Service manual

AUX air conditioner service manual
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heat exchanger (as condenser) for heat transmission process passing through pipe C, and enters into
the indoor heat-exchanger (evaporator) passing through capillary tube. Finally, it will enter into pipe S
from pipe E and return back to the compressor for concluding a refrigerating cycle. The flow process
is indicated in Chart 1:
When the air-conditioner runs the heating mode, the loop of the solenoid guiding valve is electrified
and the iron core drives the valve bowl to move right. Then the capillary tube a connects to d (in high
pressure) and b connects to c (in low pressure). Because the capillaries a and d connect with the
discharge pipe of compressor, they will form a high-pressure zone being filled with the high-pressure
gas. However the capillaries b and c connect with the suction pipe of the compressor, they will form a
low-pressure zone. At this moment, the piston moves to the right side by pressure, then, D connects to
E, the high-pressure gas refrigerant in D pipe flows into the indoor heat exchanger (as condenser) for
heat transmission process passing through pipe E, and enters into the outdoor heat-exchanger
(evaporator) passing through capillary tube. Finally, it will enter into pipe S from pipe C and return
back to the compressor for concluding a heating cycle. The flow process is indicated in Chart 2: