Instructions / Assembly

34
Symptom Possible Cause Corrective Action
Heat, Cool or Fan Runs Constantly. 1. Possible short in wiring.
2. Possible short in thermostat.
3. Possible short in heat/cool/fan
system.
4. FAN Switch set to Fan ON.
Check each wire connection to verify
they are not shorted or touching
together. No bare wire should stick
out from under terminal screws. Try
resetting the thermostat as described
above. If the condition persists the
manufacturer of your system or service
person can instruct you on how to
test the Heat/Cool system for correct
operation. If the system operates
correctly, replace the thermostat.
Furnace Cycles Too Fast or Too Slow
(narrow or wide temperature swing)
1. The location of the thermostat and/
or the size of the Heating System
may be influencing the cycle rate..
Digital thermostats normally provide
precise temperature control and
may cycle faster than some older
mechanical models. A faster cycle rate
means the unit turns on and off more
frequently but runs for a shorter time
so there is no increase in energy use.
If you would like to increase the cycle
time, clip Jumper W-905 as mentioned
in the instructions for Hydronic Heating
Systems. It is not possible to shorten the
cycle time. If an acceptable cycle rate is
not achieved as received or by clipping
W-905 contact a local service person for
additional suggestions.