TROUBLE SHOOTING GUIDE
Following the procedure below to check if the oven is defective or not
1. Check grounding before checking trouble.
2. Be careful of the high voltage circuit.
3. Discharge the high voltage capacitor.
4. When checking the continuity of the switches, fuse or high voltage transformer, disconnect one lead wire from these parts
and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.
(TROUBLE 1) Door shut, timer set, but no cooking takes place.
C O N D ITION
C H EC K
R E SU LT
C A U S E
R E M ED Y
F use blow s.
C ontinuity
(C O M < -> NC )
(C O M < -> NC )
N o C ontinuity
N o
C ontinuity
C ontinuity
C ontinuity
0
infinite
Ω
or
A pp rox.
150~ 310
(norm al)
F use again
blow s
R eplace
N O T E 1
R eplace
N O T E 1
R eplace
N O T E 1
R eplace
R eplace
C hec k c ontinuity of
interloc k m onitor s w itch
w ith door closed
(C O M < -> NC )
C hec k c ontinuity of b oth
prim ary and s econdary
interloc k switc h w ith
door closed
C hec k c ontinuity of
prim ary w inding of low
voltage transform er
D isc onnect high voltage
fuse a nd operate the unit
C hec k c ontinuity of
prim ary in terlock s w itch
contact w ith door
partially open until
interloc k m onitor s w itch
contact c lo se
(C O M < -> NC close)
M alfunction
of inte rlock
m onitor
sw itch
M alfunction
of inte rlock
sw itch
S ho rted
contacts of
prim ary
interloc k
sw itch
D efectiv e low
voltage
transform er
D efectiv e
high v oltage
transform er
NOTE
W hen electric parts are checked, be sure the pow er cord is not inserted the w all outlet.
“C heck wire harness, wiring and connected of the term inals and pow er cord before check the parts listed below.
