Hisense BCD-740WPCZR/HC1(H) Service Manual page 58

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if the electromagnetic valve has the sound of reversing action, If yes, meaning the
electromagnetic valve is good.
Fault phenomenon 3：Reversing not reliable.
Detection method ：
Touch and hold "Alarm" button +"℉/℃" button for 3 seconds in 10 minutes after power-on,
it will enter maintenance model. The display will show "00" on freezer temperature display
area and "0" on fridge compartment temperature display area.
 Press " Eco" button until the display show "06" on freezer temperature display area.
Then press "℉/℃"button, when the display show "0" fridge compartment temperature
display area. It is forced order fridge compartment cooling at this moment. If the
temperature of fridge compartment does no drop, it means the fridge compartment
cooling system is abnormal.
Press "Eco" button until the display show "06" on freezer temperature display area. Then
press" ℉/℃" button, when the display show "1" fridge compartment temperature display
area. It is forced order freezer compartment cooling this moment. If the temperature of
freezer compartment does no drop, it means the freezer compartment cooling system is
abnormal.
Note：
When assembly the electromagnetic valve, pay attention to mark the pipeline, avoid
connection error；
Due to the electromagnetic valve internal seal uses rubber material , so when welding
the electromagnetic valve , the time should be not more than 5S. Long time to weld will
lead to high temperature and will be transfer to electromagnetic valve internal rubber,
causes the change of rubber, and may lead to electromagnetic valve abnormal work.
(when welding, winding some wet cloth on pipe and drench it at the same time).
Hisense Refrigerator