem, does your system have a high-pressure switch?  If it does follow these instructions.

1. Shut off power to the unit.
2. Remove access panel to compressor compartment (or control box cover on HS18 units).
3. The high-pressure switch will normally be located on the outdoor coil piping (check owner's manual for exact location).  Push button on switch to reset.  Do not push reset button more than twice.
4. Replace access panel and restore power to unit.

If the system is still not working, please call Air Control.

Furnace is not coming on

1. First check they system switch and make sure it is set to heat.
2. Then look at the thermostat and make sure it is set above the current temperature of your home.
3. On electric ignition units, turn the thermostat off, then back on to reset the ignition control.
   
4. Is the unit power supply switch on? The power supply switch is often mounted on or near the unit.
5. Check the house fuse box for a blown fuse or tripped circuit breaker.
6. Check the blower access panel. It must be firmly in place for the unit to operate.
7. Check the air filter. An extremely dirty air filter can cause furnace safety controls to shut down the system.
8. Check to be sure that the manual shut-off valve in the gas supply pipe leading to your furnace is in the open position. The valve is open if the lever points in the same direction the pipe runs, and it is closed if the lever is at a right angle to the pipe. If the valve is closed, (check and make sure gas is not turned off for safety reasons before proceeding)open it then follow the start-up procedures.