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Troubleshooting Guide (cont'd)
ELECTRICAL SYSTEM CHECK
(Use diagram on page 33)
A CAUTION J
Label all wiring before disconnecting any wiring; to ensure I
correct reconnection. Failure to follow this instruction J
could cause improper and possible dangerous operation,
resulting in DEATH, SERIOUS BODILY INJURY, OR
PROPERTY DAMAGE.
No
i
i
i
i
i
Correct by wiring according
granl.
to dia-
t Visually check that all components ]
are wired correctly according to|
wiring diagram on unit.
Yes
!
.................... Pilot is lit and thermostat is calling
for heat.
I
Yes
Go to Thermostat and Gas Supply
Check sect on. - .... No ........
r-.
Supply 110/120 volts.
eel. .... No ....... ,.I
r-
I
1
[ Turn on. ? ..... No ....... _'
Check at #1 for 110/120 volts to
ground.
I
I
No
i
I °p,a°°swit h- I
I
,,,,,e-..... No .......a
Replacegas pressure switch.
NOTE: Requires minimum 31/2" [.
W.C. for natural gas or 8" W_C.for J"_"..... No ....... a
propane (L.P.)gas to operate. 1
Does power cord or power wiring
have 110/120 volts available (recep-
tacle and/or junction box)?
I
Yes
Is on/offswitch "ON"?
I
Yes
I
motor is running. I
Blower
I
Check wiring between # 2 and #3. _ ......
Yes I_ Check at #2 for 110/120 volts to
r ....... ground.
I
Yes
!
i ]] Unplug blower motor and check at
*'--- #3 for 110/120 volts to ground.
, i
' Yes
No ........... J Replace blower motor. ]
34
Yes
continued onfacing page