Trouble Shooting - LG LRE30451SW Service Manual

PROBLEMS
Oven not operating.
Oven element does not
heat.
Surface element barely heats
Surface element will not heat
Higher than low-medium
Frequent cycling of surface
Element or warming zone
"HS" (Hot surface)Warning
message does not light up
Oven light fails to operate.
(Refer to the page 6-9)
Oven does not begin clean
cycle
Oven stop for Self clean
cycle

TROUBLE SHOOTING

POSSIBLE CAUSES & FAULTS
• Bad power control board (PCB)
• Power outage
• No line voltage
• Loose or bad wiring.
• Defective element.
• Bad Power control board(PCB)
• Loose or bad wiring connection at
element or terminal block.
• Defective Surface units control
PCB
• Defective Surface element.
• Low line voltage
• This is normal
• Defective cook-top control PCB
• Failed oven lamp.
• Circuit breaker or fuse is open
• Loose or bad wiring
• Defective light socket.
• Defective door switch
• Bad wiring
• Bad latch system
• Programming error
• Defective a point of contact with
door switch
• Test and/or replace PCB
➞ Refer to the page 6-1~6-3
• Verify power is present at unit.
• Verify that the circuit breaker is not
tripped
• Replace household fuse capacity
• Check circuit breaker.
• Repair or replace wiring
(see wiring diagrams).
• Test and/or replace element.
• Test and/or replace PCB
➞ Refer to the page 6-4~6-6
• Verify all connections are clean and tight,
replace broken wires
• Test and/or replace cook-top PCB
➞ Refer to the page 6-7~6-8
• Test and/or replace element.
• Line voltage should be minimum
240-volts. Of necessary, electrician should
repair cause for low line voltage
• The element will cycle on and off to
maintain the heat setting
• Test and/or replace cook-top PCB
• Check lamp and Replace is necessary
• Check circuit breaker or replace fuse.
• Repair or replace wiring
• Check light socket for continuity.
• Test and/or replace door switch
• Repair or replace wiring
• Check door locking motor and micro
switch
• Shut off power to oven for five minutes by
switching off circuit breaker.
Reset circuit breaker and try oven again.
• Test door switch and check the point of
contact between door and door switch
8-1
SOLUTIONS