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4. Troubleshooting
4-1 Failure Display Codes
There is a error code and two kinds of error codes. Possible error codes
during use can be checked before service.
1. Press CLOCK AM/PM pad. Clock
2. Press CLOCK AM/PM pad again.
3. Press a number pad.
4. Press START/SET pad. Start/set
5. Press CUSTOM COOK and number 0 pads at the
same time for 2 seconds.
Error codes are displayed.
Custom
Cook +
6. Press number 0 pad, the latest 5 error codes can
be checked. But, if the oven turns off, the stored
error codes are deleted.
7. Press CLEAR/OFF pad to return to normal display
mode.
Oven sensor error (Measure or Check tool : Multimeter)
Failure code CAUSE SOLUTION
1. Disconnect power. Open the back cover.
Disconnect sensor harness from control
Measure sensor resistance
oven sensor opened :1080 at the room temperature
E-27 If there are any problems, replace oven
(over 2950 )
sensor.
2. If there is not any problem with oven sensor,
Please check whether there is a damaged
therminal or wire on harness.
Oven sensor shorted.
E-28
(Under 930 ) 3. Check resistance of oven sensor connector on
main PCB (Normal:2850 )
30
4. Troubleshooting
4-1 Failure Display Codes
Safety error
Failure code CAUSE SOLUTION
1. Disconnect power. Open the back cover.
Disconnect sensor harness from control.
Measure sensor resistance:1080 at
E-08 Oven heating error the room temperature If there are any
problems, replace oven sensor.
2. Check the broil, bake and convection heater.
Check the resistance of the each heater.
3. Check whether DLB of Main PCB, Broil, Bake
and Convection heater relay are being worked
normally.
4. Check whether there is any disconnection of
E-0A Oven heating over harness which is linked with main PCB on sub
PCB.
5. Check the resistance of oven sensor
connector on main PCB. (Normal : 2850 )
1. Check whether cable of keypad has been
inserted into connector of Sub PCB.
2. Check whether between Sub PCB and
connector or keypad and cable have a short
- SE - Shorted key
circuit.
3. If there is not a problem occurred with
connector on Sub PCB and cable of keypad,
replace the Sub PCB.
1. Disconnect power. Open the back cover.
Check wether harness has been connected
with door lock switch and motor.
2. Con rm whether resistance value of door lock
motor is to be normal one or not.
E-0E Door locking error 3. With operating door lockout, measure a
voltage of connector on harness which is
linked with door lock motor.
(Normal Voltage : AC 120V)
4. Check whether door locking switch is being
worked normally.
oven sensor opened 1. After 20 seconds from starting to work of
E-27
(over 2950 ) oven, buzzer is beeping 10 times long and
then nally it displays "E-27" or "E-28" as
Error message.
2. If a series of function for error is not performed
Oven sensor shorted. at all, please make sure through the method
E-28 of 4-1 on 31 page.
(Under 940 )
31
4. Troubleshooting
4-1 Failure Display Codes
"E-27"
or
"E-28"
oven sensor
Disconnect power
Measure sensor resistance. No
Replace oven sensor
(1080 at the room temperature)
Ok END
Check the connecting condition of harness *reconnect
No
(Oven sensor and No CN02 of Main PCB) *repair damaged
harness replace.
Ok
(Main PCB)
(Main PCB)
Measure resistance of connector CN02
of Main PCB (Nomal : 2850 )
No
Make sure the pattern, soldering, damaged
parts related to oven sensor of Main PCB,
and repair them or replace Main PCB
according to case.
END
CN02
32
4. Troubleshooting
4-1 Failure Display Codes
Safety error
Failure code CAUSE SOLUTION
1. It will display "E-08" after buzzer is beeping 10
times long if it could not reach 100 F(38 c)
within 10 minutes during oven is working.
E-08 oven heating error
2. Please make sure through the method of
4-1 on 31 page, if if those series of working
for informing error take long time or not
functioned.
1. It will display "E-0A" after beeping 10 times Bz
long, if temperature is more than 600 F(316 c)
during oven is working excluding the case of
self-cleaning.
E-0A Oven heating over
2. Please make sure through the method of
4-1 on 31 page, if those series of working
for informing error take long time or not
functioned.
33
4. Troubleshooting
4-1 Failure Display Codes
Safety error
"E-08" or
"E-0A" or
"E-0E"
Disconnect power and sub PCB
* DLB, Bake, Broil,convection relay
check.(Nomal: ) * Replace Sub PCB
No
* Check whether there is any damaged * Solder again if pattern is damaged
parts of sub PCB pattern. or parts is wrong contacted.
Ok
END
* Measure oven sensor resistance.
(1080 at the room temperature) No *Reconnect after replacing the oven
* Check the connecting condition of sensor.
harness related with oven sensor.
END
Ok
* Check connector and harness connected to Sub PCB. No
* Check whether harness on connector
(CN04, CN05) of main PCB is connected nomally
into the connector(CN04, CN05) or not.
CN04 CN05
Ok
No
With replacing sub PCB or main PCB, and make set work.
Replace or repair the harness.
END Replace sub PCB or main PCB
34
4. Troubleshooting
4-1 Failure Display Codes
Failure code CAUSE SOLUTION
*Control lockout(press cooking time and Delay
start pads at the same time for 3 seconds.)
When 1 minute elapsed, It will display "E-
0E" after buzzer is beeping 10 times long, if
locking is occurred continually, or door locking
E-0E Door locking error is not working during self-cleaning or steam is
being operated.
Please make sure through the method of
4-1 on 31 page if those series of working
for informing error take long time or not
functioned.
E-0E
*Disconnect power.
*Get rid of harness connected with Lock motor
NO
COM
Door lock motor
* Micom switch check (com-NC,com-NO)
* Measure resistance of Lock motor No
* Replace micro switch or Lock motor.
Coil.(1750~1850 at the room temperature)
END
Ok
*Check whether No
*Check whether voltage(AC 120V) is offered to lock motor
with letting lock work or not.
Ok
*Check whether harness connected normally into CN501 No
of main PCB.
* Repair damaged harness or
replace
*Measure resistance CN501 of main pcb. * Replace main PCB.
No * Solder again if pattern is
(COM-NO: at the room temperature)
*COM : black color damaged or parts is wrong
*NO : yellow color contacted.
END
35
4. Troubleshooting
4-1 Failure Display Codes
Failure code CAUSE SOLUTION
When 10 seconds elapses, It will display
"-SE-" after buzzer is beeping 10 times long
if between main PCB and cable connector or
keypad and cable have a short circuit.
-SE- short key
Please make sure through the method of
4-1 on 31 page if those series of working
for informing error take long time or not
functioned.
Key
Connector
- SE - (CN01)
*Disconnect power.
*Take out keypad cable from the main PCB.
Sub PCB (Back)
* Repair the area of circuit
having short between
connector(CN01) pins on sub
* Check whether between connector(CN01) No PCB.
pin and pin on sub PCB have a short * Repair after confirming
circuit. whether pattern is between
micom and connector have
a short circuit or get damaged.
Ok
END
*Make sure whether between keypad and No
* Replace or repair keypad
cable have a short circuit.
Ok
END
*Replace Control PCB. (Touch Control PCB+Glass)
END
Control PCB
36
4. Troubleshooting
4-1 Failure Display Codes
Control PCB Operation
Sort of Control PCB
Main PCB
( Front ) ( Back )
Sub PCB
( Front ) ( Back )
Membrane
37
4. Troubleshooting
4-1 Failure Display Codes
* Explain of primary parts of Main PCB
IC02
(7812)
IC03
CN06 (7805)
CN10
ZNR1
(Varistor)
CN04,CN05 CN02 CN01 CN03
CN08, CN09
Explatin of the function of primary parts.
This is connector which is connected with Door plunger switch and Door lock switch.
CN01
(COM-NO)
CN02 This is connector which is connected with oven sensor.
This is to stop operating self-cleaning and steam mode if hot indicator lamp on cooktop is
CN03
lighted with being supplied with AC120V(L1, N).
CN04,CN05 This connector is to get all operating of relay on sub PCB to be connected.
This is consisted of 15 pin and take a role of getting a cable on keypad to connect with touch
CN06
PCB.
This is to supply power with primary on Low voltage transformer, and AC120V with main PCB
CN08,CN09 through harness.
It won t be problem even though CN08 and CN09 has been changed when you insert housing.
This is connector which take a role of supplying secondary voltage of Low voltage transformer
CN10
with main PCB.
This is the element to protect main PCB, getting varistor to work if over voltage is supplied with
ZNR1
varistor.
IC02 This is to supply DC12V with main PCB by voltage regulator.
IC03 This is to supply DC5V with main PCB by voltage regulator.
38
4. Troubleshooting
SYMPTOM DIAGNOSIS REMEDY
* Measure an input voltage. (240 120V
* check circuit breaker.
or 208 120V)
* Make sure that the state of wire is
* Measure an input voltage of terminal
connected with Terminal block.
block.
* Measure voltage of
connector(CN08,CN09) on main * Replace of repair if harness has been
PCB L1~N : 120V loosen or disconnected.
* Measure secondary voltage of Low * Replace if resistance of Low voltage
Voltage Transformer. transformer primary coil is over M .
Red + Red color : 13.5V (Thermal Fuse out)
Yellow + Yellow color : 8V
* Replace sub PCB if relay has been
* Make sure that the relay on sub PCB damaged or there is any cracking on the sub
oven not operating is being worked normally. PCB.
(No power, * Repair harness is connected main PCB with
sub PCB.
No display) * Make sure whether harness between
connector (CN04,CN05) on sub * After con rming whether harness has been
PCB and connector (CN04,CN05) inserted into relay on sub PCB or not, take
on main PCB has been loosen or action follow as;
disconnected. - Replace or repair harness.
- Replace or repair sub PCB.
* Measure resistance both ends of
terminal on thermostat.
(normal : 0 ohoms)
* Check whether harness is connected * Replace the thermostat.
terminal on thermostat has been * Replace or repair harness.
loosen or disconnected.
* Replace or repair after con rming the state
* Measure voltage regulator of working of main PCB.
(IC02,IC03) on main PCB.
- IC02 : 7812(DC 12V)
- IC03 : 7805(DC 5V)
* It will display "E-08" if it fail to reach * Replace after checking whether there is
100 F(38 C) within 10 minute in a any problem with oven sensor.
state of room temperature. (1080 at the Room temperature)
* Make sure whether harness is
connected with Broil, Bake and
* Repair and replace harness.
convection heater has been loosen
Oven temperature or disconnected.
is risen slowly.
* After taking out terminal from each heater,
* Make sure whether Broil, Bake,
measure resistance of heater and then
and convection heater has been
replace that if it is not a normal resistance
disconnected.
value.
* Make sure that heater relay and * Replace or repair relay.
pattern on sub PCB. * Replace or repair sub PCB.
39
4. Troubleshooting
SYMPTOM DIAGNOSIS REMEDY
* Check whtether temperature is risen
* Replace or repair it if relay on sub PCB or
over 400 F(202 C) within 10 minutes
main have a short circuit.
in a state of room temperature.
Oven temperature
is risen fast.
* Check whether harness has been
* Replace or repair harness.
misconnected or have a short circuit.
* Measure resistance values of each
heater are within a normal extent or * Replace heater is in a abnormal state.
not.
The self-cleaning
feature will not
* The self-cleaning feature will not operate
operate when
* This is in normal state. when warming center or warming drawer
warming center or
is on.
warming drawer
is on.
Make sure that keypad cable on touch Replace after con rming whether it has been
PCB is in normal state. loosen or disconnected.
Keypad is not
worked normally Make sure connector (CN07) on main Replace or repair after con rming whether
in partially or PCB or PCB pattern. keypad cable has been loosen or disconnted.
entirely.
Check whether touch control PCB has Replace assembly of touch control pcb. ( PCB
been damaged. + Glass touch)
* Check warmer drawer relay (Ry06) * Replace terminal(T03) or relay(Ry06).
Warmer drawer on sub PCB and terminal(T03). * Replace sub PCB.
heating is not * Measure whether resistance value
working. of warmer drawer heater is in normal * Replace warmer drawer heater.
extent or not.
* Replace or repair if harness has been
loosen or disconnected.
* Check the oven lamp relay (Ry09) on
* Replace oven lamp relay(Ry09) or Ry-
Oven lamp is not sub PCB and connector (CN01).
source relay.(Ry01)
working.
* Replace Sub PCB.
Measure the resistance value of both * Replace lamp if it has been disconnected.
ends of lamp terminal. (120V 40W)
40
4. Troubleshooting
SYMPTOM DIAGNOSIS REMEDY
* Make sure that Radiant element
or In nite switch corresponded
* Replace In nite switch or Radiant element.
RR(Right Rear), RF(Right Front),
LR(Left Rear), LF(Left Front).
* Check whether harness is
connected with radiant element or
Cooktop is not In nite switch has been loosen or
working or being disconnected. * Replace or repair harness
occurred a * Check whether there is any crack or
abnormal working. the area of being disconnected of
harness.
* Replace or repair Warming Center.
* Measure whether RC(Rear Center) relay(Ry07)
Heater has been connected with * Replace or repair Warming Ry-source relay.
warming center relay(Ry07) on sub * Replace sub PCB.
PCB normally or not. * Replace or repair if harness has been
loosen or disconnected.
Check whether Convection fan * Replace or repair Relay.
relay (Ry08) on sub PCB and
connector(CN01) is in normal. * Replace or repair connector.
Convection fan is
not rotated. Make sure whether harness between * Replace or repair harness.
connector(CN04, CN05) on sub PCB
* Replace or repair connector.
and connector(CN04, CN05) on main
PCB has been connected normally. * Replace sub PCB.
* It has smell or smoke with burning dirt in
It has smell or oven or a foreign substance when oven has
smoke when oven been working initially.
This is in normal state.
has been started
initially. * Ventilate after getting self cleaning mode to
work.
LED display
is a little bit
* LED display is inferior. * Replace main PCB.
dim partially or
invisible entirely.
There is not
buzzer beep Check the state of buzzer on main PCB
sound when and whether PCB pattern have a short * Replace or repair main PCB.
keypad is being circuit or has been open.
worked.
41
4. Troubleshooting
4-2 Electrical Malfunction
Safety error
(Terminal Block)
No power L1 L2 : 240V
L1 L2 L1 N : 120V
or (Red)
(Black) L2 N : 120V
No display
N
(White)
*Check terminal block voltage. No * Reset the circuit breaker
AC 240V/120V or AC208V/120V
or check main power.
Yes
END
*Thermostat open check. (150