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TROUBLE SHOOTING GUIDE
Tools Essential for Trouble Shooting
1. Furnace Installation and Operation manual
2. Circuit Tester / Volt Meter
3. Molex pin Extractor
4. Volt Meter
ATTENTION: Before attempting any trouble shooting:
1. Check your outlet (for 070) or your wiring to breaker box (130 & 150) to insure
proper polarity and grounding.
2. Check flue for any blockage.
3. Take time to clean burn pot and heat exchangers.
4. If you have replaced the fan limit control, make sure the brass connector in the
middle has been removed or snipped
.
STEP #1
CIRCULATING BLOWER CHECK
NOTE: The factory setting for the blower is to come on at 150°F and off at 100°.
Find the blower limit control; it is a silver part with the Honeywell trade line label. It will
have a white button. Pull the switch to the on position.
Should the blower fail to come one the first step is to check the power source. If the power
source is OK you will need to make sure that all wire leads are properly connected. If the
blower still fails to run, replacement will be necessary.
STEP #2
CONFIRM POWER TO CONTROL BOARD
Turn Main power switch from the “Stove Off” position to the “Draft Fan” position. If the red
indicator light comes on, there is power to the control board. If the light does not come on
check the following:
A. Power Source (See Step #1)
B. Fuse
C. Burner Manual Reset – If the fuse is not blown and the reset button has not popped out,
inspect the molex connection. Finally, using a voltmeter, check for power at the power
switch. If the meter indicates 100v and the light still doesn’t come on, replace the
control board.
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