Honeywell MAGIC STAT CT3100 - Manual (Page 12)

Troubleshooting, œntinued
PROBLEM CHECK ACTION
Display goes
blank for several
minutes during long
furnace burn cycle,
then recovers.
—air filter and fan belt. Replace if necessary.
—possible power interruptions
during part of furnace cycle.
May require isolating relay to
eliminate power interruptions. See
Table 1 in installation manual form
number 69-8024.
No heat. —pilot flame. May be out. Relight pilot flame per furnace
manufacturer's instructions.
—fuse or circuit breaker. If fuse is blown or breaker tripped,
replace or reset.
No cooling.
Note: The CT3100 —system switch. May be in OFF
or HEAT position.
Move switch to COOL position.
is not designed
for cooling-only
—fuse or circuit breaker. If fuse is blown or breaker tripped,
replace or reset.
systems. —condenser switch position.
Located outdoors and may be
turned OFF.
Move to ON position.
20
continued
Troubleshooting, continued
PROBLEM CHECK ACTION
No cooling,
(continued)
—thermostat connections. Turn OFF power to cooling system
and furnace. Check for correct
terminal hookups. Repair any
frayed or broken wires. Firmly
tighten all terminal screws.
—other. Contact a qualified service tech­
nician for assistance.
Time button
advances to next
program point
instead of by
15-minute
increments.
—number of temperature settings
programmed; thermostat will
take up to six.
Erase one setting before adding
another.
continued
21
69-8023—2