Troubleshooting - White Rodgers 90 SERIES 1F95-391 Operating Instructions Manual

TROUBLESHOOTING

RESETTING THERMOSTAT
The thermostat can be reset back to factory default programs and configuration options. Removing power from the thermostat will
not reset it to the default settings. Before resetting the thermostat you may want to make note of the previously selected configura-
tion options and programming.
To reset the thermostat, press and release PROGRAM
same time. This will reset the thermostat to factory default programs and configuration. The display will momentarily go
blank, and then all segments on the display will momentarily be shown. The thermostat will then go into the AUTO HOLD
mode and will maintain a factory preset temperatures of 62
TURE overide press the PROGRAM
SYMPTOM
No Heat/No Cool/No Fan
(common problems)
, then press the
RUN
°
F in Heat or 85
button.
RUN
POSSIBLE CAUSE
1. Blown fuse or tripped circuit
breaker.
2. Furnace power switch to OFF.
3. Furnace blower compartment
door or panel loose or not properly
installed.
33
, TIME and
FAN BACK
°F in Cool
. To clear the HOLD TEMPERA-
CORRECTIVE ACTION
Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage
safety interlock or door switch.
Troubleshooting
buttons at the
Index