Midea HD-332RWEN - Defrosting Function; Test Mode

Service Manual_2020-V1.0
42
refrigerating sensor according to the method in
described in Article 8.5 and then inspect the
sensor against the resistance value table in
10.8.
Step 3: Replace main control board
Step 4: Replace electrical wiring main harness
E5
❷档“On” of LED3
(❷Gear)simultaneously
Fault of F
defrost sensor
Step 1: Check whether the terminal CN8 is well
stuck, pull out the terminal and re-stick it in
place
Step 2: Check to see if there are foreign
matters on the terminal. Pull out the defrost
sensor in freezing chamber according to the
method in described in Article 8.5 and then
inspect the sensor against the resistance value
table in 10.8.
Step 3: Replace main control board
Step 4: Replace electrical wiring main harness
E7
❶档“On” of
LED4(❶Gear)
simultaneously
Ambient
temperature
sensor fault
Step 1: Check whether the terminal CN8 of
main control board is well stuck, pull out the
terminal and re-stick it in place
Step 2: Check to see if there’re foreign matters
on the terminal. Pull out the defrost sensor in
freezing chamber according to the method in
described in Article 8.5 and then inspect the
sensor against the resistance value table in
10.8.
Step 3: Replace main control board
Step 4: Replace electrical wiring main harness
9.10 Defrosting function
1.Defrost the freezing chamber as per the accumulative operation time of the Compressor2.If power
failure occurs abruptly to the Compressor and the defrosting sensor in freezing chamber is less than 0
o
C
after powering on, then first conduct defrosting once. If more than 0
o
C, then defrosting is not needed.
After that, conduct defrosting according to using condition and ambient temperature in a period between 6
and 24 hours as per the accumulative operation time of the Compressor.
9.11 Test mode
Test items
Testing Method
Expected result
Enter Test
Mode
The LED lights indicate ON means
changing it to flashing mode after
press “SET” key 20s under the
condition of temperature
adjustment. After that, press “SET”
key 7s to enter to forced operation
mode.
The refrigerator enters into testing mode when
the LED lights are off
After entering into test mode, if no
button is pressed within 25
seconds
then the refrigerator will exit the test mode and
return to normal operation mode
Select to
Enter into test mode and press
LED indicators on Gear 1, 2 light up and other