Revision Date – 15/07/2020
page 14
TROUBLESHOOTING
6.3 AC Power Supply
Symptom
Possible Cause(s)
Suggested Action(s)
No power to fridge when
using a 100-240V AC power
supply.
Poor connection of plug to
back of fridge.
Check that plug is correctly installed into
the socket in back of fridge.
Device fuse in back of fridge
cabinet has blown.
Replace device fuse. Refer to section
No power to supply socket
from AC power source.
Check that there is power to the supply
socket from the AC power source.
NOTE: If using a poor quality power
generator, it is possible that the
supply voltage could be above or
below the 100-240V AC power
range and may not be a pure,
non-fluctuating sine wave.
Poor electrical connection
inside the fridge between the
AC power socket and the
compressor control unit.
Check AC electrical wiring within the
fridge.
NOTE: All AC electrical work should be
carried out by a qualified
electrician.
Faulty main circuit board.
Test with new main circuit board. If
symptom resolved, replace circuit board
Faulty compressor control
unit.
Test compressor control unit on AC power
). Replace if necessary.
Test with new compressor control unit. If
symptom resolved, replace compressor
control unit (refer to section
Device AC fuse repeatedly
blows.
Short circuit in 100-240V AC
fridge cable.
Check continuity of lead from plug to
socket. Replace lead if faulty or damaged.
Short circuit between
terminals “L” and “N” on
compressor control unit.
Check for short circuit between the “L”
and “N“ terminals on the compressor
control unit.
Unregulated and/or
fluctuating power supply.
For example
From an engine driven
generator.
Ensure that the generator has a voltage
regulator and is supplying a standard,
pure sine wave AC voltage without
fluctuation in voltage or frequency
NOTE: Ensure that the fridge is turned
off before starting or stopping
the generator.
Fault with compressor control
unit.
Test with new compressor control unit &
replace if necessary (refer section
).
