Haier HRF-349AA, Service Manual

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dissipation make the compressor running without stop.
F. Electric leakage of refrigerator
1) Slight electric leakage
Electric insulation has deteriorated due to being affected with damp,
thus resulting in slight electric leakage.
2) Serious electric leakage
Refrigerator case has become live due to faults occurred in some
electric devices or the erroneous wiring in installing power cord plug or
outlet by the user. This is very dangerous.
3) Electric leakage test
a) Slight electric leakage
A tingle sense will be experienced as soon as you touch the metal parts
of the refrigerator with your hand .When you test them with a test
pencil ,its neon lamp will come on .In that case ,the first thing you need to
do is to determine whether the grounding is perfect .If the grounding is no
problem ,turn off the refrigerator immediately ,then check the insulation of
electric circuits with an avometer .
b) Serious electric leakage
Never touch the case body of the refrigerator ,its door handle or other
metal parts with your hand .Test the refrigerator with a test pencil ,it will
light up intensively ;measure the resistance between the power cord plug
and the case body with an avometer ,the reading will be zero (0
Ω
); in the
worst case ,the fuse will be blown .Check the 3-prong outlet to see whether
the live wire and the null line are inversely connected ,this makes the
ground protection lead-out from the power cord plug being connected to the
live wire .Another possibility is that the live wire and null line of the outdoor
power supply circuit have been inversely connected accordingly ,this
makes the null line become a live wire .
G .Stronger vibration and loader noise
1)
Refrigerator placed improperly
a) Uneven ground
Uneven
ground will cause the refrigerator to be placed
unsteadily ,causing stronger vibration and noise during its operation .
b) Leveling screws not properly adjusted
If the leveling screws on refrigerator legs have not been adjusted
properly ,vibration and noise will still occur even if the refrigerator has been
placed on a level ground .
2)
Abnormal noise from compressor
Three suspended spring inside the compressor case are out of
balance ,and strike against the case ,moreover ,the wear of compressor
parts may cause noise sometimes .
3)
Resonance of tubing and loosening of parts
Improper and compact laying of tubes or the loosening of parts may
cause vibration and noise .
Maintenance Service and Trouble Shooting