AIR CONDITIONING
8
Sr.No. PROBLEM / SYMPTOMS
POSSIBLE CAUSED
REMEDY
16
Compressor Noisy but working
OR Compressor noisy but not
working OR Compressor pulley
wobbling & no refrigerant in
circuit
Bearing of compressor
damaged
1. Discharge the system.
2. Change the Compressor
3. Evacuate the system
4. Charge refrigerant gas & oil
qty.
5. Check performance by
ODT/ CDT.
17
NO cooling effect
1. Check Refrigerant
2. Electric parts mal
functioning OR Loose
1. Discharge the system.
2. Evacuate the system
3. Charge refrigerant gas & oil
qty.
4. Check performance by
ODT/ CDT. Check the parts,
rectify
18
Water traces found on carpet
Check AC drain Grommet for
MUD clogging Check AC
drain pipe for breakage
Clean
1. Discharge the system.
2. Remove Cockpit & HVAC.
3. Change Drain housing
4. Assemble HVAC & Cockpit.
5. Evacuate the system
6. Charge refrigerant gas & oil
qty.
7. Check performance by
ODT/ CDT.
19
AC not working in Engine Idle
condition
Check FICD of Engine Check
Engine Idle RPM with AC ON
Rectify
Rectify & set RPM at proper
value
20
Blower is noisy or vibrating
Check Blower motor for any
entrapped things
Remove motor, clean & refit
21
Hissing noise heard when AC
is made ON
Low refrigerant in circuit
1. Discharge the system.
2. Evacuate the system
3. Charge refrigerant gas & oil
qty.
4. Check performance by
ODT/ CDT.
