Haier PBFS21EDAP/S/E Service Manual page 37

Analysis of Trouble
When the heat-insulation layer inside the case body deteriorates or the door seal is not
closely touches the doorframe, the temperature in the refrigerator will rise and makes the
compressor running continuously.
Remedy
Check the heat-insulation layer for its damaged parts; repair it to improve its heat-insulation
property. If the door has deformed or the door seal is not tightly sealed against the case body,
repair them, respectively.
4) Too much food is placed in the refrigerator, or is placed too densely, resulting in poor
ventilation or poor conditions for temperature sensing, and hence no stoppage of the
compressor.
5) Too high ambient temperature, poorer ventilation and heat dissipation makes 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 ); 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