Samsung FE-N300WX/XAA User manual

Fast Track Troubleshooting
Model:
FE-N300WX/XAA
Publication # tsFE-N300 Revision Date 07/19/2010
IMPORTANT SAFETY NOTICE – “For Technicians Only” This service data sheet is
intended for use by persons having electrical, electronic, and mechanical experience
and knowledge at a level generally considered acceptable in the appliance repair trade.
Any attempt to repair a major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible, nor assume any liability for
injury or damage of any kind arising from the use of this data sheet.
WARNING: It is critical to route wires and wire harness identical to the way they
were, to prevent electromagnetic interference causing possible fault codes.
Induction
Burner
Radiant
Burners
Inverter
PCB
Power
PCB
Main
PCB Inverter
Coil
Touch
Pad PCB
Component Voltage Wattage Resistance @ Room Temp Component Voltage Wattage Resistance @ Room Temp
LR (Rad) 240vac 1200W 45~50Broil 240vac 3800 W Approx : 13 ~ 16
RF (I) 240vac 9”-2200/3200W 0.01~1Bake 240vac 3000 W Approx : 26 ~ 30
LF (Rad) 240vac 1400/3000 41/19Convection 240vac 800W Approx : 70 ~ 73
RR (Rad) 240vac 1200W 45~50Warming 120vac 600 W Approx : 22 ~ 25
DoorLockMtr 120vac 1750~1850Ω
ConvFan 120vac 20~30Ω(Wht) 120vac 75~80Ω
SubConvFan 120vac 85~100Ω(Red) 13.5vac 1.8~2.2Ω
DCCoolingFan 12vdc (Yel) 8vac 0.8~1.2Ω
Induction/Radiant Elements Oven Elements
Heating Elements
Components
LowVoltageTransformer
1

2

CN01
Door Plunger
Door Lock Switch
CN11 Comm to CN604
CN02
Oven Sensor
CN05 Connector
to Sub PCB Ass’y
CN602
CN07 15 pin
ribbon connector
to Keypad
CN04 Connector
to Sub PCB Ass’y
CN603
CN10 LV Transformer
Red~Red (13.5vac) 1.5~2.5
Yellow~Yellow (8vac) 0.8~1.5
CN08 LV Transformer
Primary (120vac) 75~80
CN09 120vac supply
CN502 Induction & Hot
Surface Lamps
CN501 Temp
Protector
RY603 Broil
Relay
RY604 Bake
Relay
RY602 Double Line
Break Relay
CN601
Oven Lamp
Conv. Fan
Door Switch
RY608 Warm
Relay
RY405 Source
Relay
CN602
To CN05
CN204 Inverter
PCB Comm line
CN301
DC Fan Mtr
CN101
120 VAC
CN203
RF Induction Top
Sensor
RY607 Conv.
Relay
CN603
To CN04
CN604 Comm
To CN11
CN205
To Touch PCB
RY401 Source
Relay
3

A
(Temp oF) Resistance (Ω)Input volt
-4 60879 4.919
34 22707 4.789
41 19085 4.751
50 15449 4.696
59 12583 4.632
68 10309 4.558
77 8494.5 4.473
86 7037.3 4.378
95 5860.4 4.271
104 4904.9 4.153
113 4124.9 4.024
122 3485 3.885
131 2957.5 3.737
140 2520.5 3.580
149 2157 3.416
158 1853.3 3.248
167 1598.4 3.076
176 1383.6 2.902
185 1202 2.729
194 1047.8 2.558
203 916.42 2.391
212 804.08 2.229
221 707.7 2.072
230 624.75 1.923
239 553.11 1.781
248 491.06 1.647
257 437.16 1.521
266 390.2 1.403
275 349.18 1.294
284 313.24 1.193
293 281.67 1.099
302 253.87 1.012
311 229.33 0.933
320 207.62 0.860
329 188.37 0.793
338 171.25 0.731
347 156 0.675
356 142.38 0.623
365 130.2 0.576
374 119.29 0.533
383 109.48 0.493
392 100.65 0.457
401 92.7 0.424
410 85.51 0.394
419 79.01 0.366
428 73.12 0.341
437 67.77 0.317
446 62.9 0.296
455 58.47 0.276
464 54.43 0.258
473 50.74 0.241
482 47.36 0.226
491 44.26 0.212
500 41.42 0.199
509 38.81 0.187
518 36.41 0.176
527 34.2 0.165
536 32.16 0.156
545 30.28 0.147
554 28.54 0.139
563 26.92 0.131
572 25.43 0.124
(Temp oF) Resistance (Ω)Input volt Degree ºF Resistance Ω
0 932.12
14 961.86
23 980.95
32 1000.00
41 1019.02
50 1038.02
59 1056.99
68 1075.92
77 1094.83
86 1113.71
95 1132.56
104 1151.38
113 1170.17
122 1188.93
212 1374.93
302 1558.01
392 1738.06
482 1915.39
572 2089.69
662 2261.07
752 2429.52
842 2595.05
932 2757.65
1000 2878.57
Induction Coil Temperature Sensor Temp/Resistance/Voltage Oven Temp Sensor
Resistance Chart
The oven sensor is considered
open if it measures > ~2950
The oven sensor is considered
shorted if it measures < ~930
2b
2a
1b
AB
LF Burner
1b
LR & RR Burner
Position Color
ABlue
B Yellow
1b Red
2b Dark Red
2a Black
Position Ohms
1b‐2b ∞Ω
2a‐"A" 45~55Ω
2a‐"B" 42~48Ω
LFradiantelement
A
Position Color
(RR) A Red
(LR) A Yellow
(RR) 1b Yellow
(LR) 1b Red
(LR) 2b Orange
(RR) 2b Gray
2a Black
Position Ohms
1b‐2b ∞Ω
2a‐"A" 45~50Ω
LR&RRradiantelement
2b
2a
1b
2b
2a
LR
RR
4

Display
Failure
Codes
Code Cause Solution
E27
E28
Oven sensor opened(over 2950Ω)
Oven sensor shorted (Under 930Ω)
Disconn e ct se nsor. Che ck re sista nce :1080Ωat room temp If off
value, replace sensor. If sensor is OK, check harness. Check
resistance of sensor connector on main PCB (Normal:2850Ω)
E-08
E-0A
Oven not heating error
Oven over heating error
Disconn e ct se nsor. Che ck re sista nce :1080Ωat the room temp.
If off value, replace sensor. Check resistance of the broil, bake
& convection heater. Check DLB of sub PCB, Broil, Bake and
Convection heater relays are being activated Check wiring
harnesses between main PCB on sub PCB. Check resistance of
oven sensor connector on main PCB. (Normal : 2850Ω)
SE Shorted key
Check keypad connector at main PCB. Check for short between
main PCB and connector or keypad and cable. If no problem
with connector and cable of keypad, replace the main PCB.
E-OE Door locking error
Check wiring harness connections between door lock switch
and motor. Check resistance of door lock motor ,1750~1850Ω
at the room temperature. With operating door lockout,
measure voltage at door lock motor. (Normal Voltage : AC
120V) Check whether door locking switch is operating properly.
LE Low Voltage Error It occurs when the DC 12V is dropped under 9V.
It may occurs due to defects of PCB or wiring.
E-54 Communication error
(Oven Main PCB ↔HYB30M)
Check harness connection between Oven main PCB and
HYB30M PCB. If there is no problem with connector or wire,
replace the Oven main PCB or HYB30M PCB.
E-55 Communication error (Oven Main
PCB ↔Touch Control PCB
Check wire harness connection between Oven main PCB and
Touch control PCB. If there is no problem with connector or
wire, replace the Oven main PCB or Touch control PCB.
E-56 Warning error
(When Cooktop part has some error) Refer to Cooktop Failure Display Codes section
FL DC Motor
Locking Error
It occurs when the DC Motor cannot operate due to defects
of PCB, wiring or some disturbance on motor blade.
cE56 Communication Error (Oven Main
P CB ha s so m e p robl e m )
Instantaneous electical noise affect MICOM signal. Reset
Power. Check CN08, CN09, CN10. Replace Main PCB
Top Sensor (to) Open Error This is an open sensor error, disconnected wires or a defective
PCB, may occur when ambient temperature falls under 14° F.
Top Sensor (ts) Short Error This error occurs when there is an shorted sensor, wires or a
defective PCB
IGBT (Insulated gate bipolar
transistor) (bo) Sensor Open (high
resistance) Error (Inverter Board).
This is an open sensor error, disconnected wires or a defective
PCB, may occur when ambient temperature falls under 14° F.
IGBT (bs) Sensor Short (low
resistance) Error (Inverter Board). This error occurs when there is a shorted sensor, wires or a
defective PCB
Over Temperature Error It occurs when temperature of Top Sensor rises too high.
Pan Detection Error It occurs when the cookware is unsuitable or too small or
no cookware has been placed on the cooking zone.
Samsung 'Electric Range' Diagnostic Code Quick Guide
POWER LOSS CLEARS CODES 1)Press Clock AM/PM pad. 2) Press pad again, select AM. 3)Press # 1-
2-3-4 pads. 4)Press Set/Start pad. 5)Press Custom Cook & # 0 pads simultaneously for 2 seconds. 6)
error codes will display. 7) Press number 0 pad to review last 5 codes. 8) Press Clear/Off to exit.
5

Top Sensor Errors: If top sensor
resistance (CN203 power PCB)
matches chart, wiring is OK, Re-
place Ass’y Touch PCB, may
occur when the ambient tem-
perature falls under 14° F.
IGBT Errors: If top sensor resistance matches chart, wiring
is OK, Replace Ass’y Inverter Module PCB, may also occur
when the ambient temperature falls under 14° F.
Low Voltage Error: (12vdc below 9vdc) Check all wiring
between Main PCB and Ass’y Touch PCB and Power PCB if
OK, Replace Ass’y Power PCB.
Over Temperature Error: Verify proper pans being used. If top
sensor resistance matches chart, wiring is OK, Replace Ass’y
Touch PCB
Door Lock Error: Press and hold Cook Time & Delay Start for
3 seconds to test motor operation.
No Burner operation: Check relay terminal for 240vac, Check
wiring from Inverter PCB to Touch PCB. Remove power, Check
resistance between (G-E, G-C, E-C), any short replace Inverter
PCB.
Pan Detection Error: Verify proper pans being used. Check
wiring from Inverter PCB to Touch PCB, wiring is OK, Replace
Ass’y Touch PCB or Inverter PCB.
Gate Collector Emitter
Convection Fan: Measure 120vac voltage for over 1 minute,
as voltage is cycled.
Upper Sub Convection Fan: Measure 120vac voltage for over
1 minute, as voltage is cycled.
Lower Sub Convection Fan: Measure 120vac voltage for over
1 minute, as voltage is cycled.
Top Sensor Ass’y Power
PCB CN203 connector
Component Troubleshooting
Touch PCB
6