Norcold NR751 Series User Manual

Refrigerator Service Manual / Manuel d'entretien du réfrigérateur / Manual de servicio del refrigerador
14
NR740, 751 Models / Modèles NR740, 751 / Modelos NR740, 751
Problem Possible Cause Action to Take
Not Cooling, Not
Turning On
■ Faulty thermostat
■ Power to control module
■ Broken wire from module to compressor
■ Faulty control module
■ Faulty compressor
Perform Test F
Refrigerator Gets Too Cold ■ Bad capillary tube position
■ Faulty thermostat
■ Faulty control module
Perform Test G
Refrigerator Builds Frost Inside ■ Door not closed
■ Damaged door gasket
Perform Test H
Runs But Does Not Cool Properly ■ High ambient temperatures
■ Blocked air ventilation
■ Frost build up
■ Condenser coil restricted
■ Faulty condenser fan
■ Faulty cooling unit
Perform Test I
Diagnostic Symptom Chart
Flashes Description Action to Take
1 Battery Protection Cut-Out.
■ The voltage is outside the cut out setting
Perform Test A
2 Fan Over current Cut-Out.
■ The fan electrical load exceeds more than 1.0 amp
Perform Test B
3 Motor Start Error.
■ The rotor is blocked or the differential pressure in the
refrigeration system is too high ( >5 bar)
Perform Test C
4 Minimum Motor Speed Error.
■ If the refrigeration system is too heavily loaded, the
motor can not maintain minimum speed (1850)
Perform Test D
5 Thermal Cutout of Electronic Unit.
■ If the refrigeration system has been too heavily loaded
or the ambient temperature is high, the electronic unit
will run too hot
Perform Test E
Self-Test Diagnostic Chart

Norcold NR751 Series Specifications

General

Brand	Norcold
Model	NR751 Series
Category	Refrigerator
Language	English