Zero ARB Service Manual

Revision Date – 15/07/2020 page 13
TROUBLESHOOTING
DC Power Supply (continued)
Symptom
Possible Cause(s)
Suggested Action(s)
Fridge runs but digital
display is not visible.
Faulty control panel circuit
board.
Test with new control panel circuit board
(refer to section 9.4). If symptom resolved,
replace circuit board.
Fridge runs but cannot
change target temperature.
Faulty control panel circuit
board.
Test with new control panel circuit board
(refer to section 9.4). If symptom resolved,
replace circuit board.
Fridge does not run, “E2”
displayed and Check light
flashes twice every 4
seconds.
The fan is not connected to
the compressor control unit.
Check the fan wiring to ensure the “+ve”
and “–ve” fan wires are correctly
connected to the compressor control unit
(refer section 9.9).
Faulty fan.
Test with new cooling fan (refer to section
9.9). If symptom resolved, replace fan.
NOTE: The fan must be running whenever
the compressor is running.
Faulty compressor control
unit.
Test compressor control unit (refer to
section 8.3). If symptom resolved, replace
control unit (refer to section 9.5).
Interior cabinet light does
not work.
Interior LED is faulty.
Replace LED.
No power to fridge.
Check that either 12/24V DC or 100-240V
AC power is being supplied to the fridge.
Faulty main circuit board
Test operation of light with new main
circuit board. If symptom resolved, replace
circuit board.
Faulty light switch
Replace cabinet assembly.

Zero ARB Specifications

General

Brand	Zero
Model	ARB
Category	Freezer
Language	English