Daewoo KOR-637V0A, Service Manual, Page: 23 / 37

22
CONDITION CHECK
Check continuity of primary
interlock switch
Malfunction of
primary interlock
switch
RESULT
No
Continuity
CAUSE REMEDY
Adjust or
Replace
No
purification
Faulty cantacts of
RELAY(RY3) or
open relay coil
Replace
Check continuity of secondary
interlock and D.O.M switch
Check D.C. Voltage being sup-
plied to RELAY(RY3) Coil
Malfunction of
primary interlock
and D.O.M switch
No
Continuity
Adjust or
Replace
Defective ballast
or UV lamp
OV
Approx
15VDC
Replace
(TROUBLE 4) Press purification button, but oven don't start purifying.