Mitsubishi Electric MR-C375C-W-A Service Manual page 19

Function Explanation
Thermistor (R) NG
4 Blinks
1. The Thermistor (R) connector lead wire
isn't orderly.
2. Thermistor (R) NG (break or short)
3. PCB plate (Ref Con assy) NG
Thermistor (A.T.) NG
6 Blinks
1. The Thermistor (A.T.) connector lead
wire isn't orderly.
2. Thermistor (A.T.) NG (break or short)
3. PCB plate (Ref Con assy) NG
Fan motor (Fan grille assy) NG
10 Blinks
1. DC motor is orderly connected.
2. DC motor NG (Motor un-rotate and
non-display)
3. PCB plate (Ref Con assy) NG
Fan motor (Outer motor assy) NG
11 Blinks
1. DC fan motor is orderly connected.
2. DC fan motor NG (Motor un-rotated,
and non-display.)
3. PCB plate (Ref Con assy) NG
PCB plate (Ref Con assy) NG
16 Blinks
1. PCB program (Ref Con assy) is NG
Refrigerant circuit is NG.
19 Blinks
1. Pipe cracked (Welding joint)
2. Gas leak
3. Compressor NG
Remark :
1.) For the refrigerator is NG more than one case, will show as the first symptoms before, such as Thermistor (F) NG (1 blink in 0.3 seconds) and
Thermistor (R) NG (4 blinks in 0.3 seconds). LED will blink 1 blink in 0.3 seconds until Thermistor (F) was corrected. Then change to 4 blinks in 0.3 seconds
and LED won't blink when Thermistor (R) was corrected.
2.) Ice making stop LED blink during the operational test for ice maker.
3.) Compressor won't work if the fridge have problem and LED blink.
4.) Characteristic value may be changed due to the product improvement.
Detecting method and corrective NG points
1. Check all points of Thermistor (R) connector
lead wire, may be unlock and struck insert.
2. If the resistance of Thermistor (R) is NG,
should be replaced the Thermistor (R) and
re-check the resistance.
3. If the resistance is OK., should be replaced
PCB plate (Ref Con assy) and re-check the
resistance.
1. Check all points of the thermistor (A.T.)
connector lead wire, may be unlock and
struck insert.
2. If the resistance of Thermistor (A.T) is NG,
should be replaced the Thermistor (R)
and re-check the resistance.
3. If the resistance is OK., should be replaced
PCB plate (Ref Con assy) and re-check the
resistance.
1. Check all points of DC motor connector
lead wire, may be unlock and struck insert.
Replace DC motor (Fan grille assy) and
2.
re-check display.
3. If the resistance is OK., should be replaced
PCB plate (Ref Con assy) and re-check the
resistance.
1. Check all points of DC Fan motor connector
lead wire, may be unlock and struck insert.
2. Replace DC fan motor (Outer motor assy)
and check display.
3. If the resistance is OK., should be replaced
PCB plate (Ref Con assy) and re-check the
resistance.
1. Replace a new PCB plate (Ref Con assy)
1. Check and corrective to each problem.
17
Display function of LED
1 Cycle
Light
1 2 3 4
No Light
0.3 sec 5 sec
1 Cycle
Light
1 2 6 1 2
No Light
0.3 sec
1 Cycle
Light
1 2 10 1 2
No Light
0.3 sec
1 Cycle
Light
1 2 11 1 2
No Light
0.3 sec
1 Cycle
Light
1 2 16 1 2
No Light
0.3 sec
1 Cycle
Light
1 2 19 1 2
No Light
0.3 sec