Midea French-Door Series, Руководство по обслуживанию, Страница: 72 / 85

Service Manual_2020-V1.0
72
10. Compressor
10.1 Compressor on and off control specifications
1.1 When one of the following conditions is met, the compressor stops:
1) Measured temperature in refrigerator
room ≤ Shutdown temperature of
refrigerator room and
measured temperature in freezer room ≤ Shutdown temperature of freezer room, and
measured temperature in ice maker room≤ Shutdown temperature of ice maker room;
2) Enter defrosting cycle;
3) If the compressor runs continuously for more than 15 hours, it will stop at least 5 minutes.
1.2 When compressor shutdown time is more than 5 min, the compressor will start up once one of
the following conditions is met:
1) Measured temperature in refrigerator room ≥ Start up temperature of refrigerator;
2) Measured temperature in freezer room ≥ Start up temperature of freezer;
3) Measured temperature in ice maker room ≥ Start up temperature of ice maker room;
4) Refrigerator is set to forced cooling mode or super cooling.
★
When 1.1 and 1.2 are not satisfied, the compressor will maintain the original state.
10.2 Inverter board fault analysis
（
Option
）
Running status of LED
Fault Type
Troubleshooting and Solutions
The light stays on normal work
Blink once: light 1 second,
extinguish 1 second
Standby
Step 1: Test the voltage between the two pins of
communication, it should be
＞
1V, the voltage
between pins of L and N, it should be 110V
Step 2: If the test result of step 1 is fine, replace a
new inverter board
Step 3: If there is no voltage output between the
pins of L and N, please check the power supply
and power cable
Step 4: If there is no voltage output between the
two pins of communication, please check the
connection and connection wire between main
PCB and inverter
Blink once: light 0.5 second,
extinguish 1.5 second Overcurrent
protection
Step 1: Measure whether the U-V-W resistance of
compressor is same
Step 2: If ok, replace a new inverter board
Step 3: If the fault still occurs, replace a new
compressor
Blink twice: light 0.5 second,
extinguish 0.5 second, interval
time(extinguish) is 1.5 second
Overvoltage
Measure the voltage between L and N
1
）
If it is more than 138V, replace a new inverter
board
2
）
If more than 138V, please check the power