Instructions / Assembly

32
Symptom Possible Cause Corrective Action
Heat, Cool or Fan Runs Constantly. 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.
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. If the condition
persists the manufacturer of your sys-
tem 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.
No Heat 1. Pilot light not lit.
2. SYSTEM Switch not set to HEAT.
3. Loose connection to thermostat or
system.
4. Furnace Lock-Out Condition. Heat
may also be intermittent.
Re-light pilot.
Set SYSTEM Switch to HEAT and
raise setpoint temperature above room
temperature. Verify thermostat and
system wires are securely attached.
Many furnaces have safety devices that
shutdown when a lock-out condition
occurs. If the heat works intermittently
contact the furnace manufacturer or
local service person for assistance.