Kenmore K90-150 Owner's Manual page 34

TROUBLESHOOTING CHART #2
CHA_
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CHECK THAT CIRCUIT BREAKER IS ON OR
FUSES ARE OK AT THE ELECTRICAL PANEL
OK
CHECK THAT SERVICE SWITCH IS ON
,_DE
CHECK CASTING TEMPERATURE SAFETY
SWITCH. PUSH RESET BUTFON ON SWITCH.
CONTACTS OPEN (BUTTON UP) OR CLOSED
(BUTFON DOWN)?
lr CLOSED
CHECK WIRING TO IBC. 120 VAC BETWEEN
TERMINAL 1 AND 3 AT WIRING HARNESS
PLUG CN7?
YES
120 VAC BETWEEN TERMINALS 1 AND 3 AT
CONNECTOR CN3 ON IBC?
YES
120 VAC AT TRANSFORMER PRIMARY
TERMINALS?
YES
24 VAC AT TRANSFORMER SECONDARY
TERMINALS?
YES
I 24 VAC AT WIRING HARNESS PLUG CN2?
YES
REPLACE IBC
CHECK FOR 120 VAC BETWEEN TERMINALS
1 AND 3 AT CONNECTOR CN5 ON IBC?
YES
CHECK FOR 120 VAC AT CIRCULATOR
YES
REPAIR/REPLACE CIRCUL&TOR
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NO
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CHECK WATER LE'VEL IN BOILER. CHECK
FOR AIR TRAPPED IN TOP OF BOILER.
CONTACTS WILL NOT STAY CLOSED UNT;L
SOILER COOLS OFF.
REPLACE/REPAIR WIRING FROM SERVICE I
SWITCH TO iSC
I
REPLACE IBC I
REPAIR WIRING TO TRANSFORMER ]
REPLACE TRANSFORMER I
PUSH RESET BUTTON ON CASTING TEMP.
SAFETY SWITCH.
CHECK CONTINUITY OF CASTING TEMP
SAFETY SWITCH CONTACTS. CONTACTS
OPEN OR CLOSED?
CLOSED _ OPEN
REPLACE CAST. TEMP.
SAFETY SWITCH.
REPLACE/REPAIR WIRING FROM
TRANSFORMER TO ISC
REPLACE IBC
REPLACE/REPAIR W]R[NG FROM
IBC TO CIRCULATOR
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