Overcharge; Bad Compression - TCL TAC-07CS Service Manual

3) Overcharge

(1) Symptoms
(2) Actions

4) Bad compression

(1) Symptoms
(2) Judgement method :• Close service valve of high pressure side in condenser (front seat) and connect the
Indoor
Unit
Note) If pressure gauge is near 0kg/cm
Otherwise, air flows into the refrigerating cycle or the compressor motor coating is taken off to cause the
poor insulation. So, care should be taken.
TCL Air Conditioner Service Manual
: • The temperature difference of suction-discharge air is 8°C or less, the running current
is higher than the specified current, the pressure of low pressure side is high, and
the compressor and suction pipe are cold.
If running in the condition, pressure switch activates at overload operation to make
continuous operation impossible, compressor is difficult to start, and fuse or breaker is
easy to be disconnected.
: Dischage the refrigerant. (By 3-5kg/cm
Charge refrigerant to the specified level.
Check for gas leak.
: • The temperature difference of suction-discharge air is little, the running current is less
than the specified current, the pressure of high pressure side is low, and the pressure
of low pressure is high.
manifold gauge to the service valve of low pressure side.
(Close the valve.)
• If the dial of pressure gauge does not indicate 0kg/cm
dition, the compressor is judged as bad.
Liquid side tube
Gas side tube
G, immediately stop the cooling.
2
G)
2
G or less by cooling in the con-
2
High
Low
11
Outdoor
Unit