Common Freezer Problems - Haier BD-478A Service Manual

(1) Switch off power.
(2) Remove side protection cover.
(3) Unscrew fastening nut.
(4) Hold the base end of temperature sensing tube and the controller, pull
out downward.
(5) Change with new temperature controller.

12.2 Common freezer problems

12.2.1 Freezer cannot be started
When switching on power, the freezer cannot be started. Determine first
that the failure is caused by inside or outside factors. The factors may be:
(1) Outside factors
① The fuse is burned, or the contact of plug and socket is not well, or the
voltage is too low.
② The knob of temperature controller is set to off position.
(2) In side factors
① Electrical problem of freezer (normally caused by connection terminals
coming off or not in good contact).
② Temperature controller out of order (contact point are burned or switch
element is damaged, etc.).
③ The start capacitor is bad.
MAINTENANCE SERVICE AND TROUBLE SHOOTING
Maintenance Service and Trouble Shooting
④ The starter relay or overload protector is bad. A bad starter normally is
caused by a burn a contact points or the welded point has come off; a
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