LG LTRM1240SW Service Manual page 30

(TROUBLE 6) When toaster operates, strange code can be seen on the display and stop with beep sound.
CONDITION
1. "F-1" code.
2. "F-2" code.
3. "HOT" code.
CHECK
Check continuity
No continuity.
of thermistor.
Continuity.
Check the
No continuity.
continuity of
heater.
Continuity.
Check the
Continuity.
connection
between CN3
connector and
No continuity.
PCB assembly.
Check the CN3
Attached
connector
whether 2 wire
leads are
Seperated
attached.
RESULT
Defective
thermistor
Defective heater
Defective PCB
assembly.
Loose connection
2 wire leads are
shorted contact
Defective PCB
assembly.
Internal
temperature is
over 220 deg c
-29-
CAUSE REMEDY
Replace thermistor
Replace toaster
Assembly.
Replace PCB
Assembly.
Connect them
tightly.
Apart 2 wire leads
as far as possible.
Replace PCB
assembly.
Allow the toaster to
cool down.
(Automatically fan
will blow for
3 minutes to cool
this unit)