SERVICE MANUAL
Model: BD-429GAA
20
Issue 2009-03-09
Rev.
Ref0903S021V0
Compressor
runs without
stop,
temperature
in cabinet is
too low
1
1
.
.
The knob of temperature controller has
been set to “over cooling” position.
2
2
.
.
The contacting point of temperature
controller is adhered.
3
3
.
.
The temperature sensing probe of
controller is not placed well, and causes
maladjustment.
4
4
.
.
Compressor
efficiency
reduced.
1. Change the position to
moderate.
2. Repair or change.
3. Adjust to suitable position,
normally contact tightly with
evaporator cover.
4. Change
compressor.
Compressor
buzzes and
cannot be
started,
thermal
protection
unit jump
repeatedly.
1
1
.
.
Voltage is too low.
2
2
.
.
Starting relay out of order.
3
3
.
.
The starting coil of starting motor is
broken.
4
4
.
.
Compressor does not run.
1
1
.
.
Supplement a stabilizer,
adjust to rated value.
2
2
.
.
Change starting relay.
3
3
.
.
Change
compressor.
4
4
.
.
The shaft and piston in the
compressor is blocked,
please change.
After short
time of
operation,
over load
protection
unit cuts off
1
1
.
.
The voltage is too high.
2
2
.
.
Over load protection unit is not good, it
jumps earlier.
3
3
.
.
Starter contacting point is adhered.
4
4
.
.
There is short circuit in compressor.
5
5
.
.
There is mechanical problem in the
compressor.
6
6
.
.
Temperature around compressor is too
high.
1
1
.
.
Supplement a stabilizer and
adjust its value to rated.
2
2
.
.
Change over load protection
unit.
3
3
.
.
Change starting relay.
4
4
.
.
Change
compressor.
5
5
.
.
Change
compressor.
6
6
.
.
Increase heat radiation
space.
Too much
noise when
compressor
runs
1
1
.
.
The floor is loose.
2
2
.
.
The cabinet body is not stable and in
level.
3
3
.
.
When compressor runs, friction between
tubes and cabinet body causes
resonance.
4
4
.
.
Compressor fixing screw is loose.
5
5
.
.
The vibration absorption cushion for
compressor fixing is too tight, or too loose
or ageing.
1
1
.
.
Reinforce the floor.
2
2
.
.
Make the cabinet body stable.
3
3
.
.
Move the tube a little away to
avoid friction.
4
4
.
.
Make the screw tight.
5
5
.
.
Adjust the degree of tight or
loose of vibration absorption
cushion, or change cushion.
6
6
.
.
Change
compressor.
