Daewoo KOC-9Q4T Manuel de service Page 9

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(TROUBLE 4)
Grill heater (upper heater) is not heated; food will not become hot.
CONDITION CHECK
Check continuity of
primary interlock switch
Malfunction of
primary Interlock
switch
RESULT
No
continuity
CAUSE
REMEDY
CAUSE
REMEDY
Adjust or
replace
Main heater
is not heated.
Check D.C voltage
being supplied to
RELAY (RY3) coil
Faulty contacts of
RELAY
(RY3) or open
relay coil
Replace
Check continuity of
DOM switch
Malfunction of
DOM switch
No
continuity
Adjust or
replace
Defective touch
control circuit
0V
Approx.
12V DC
Replace
Check continuity of
heater
Defective heater
No
continuity
Replace
(TROUBLE 5)
1) Convection heater is not heated; food will not become hot.
2) Convection fan motor does no rotate.
CONDITION CHECK
Check continuity of
primary interlock switch
Malfunction of
primary Interlock
switch
RESULT
No
continuity
Adjust or
replace
1)Sub heater
is not
heated.
2)Convection
fan and
motor does
not rotate.
Check D.C voltage
being supplied to
RELAY (RY4, RY2) coil
Faulty contacts of
RELAY
(RY4, RY2) or
open relay coil
Replace
Check continuity of
DOM switch
Malfunction of
DOM switch
No
continuity
Adjust or
replace
Defective touch
control circuit
0V
Approx.
12V DC
Replace
Check continuity of
(heater or motor)
Defective heater
or motor
No
continuity
Replace
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