Troubleshooting - Test F, Not Cooling, Not Turning On - Norcold N1090 Series Service Manual

Troubleshooting, cont'd.

Troubleshooting - Test F, Not Cooling, Not Turning On

START
Perform Diagnostic Prechecks.
Have any wires become disconnected
from their terminals?
No
Does green "ON" indicator light
and/or interior light come on
when unit is turned ON??
No. Neither come on.
Is DC fuse intact?
Yes
With the thermostat in the "OFF"
position, use a DVOM to check the
input voltage. Is the voltage within
range?
12 VDC: 10.4 VDC -15.4 VDC
Yes
Polarity Check
Is DC input connected correctly
(Positive lead to "+" terminal and
negative lead to "-" terminal)?
Yes
1) Remove control module and control
module base. 2) Remove compressor
interface cover. 3) Unplug the harness
at each end and check for continuity.
Is the wire functioning?
Yes
With the compressor wiring harness
unplugged from the compressor,
check the three (3) current lead-in pins
on the compressor. Are the values
approximately .37 OHMS?
Yes
Replace power control module.
Test unit.
Modelos N1090/ Modèles N1090/ Modelos N1090
14
Reattach wire(s) and test unit.
Refer to wiring schematic.
Yes
Both come on. Go to Polarity Check
(below).
Yes
Replace fuse. Test unit.
No
Repair input voltage, test unit.
No
Test unit.
No
Replace compressor wiring harness.
Test unit.
No
Replace cooling unit.
Test unit.
No
Possible Cause:
■ Faulty thermostat
■ Power to control module
■ Faulty wire from control module to
compressor
■ Faulty control module
■ Faulty Compressor
NOR000726-6b
Refrigerator Service Manual / Manuel d'entretien du réfrigérateur / Manual de servicio del refrigerador