Daewoo KOC-8H6T7S, Service Manual

Page: 23 / 37

22
(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
Grill heater is
not heated.
Check D.C voltage
being supplied to
RELAY (RY2) coil
Faulty contacts of
RELAY
(RY2) or open
relay coil
Replace
Check continuity of
secondary interlock switch
Malfunction of
secondary
interlock switch
No
continuity
Adjust or
replace
Defective touch
control circuit
0V
Approx.
24V 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)Convection
heater is not
heated.
2)Convection
fan does
not rotate.
Check D.C voltage
being supplied to
RELAY (RY3, RY6) coil
Faulty contacts of
RELAY
(RY3,RY6) or
open relay coil
Replace
Check continuity of
secondary interlock
switch
Malfunction of
secondary
interlock switch
No
continuity
Adjust or
replace
Defective touch
control circuit
0V
Approx.
24V DC
Replace
Check continuity of
(heater or fan)
Defective heater
or fan
No
continuity
Replace