GE RAK164D1 User Manual

Troubleshooting tips.

No display

Check for 24 VAC at thermostat;
display is blank when 24 VAC is
not present.

System fan does not

Verify that wiring is correct.

come on properly

Thermostat turns on and

Adjust temperature differential

off too frequently

(see Temperature Differential,
Stage 1).

Fan runs continuously

Check Fan Auto/On switch. If set to
ON position, fan will run continuously.

Room temperature is

Verify that wall hole is plugged

not correct

with putty or insulation; calibrate
thermostat (see Configuration mode).

Auxiliary heat not on

Adjust differential for 2nd stage

soon enough

(RAK148D1 only) heating, if required
(see Configuration mode).

Compressor doesn’t run

There is a 3 minute time delay and

or turn off immediately

a 3 minute minimum run time for

when changing function

the compressor when it turns on/off.

or setting

Fan doesn’t run or turn off

This is normal. On some models, the

immediately when changing fan may have a 3 minute minimum
function or setting

run time/off time delay.

Problem not listed above

Press the Reset button once;
display will be refreshed.

Problem

Solution

Operating functions.

Heat
• In this mode, the thermostat

controls the heating system.

• Press the

buttons to set

the desired temperature.

Standby

Set