Daewoo KOC-960P0A Service Manual page 31

Condition
Outlet has
proper voltage.
Fuse does not
blow.
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NOTE1 : All these switches must be replaced at the same time, please refer to page 21 and 22 for adjustment
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(TROUBLE 2) Heater does not heat (Food will not become hot).
Condition
Grill heater is
not heated
Check
Check continuity both
magnetron and heater
thermostat
Check continuity of
power supply cord
Check
Check continuity of
primary interlock
switch
Check continuity of
heater thermostat
Check continuity of
heater
Check D.C. voltage
being supplied to
RELAY (RY4) coil
Result
No Defective magnetron
Continuity and heater thermostat.
No Open power supply
Continuity
cord
Defective touch control
Normal
circuit
Result
No Malfunction of Primary
Continuity Interlock Switch
No Defective heater
Continuity thermostat
No
Defective heater
Continuity
Defective touch control
0V
circuit
Approx. Faulty contacts of
15VDC RELAY (RY4) or open
relay coil
34
Cause Remedy
Replace
Replace
Replace
Cause Remedy
Adjust or
replace
Replace the
heater
thermostat
Replace
Replace
Replace
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