atwood Air Conditioners (non-ducted AC-1351, AC-1501) - Manual (Page 16)

AC IOM 3/01/2013 rev 1 16
TROUBLESHOOTING
Control Pad will not illuminate when ON/OFF
button is pressed
Unit does not cool
Unit does not heat
Insufficient cooling capacity
- Check circuit breaker is on
- Control cable may be unplugged between outside
unit and inside fascia
- Check power supply to vehicle
- Check circuit breaker is on
- Control cable may be unplugged between outside
unit and inside fascia
- Check power supply to vehicle
- Ensure mode has been switched to heat (check green
LED)
- Thermostat set point must be above room
temperature
Note: The compressor has a 3 minute
delay before starting
- In very cold conditions the unit will take more time to
start producing warm air
- Ensure return air filters are clean
- Operate the unit on high fan speed to obtain
maximum capacity
- Ensure all windows, doors, sk ylights and hatches
are closed and curtains/awnings used to reduce heat
load, check for adequate insulation in roof & walls