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Troubleshooting Guide (cont'd)
ELECTRICAL SYSTEM CHECK
(Use diagram on page 33)
_,CAUTION I
Label all wiring before disconnecting an)"wiring; to ensure
correct reconnection. Failure to follow this instruction I
could cause improper and possible dangerous operation, I
I resulting in DEATH, SERIOUS BODILY INJURY, ORI
t PROPERTY DAMAGE. ]
No
i
I
I
I
I
Correct by wiring according to dia-
gram.
/
Go to Thermostat and Gas Supply L..L.....
Check section. V
Supply 110/120 volts.
I Turi1 oN.
Check at #1 for 1101120 volts to
ground.
• I
I
No
+
Replace switch.
Replace gas pressure switch.
NOTE: Requires minimum 31/2"
_C. for natural gas or 8" W.C. for
propane (L.E) gas to operate.
Check between # 2 and
wiring
#3.
Visually check that all components
are wired correctly according to
wiring diagram on unit.
NO ........ J
..... NO ........ .i
F
I
..... No ........ J
1"
I
I
I
Yes
!
forPilotheat.is lit and thermostat is calling
I
Yes
+
Does power cord or power wiring
have 110/120 volts available (recep-
tacle and/or unct on box)?
I
Yes
t Is on/off switch "ON"?
I
Yes
I Bl°wer mOt°r is running" I
/
Yes I' I Check at #2 for 110/120 volts toi
,-...... -_ ground. i
I
] Yes
!
"-"" t Unplug blower motor and check at
#3 i7or110/120 volts to ground.
..... No ........ a i
!
i
' I
' Yes
, +
]_" ...... No .......... : ] Replace blower motor. ]
34
Yes
continued on facing page