User Guide

14 69-0563—2
Troubleshooting
Your Honeywell thermostat requires little or no attention. Most problems can generally be
traced to the following:
(continued)
1
Problem Check Action
No heat. — system switch. May be in OFF
or COOL position.
Move system switch to HEAT position.
— fuse or circuit breaker. If blown or tripped, replace fuse or reset
breaker.
— furnace power switch. May be
Off.
Move switch to ON.
— pilot flame. May be out. Relight pilot flame per furnace manufacturers
instructions.
—R and W thermostat
connections.
Turn Off power to furnace. Check for correct
terminal hookups. Repair any frayed or broken
wires. Firmly tighten all terminal screws. Turn
On power.