AIR CONDITIONING
6
Sr.No.
PROBLEM / SYMPTOMS
POSSIBLE CAUSED
REMEDY
5
LOW SIDE - low (< 1.8 kg/
cm2) or Vacuum. HIGH SIDE -
HIGH (>28 kg/ cm2 &
discharge air slightly cool.
Clogging on HIGH
side.(Clogging between
Compressor Outlet &
evaporator inlet)
1. Discharge the system.
2. Change the filter drier
cartridge & clogged tube.
3. Evacuate the system
4. Charge refrigerant gas & oil
qty.
5. Check performance by
ODT/ CDT.
6
1) LOW SIDE - high (> 3.5 kg/
cm2). HIGH SIDE - LOW (< 28
kg/ cm2 2) Discharge air is
warm 3) Compressor - Noisy
4) Discharge Hose - Cool
Compressor Malfunctioning,
internal damage to
compressor
1. Discharge the system.
2. Change the Compressor &
Filter Drier cartridge
3. Evacuate the system
4. Charge refrigerant gas & oil
qty.
5. Check performance by
ODT/CDT.
Blockage in Suction Hose
1. Discharge the system.
2. Change the Suction pipe.
3. Evacuate the system
4. Charge refrigerant gas & oil
qty.
5. Check performance by
ODT/ CDT.
7
Line to condenser is
excessively hot OR
Compressor clutch is not
rotating OR Compressor clutch
slippage
Restricted flow of refrigerant
in system between
Compressor to Condenser
1. Discharge the system.
2. Change the Filter Drier
Cartridge. Remove the
restriction.
3. Evacuate the system
4. Charge refrigerant gas & oil
qty.
5. Check performance by
ODT/ CDT.
8
Compressor clutch
engagement is not satisfactory
1. Open Circuit 2. Weak
Battery 3. Faulty Clutch relay
connection 4. shorted Clutch
coil
Attend & repair
1. Discharge the system.
2. Change the Compressor
3. Evacuate the system
4. Charge refrigerant gas & oil
qty.
5. Check performance by
ODT/ CDT.
