| Problem |
Possible Cause |
Remedy/Repair |
| There's little or no air coming from the vents (and you're sure it's
on) |
- The A/C fuse Is blown
- Broken or loose wires or connections
- The on/off switch is defective
|
- Check and/or replace fuse
- Check and/or repair connections
- Have switches checked and/or replaced
|
| The air coming from the vents is not cool enough |
- Windows and air vent wings open
- The compressor belt is slipping
- Heater is on
- Condenser is clogged with debris
- Refrigerant has escaped through a leak in the system
- Receiver/drier is plugged
|
- Close windows and vent wings
- Tighten or replace compressor belt
- Shut heater off
- Clean the condenser
- Have system checked
- Have system serviced
|
| The air has an odor |
- Vacuum system is disrupted
- Odor producing substances on the evaporator case
- Condensation has collected in the bottom of the evaporator
housing
|
- Have the system checked/ repaired
- Clean the evaporator case
- Clean the evaporator housing drains
|
| System is noisy or vibrating |
- Compressor belt or mountings loose
- Air in the system
|
- Tighten or replace belt; tighten mounting bolts
- Have the system serviced
|
Sight glass condition
- Constant bubbles, foam or oil streaks
- Clear sight glass, but no cold air
- Clear sight glass, but air is cold
- Clouded with milky fluid
|
- Undercharged system (see text)
- No refrigerant at all
- System is OK
- Receiver/drier is leaking desiccant
|
- Have system charged/checked
- Have system charged/checked
- System is OK
- Have system checked
|
| Large difference In temperature of lines |
- System undercharged
|
- Have system charged/checked
|
