Midea HS-625FWEN, Service Manual

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Service Manual_2020-V1.0
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9.3 Mode setting
9.3.1
Locking and unlocking
In unlocking state, keep pressing the button A for 3 seconds to lock, and the locking beeping will be
rang.
In locking state, keep pressing the button A for 3 seconds to unlock, and the unlocking beeping will
be rang.
The refrigerator enters into locking state automatically 15 seconds after no button operation.
9.4 Defrosting function
◆
Defrosting theory:
The defrosting of evaporator is realized by the heating of heater, following the temperature rise, the frost
on evaporator becomes water, and the water flow into the evaporating pan via the draining system, the
water in evaporating pan evaporate away finally
◆
Defrosting steps:
Compressor shutdown--- the freezer fan motor closed, the heater start working ---the heater stop when
the temperature rise to setting--- after 7 minutes, the compressor will start--- after 8 minutes, the fan
motor will start work
◆
Meet one of the following conditions , defrost heating exit:
1)
When the defrosting sensor has no fault, the measured temperature Tfd ≥ the set temperature 12
℃
(54
℉
) which frozen defrost heating exit and the set temperature 7
℃
(45
℉
) which refrigerat defrost
heating exit
2) When the defrosting sensor has no fault, the defrosting time is
≥
60 minutes
3) When the defrosting sensor is faulty , the heater will stop after work 20 minutes
9.5 Open door alarm
When the door is opened, the door opening indicator light is on, and when the door is closed, the door
opening indicator light goes out;
At any time, when the door opening time of the freezing chamber is more than 5 minutes, it will enter the
door opening alarm, and the door opening alarm indicator light flashes according to 500ms opening and
500ms closing; The buzzer sounds with frequency of once per second or pressing any key can eliminate
the buzzer alarm.
Note: The door opening alarm time can be set through the APP and then remembered to the main board
after setting.
9.6 Error code and solutions
Fault code Fault content Steps for maintenance methods
LED
① ， ④
Light
together
Ambient
temperature sensor
fault
Step 1: Check whether the terminal of temperature sensor in main
control board is welll stuck, pull out the terminal and re-stick it in
place Step 2: Check whether the sensor wiring harness are
connected.
Step 3: Replace main control board.
Step 4: Remove the temperature sensor at the hinge, and replace
the temperature sensor.