24
(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 and
motor 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 motor)
Defective motor
No
continuity
Replace
Summary of Contents for KOC-9N4T7S
Page 5: ...4 3 EXTERNAL VIEW 542 329 514 1 1 OUTER DIMENSION 1 KOC 9N4T 9N5T 2 KOC 9N7T ...
Page 31: ...30 10 WIRING DIAGRAM 1 KOC 9N4T7S 9N4T7S24 9N5T7S 9N5T7R 9N5T7S21 9N7T7S 9N7T7S21 ...
Page 32: ...31 2 KOC 9N7T7SA2 ...
Page 38: ...37 MEASUREPOINT MP1 GND MP2 ...
Page 42: ...41 13 P C B CIRCUIT DIAGRAM ...
