Zero ARB Service Manual

Revision Date – 15/07/2020 page 15
TROUBLESHOOTING
6.4 Cooling
Symptom
Possible Cause(s)
Suggested Action(s)
Fridge does not cool.
Compressor runs.
Poor ventilation.
Check that there is sufficient clearance
around the fridge and that the fan is not
obstructed.
Compressor starts and stops
because the battery
protection system is active.
Error light flashes once every
4 seconds.
Check that the correct battery protection
setting is selected (refer section 6.6).
Check that vehicle wiring is adequate
(refer to section 8.1).
NOTE: In the rear of a vehicle, the customer may be unaware that
this is occurring.
The lid seal is damaged or
missing.
Check seal is installed correctly into lid
and it is in good condition. Replace seal if
damaged or missing.
Leak in refrigerant system.
Look for visible oil leaks around the
refrigeration lines, compressor and
condenser. If a leak is detected, contact a
qualified refrigeration mechanic for
service advice.
If no leak detected, contact a qualified
refrigeration mechanic and request that
the system is pressure tested.
Blockage within the
refrigeration system.
Contact a qualified refrigeration mechanic
for service advice.
Fridge does not cool.
Compressor does not run.
Faulty compressor control
unit.
Test compressor control unit (refer to
section 8.3) and replace if necessary
(refer to section 9.5).
Faulty control panel circuit
board.
Test compressor control unit (refer to
section 8.3). If control unit ok, test fridge
with new control panel circuit board and
replace if necessary (refer section 9.4).
Faulty main circuit board.
Test compressor control unit (refer to
section 8.3). If control unit is ok, test with
new main circuit board and replace if
necessary (refer to section 9.6).
Faulty thermistor.
Test compressor control unit (refer to
section 8.3). If control unit is ok, test with
new thermistor and replace if necessary
(refer to section 9.10).

Zero ARB Specifications

General

Brand	Zero
Model	ARB
Category	Freezer
Language	English