Indicator Lights - National Luna Trailboss Series Owner's Manual

Indicator Lights

DS TO
RUN FAULT ID
STATUS INDICATORS
This indicator will be illuminated whenever the fridge compressor is running
RUN -
E
TEMPERATURE
and the compartment is being cooled.
This indicator is used to identify fault conditions that may occur with the
FAULT ID - Power ON / OFF
(HOLD FOR 3 SECONDS)
refrigerator such as low power supply.
This indicator will flash a pre-determined number of times every 4-seconds
DOWN
when a particular fault occurs (see table below).
"SET MODE" - PRESS DOWN FOR 3 SECONDS
RAINED.
Low voltage. This is shown when the DC supply voltage is low. The battery could be
1
flat, wiring losses are too high or there is a poor connection to the power source.
2 Fan over-current cut-out. There is a problem with the ventilation fan. It is possible that
the ventilation fan is damaged.
DS TO
TEMPERATURE
3 Motor start error. The compressor has not started successfully. This can happen in
extreme environments where the refrigerator is heavily loaded & temperature is very high.
4 Minimum speed error. The motor cannot maintain a minimum speed of 1900 rpm.
This can be the result of an internal electronics failure.
"SET MODE" - PRESS DOWN FOR 3 SECONDS
5 Thermal cut-out. The electronic circuitry has over-heated. This happens in very hot
environments. This can occur when the fridge is over-loaded with warm contents and
E
the ambient temperature is high. The electronics will re-set when the temperature
has dropped.
6 Electronic Compressor Driver hardware failure.
RAINED.
National Luna Trailboss Series Fridge Manual
Trouble Shooting
Status indicators will identify the
current operation of the refrigerator.
UP
FAULT D ESC R I P T I ON
UP
Power ON / OFF
(HOLD FOR 3 SECONDS)
DOWN
Page 14
Trouble Shooting
In abnormally high temperature conditions, the compressor may switch off for one minute
and then attempt to restart. It will continue to do so until temperature conditions improve.
In the event of unusual or undesired operation, consult the table below before contacting a service agent.
PROBLEM POSSIBLE CAUSE
The fridge will not run 12 Volt polarity reversed.
when connected to 12V, The battery is discharged.
but only when connected
The DC supply has inadequate
to 230V mains.
wiring, causing voltage loss.
(See page 9)
Fault ID light flashes once
every 4 seconds.
Fridge is initially connected to a
battery that is not fully charged.
The ventilation fan is The ventilation fan is blocked or
noisy or not running. damaged.
There is excessive dust or dirt
build-up on the fan.
The Fault ID light is
Fan damaged.
flashing twice every
4 seconds.
The Fault ID light is flashing 3 The compressor failed to start
times every 4 seconds. correctly.
High pressure due to over-load
or Electronic Compressor Driver
failure.
The Fault ID light is The compressor is not maintain-
flashing 4 times every ing the correct minimum speed.
4 seconds.
The Fault ID light is flashing Compressor area is over-heated.
5 times every 4 seconds. The cooling fan is in-operative.
Ambient temperature very high.
Fridge over-loaded.
The Fault ID light is flashing
Electronic Compressor Driver
6 times every 4 seconds.
failure (controller detects
abnormal parameters.)
The thermostat display is The internal temperature probe is
showing " Prf " faulty, damaged or disconnected.
REMEDIAL ACTION
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 10 and 11)
Check the ventilation fan for
obstructions.
Ensure sufficient space is allowed
around the ventilation area. (page 7)
If the fan is broken, return the
refrigerator to an authorised agent
for repair (page 17).
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. (Page 16)
Continuous 4-flash conditions may
require Electronic Compressor
Driver replacement by an authorised
service agent.
Check fan. Check for inadequate
ventilation (See page 7)
Wait for ambient temperature to
drop. (See page 17)
Replace NL25-C3 Compressor
Driver (see page 16)
Contact a National Luna service
agent for a probe replacement.
National Luna Trailboss Series Fridge Manual
Page 15