NEXON EV SERVICE MANUAL

FATC

TROUBLE SHOOTING

Sr.NO.

COMPLAINT

POSSIBLE CAUSE

REMEDY

Insufficient flow of cold

air

1. Evaporator clogged or frosted.

2. Air leaking from cooling unit or

air duct.

3. Air inlet blocked.

4. Blower motor faulty

1. Check evaporator.

2. Repair as necessary.

3. Repair as necessary.

4. Replace blower motor

Blower won't work even

when its switch is ON

1. Blower fuse blown.

2. Blower motor faulty.

3. Wiring or grounding faulty.

1. Replace fuse.

2. Replace motor.

3. Repair as necessary

Incorrect

temperature

output

1. Insufficient refrigerant quantity

2. Cabin Solenoid valve not open-

ing

3. Compressor is not working as

per desired speed

4. Clogging of expansion valve

5. Mixing of POE and PAG oil

6. Air ducts clogged.

7. Kinematics jammed

1. Recover and Recharge re-

frigerant

2. Check and correct solenoid

valve

3. Check software

4. Replace expansion valve

5. Remove compressor and

replace oil. Also flush AC

system with R&R machine.

6. Repair air ducts.

7. Repair/Replace kinematics.

Cold air comes out only

intermittently

1. Electrical connections loose near

compressor.

2. Compressor is cutting off based

on its body temperature.

3. AC relay faulty.

4. Expansion valve faulty.

5. Wiring connection faulty.

6. Faulty thermistor cut-in and/or

cut-off setting.

7. BCS system getting on frequent-

1. Check and correct electrical

connections

2. Check oil quantity, Conden-

ser fan working, Refrigerant

quantity and System pres-

sure,

3. Replace faulty relay.

4. Check expansion valve.

5. Repair as necessary.

6. Replace thermistor.

7. Check BCS systemworking

AIR FROM VENT IS NOT COLD ENOUGH

TROUBLESHOOTING HINTS

•

Working of compressor at correct speed: Step 1

•

Malfunction in blower unit or condenser: Step 4, 5

•

Malfunction in receiver / drier, expansion valve (valve close too much): Step 8, 9

•

Malfunction in refrigerant lines: Step 10- 13

•

A/C compressor system malfunction, insufficient compressor oil: Step 16

•

Too much compressor oil, or malfunction in expansion valve or heater unit’s air mix link system: Step 18-