National Luna LEGACY Fridge Manual
21
PROBLEM
POSSIBLE CAUSE
REMEDIAL ACTION
The fridge will not run
when connected to 12V,
but only when connected
to 230V mains.
12 Volt polarity reversed.
The battery is discharged.
The DC supply has inadequate
wiring, causing voltage loss.
(see page 8)
Fridge is initially connected to a
battery that is not fully charged.
Check polarity to battery is correct.
Recharge the battery.
Ensure all connections are secure.
Ensure supply has 4mm
2
wire or
thicker and that the vehicle’s body is
not used as an earth.
Select “Low” on battery protection
(see page 9)
The Fault ID light
is flashing
once every 4 seconds.
The ventilation fan is
noisy or not running.
The ventilation fan is blocked or
damaged.
There is excessive dust or dirt
build-up on the fan.
Fan damaged.
Check the ventilation fan for
obstructions.
Ensure sufficient space is allowed
around the ventilation area. (page 6)
If the fan is broken, return the
refrigerator to an authorised agent
for repair (see page 23).
The Fault ID light is flashing
twice every 4 seconds.
The Fault ID light is flashing
three times every 4 seconds.
The compressor failed to start
correctly.
High pressure due to over-load
or Electronic Compressor Driver
failure.
Under high pressure conditions this
fault will rectify itself automatically
when gas pressures equalise.
Continuous 3-flash conditions may
require Electronic Compressor
Driver replacement by an authorised
service agent. (see page 22)
The Fault ID light is flashing
four times every 4 seconds.
The compressor is not
maintaining the correct
minimum speed.
Continuous 4-flash conditions may
require Electronic Compressor
Driver replacement by an authorised
service agent. (see page 22)
The Fault ID light is flashing
five times every 4 seconds.
Compressor area is over-heated.
The cooling fan is in-operative.
Ambient temperature very high.
Fridge over-loaded.
Check fan. Check for inadequate
ventilation (see page 6)
Wait for ambient temperature to
drop. (see page 20)
The Fault ID light is flashing
six times every 4 seconds.
Electronic Compressor Driver
failure (controller detects
abnormal parameters.)
Replace NL25-C3 Electronic
Compressor Driver (see page 22)
The thermostat display is
showing “ Prf “
The internal temperature probe is
faulty, damaged or disconnected.
Contact a National Luna service
agent for a probe replacement.
In the event of unusual or undesired operation, consult the table below before contacting a service agent.
Trouble Shooting
