Diagnostic Symptom Chart - Norcold N1090 Series Service Manual

LED Flash Codes
One flash 1/4 seconds, pause, repeat.
Two 1/4 second flashes, pause, repeat.
Three 1/4 second flashes, pause, repeat.
Not Applicable
Four 1/4 second flashes, pause, repeat.
Five 1/4 second flashes, pause, repeat.
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Refrigerator Service Manual / Manuel d'entretien du réfrigérateur / Manual de servicio del refrigerador

DIAGNOSTIC SYMPTOM CHART

Possible
Symptoms
BATTERY The voltage is outside the cut out setting.
cuts out
FAN The fan electrical load exceeds more than 1.0 amp.
cuts out
MOTOR The rotor is blocked or the differential pressure in the
will not start refrigeration system is too high ( >5 bar).
MOTOR • Blown fuse in DC circuit
• Undersized wiring to refrigerator, minimum #12
will not run
• Partially discharged battery, voltage below 11.3
• High resistance (voltage drop) in supply circuit
MOTOR If the refrigeration system is too heavily loaded,
will not maintain minimum the motor can not maintain minimum speed (1850
speed rpm).
MOTOR If the refrigeration system has been too heavily load-
periodically cuts out ed or the ambient temperature is high, the electronic
unit will run too hot.
NOT COOLING • Faulty thermostat
• Power to control module
not turning on
• Faulty wire from control module to compressor
• Faulty control module
• Faulty Compressor
NOT COOLING • Bad capillary tube position
• Faulty thermostat
Runs, but does not cool
• Faulty control module
properly
NOT COOLING Overheated due to high ambient temperature
compressor starts but shuts
off directly
NOT COOLING • Battery voltage is too low.
compressor does not run
• Start delay of one (1) minute.
at all
• Overheated due to high ambient temperature.
• Vehicle fuse has blown.
NOT COOLING Ventilation openings are completely or partially
blocked.
The door is not properly closed.
There is more than 0.12 inch ice on evaporator
Overheated due to high ambient temperature.
NOT COOLING
Compressor runs continu-
ously
Possible Cause
gauge wire required, refer to Installation Manual
VDC at compressor module
Action to Take
Perform Test A. Refer to page
9.
Perform Test B. Refer to page
10.
Perform Test C. Refer to page
11.
Perform Test J. Refer to page 18.
Perform Test D. Refer to page
12.
Perform Test E. Refer to page
13.
Perform Test F. Refer to page 14.
Perform Test I. Refer to page 17.
Turn off refrigerator for one (1)
hour, vent the vehicle, change
refrigerator to day mode.
Recharge the battery.
Wait one (1) minute.
Turn off refrigerator for one (1)
hour, vent the vehicle, change
refrigerator to day mode.
Check fuse rating, replace with
15A fuse.
Clean or remove the blockage
Close the door, make sure the
seals are in good condition.
Defrost the refrigerator, make sure
the seals are in good condition.
Turn off refrigerator for one (1)
hour, vent the vehicle, change
refrigerator to day mode.
Go to a Service Center.
N1090 Models / Modèles N1090 / Modelos N1090
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