TROUBLESHOOTING

 

38

 

 

 

 

 

 

 

 

 

 

 

 

Problem

Solution

 

 

 

 

 

 

 

Scrambled or Double Display

1.

Remove clear mylar sticker.

 

 

 

 

 

 

(numbers over numbers)

 

 

 

 

 

 

 

 

 

 

 

No Display

1.

Check battery connections and batteries.

 

 

2. Press RESET button with a small pin and hold in for two seconds.

 

 

 

 

 

 

 

Entire Display Dims

1.

Replace Batteries.

 

 

 

 

 

 

 

Program Does Not Change at

1.

Check that the time is set properly to “AM” or “PM”.

 

your Desired Setting

2.

Check that the thermostat is not in “HOLD” or “Home Today” modes.

 

 

3.

Check for the correct day setting.

 

 

 

 

 

 

 

Auto / Fan Does Not turn On

1.

Move HG/HE selector to opposite position

 

 

 

 

 

 

 

Heating or Cooling Does Not

1.

Check that the system selector switch is in the correct position

 

Go On or Off

 

(“HEAT,” “COOL”).

 

 

2. There may be as much as a 4 minute delay before the Heat or Cool

 

 

 

system turns On - wait and check. (Compressor protection delay.)

 

 

3.

Check your circuit breakers and switches to ensure there is power to

 

 

 

the system.

 

 

4.

Replace batteries.

 

 

5.

Make sure your furnace blower door is closed properly.

 

 

6.

If your system only uses 4-wires, be sure the jumper wire is installed

 

 

 

between the RC and RH terminals.

 

 

7.

Check the position of the Furnace or Heat Pump selector switch: STD - HP.