Kenmore 795.583*.410 Service Manual page 117

12-2 CHECK B
B1. LED Blinks once, then repeats. (FCT0 Fault: A-inverter)
Blink OFF Blink OFF
- Purpose: Detecting motor current and voltage error.
- Check voltage at point A (motor voltage),
and point C (capacitor voltage) when compressor is off.
Spec: Points A, B & C 2.5V ± 0.3V
Blink time 1
(FCT 0) Check B1
Protection
Blink time 1
logic
(FCT 0) Check B1
Check B
Out of spec?
(2.2 - 2.8V)
N
Reset Power
Caution: Devices should not be short - circuited during check C
12-2 CHECK B
B2. LED Blink two times, then repeats (Stroke Trip)
Blink Blink OFF Blink Blink
- Purpose: Prevent abnormally long piston strokes
- Case 1
If compressor doesn't work and LED blinks
Cause: Possibility harness from compressor to PCB might be defective.
-Case 2
If compressor works intermittently and LED blinks
Cause: Condenser fan or freezer fan is not running. Sealed system problem such as moisture restriction, restriction at capillary
tube or refrigerant leak.
Logic: Compressor is forced to off and then tries to restart after 1 minute.
Protection
Blinks 2 times
logic
(Stroke Trip) Check B
Check B
Replace
driver
OK
PCB
NG
Cycle
Fix
Check E
cycle
Repeat check
procedure
point B (motor current)
Y
Replace Driver PCB
OFF
.
Compressor
Y
doesn't work
N
works intermittently
Y
N
Stroke Trip
occur?
Protection Logic
GND
Voltage
N
Fix harness
Y
Check
connections
Check C
Y
Compressor
Reset
power
117
GND
B
N
Capacitor
Replace
Spec.
capacitor
Check C
Y
N Replace
Compressor
damage
compressor
Check C
Y
C
A