41652_model44760_web.pmd

50

TROUBLESHOOTING

 

50

Problem

Solution

SCRAMBLED OR DOUBLE DISPLAY

1.

Remove clear Mylar sticker

(numbers over numbers)

 

 

NO DISPLAY

1.

Check terminal connection. A common (C) wire is required for operation.

2.Check battery connections and batteries.

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

ENTIRE DISPLAY DIMS

1.

Replace Batteries

 

2.

Adjust LCD contrast in the Option Menu.

PROGRAM DOES NOT CHANGE AT YOUR DESIRED SETTING

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

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

3.Check for the correct day setting.

4.Check any remote sensor readings or weights.

AUTO / FAN DOES NOT TURN ON

1.

Move HG/HE selector to opposite position

 

 

 

FAN RUNS CONTINUOUSLY

1.

Check fan setting. It may be “ON” or in Programmable Fan mode “PGMON”.

 

 

 

51

Problem (cont.)

Solution (cont.)

51

HEATING OR COOLING DOES

1. Check that the system selector key is in the correct position (“HEAT,” “COOL”

NOT GO ON OR OFF

 

or “AUTO”).

 

 

2.

The thermostat may be in the AUTO mode. Look for “AUTO” on the LCD display.

 

 

If the Heat and Cool program temperatures are close, then the thermostat re-

 

 

quires a larger room temperature change before changing from Heat or Cool.

 

3.

There may be as much as a 4 minute delay before the Heat or Cool system turns

 

 

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

 

 

4.

Check your circuit breakers and switches to ensure there is power to the system.

 

5.

Replace batteries.

 

 

6.

Make sure your furnace blower door is closed properly.

 

 

7.

Check the position of the Heat Pump or Multi-Stage selector switch.

 

 

 

 

ERRATIC DISPLAY

1. Press the RESET button once with a small pin and hold for two seconds.

 

 

 

The thermostat will need to be re-programmed.

 

 

 

 

IF UNIT CONTINUES TO OPERATE

1. Replace unit.

 

IN THE OFF POSITION

 

 

 

 

 

 

THERMOSTAT PERMANENTLY

1. Replace unit.

 

READS “HI,” “LO,” OR “Error”

 

 

 

AFTER PRESSING RESET BUTTON

 

 

 

 

 

 

 

If you experience any other problems, call 888-830-1326 from 8 AM to 5 PM Central Time for technical assistance.