Troubleshooting Flowcharts; Blank Display - Refrigerator Does Not Turn On - Norcold N61X Service Manual

Blank Display – Refrigerator does not turn on
Before beginning this procedure make sure:
The RV DC power system is supplying 10.5 to 15.4 volts to the refrigerator.
I
No other RV appliances or lighting circuits are connected to the refrigerator DC circuit.
I
12 Vdc input to the power board is wired according to the N6XX/N8XX installation manual.
I
Models and fault indicator displayed.
ON
GAS check if flashing
N61X/N81X
Measure voltage at power
board 12VDC and GND1
.
connections
Check condition of F1 fuse
in power board. See Figure A.
Measure voltage at optical
control harness.
See Figure B.
Good= 00.0 Ω
Bad = OL
00.0
Checking DC fuse continuity.
Figure A.
Refrigerator Service Manual

TROUBLESHOOTING FLOWCHARTS

AC LP GAS
Blank
Display
AUTO
Screen
N62X/N82X
10.5
NO
1. No DC power input from RV to unit.
to
2. Faulty wiring or connectors.
15.4 Vdc?
YES
NO
Replace fuse. Use a standard 5 amp
F1 fuse okay?
(tan color) automotive blade type fuse.
YES
NO
Voltage
present?
YES
Wire harness optical
control display connector
Optical control display wire harness connection voltage measuring points.
Figure B.
www.norcold.com/cda
Blank
Display
Screen
N64X/N84X
Replace power board.
Replace optical control board.
White/violet wire
White/red wire
V
N6XX/N8XX Models
10.5 to 15.4 Vdc
87 III TRUE RMS MULTI METER
V
MIN MAX HOLD H
RANGE
REL Hz
4 1/2 DIGITS PEAK MIN MAX
1 Seconds
mV
mA
V A
V µA
OFF
A mA µA COM V
!
400mA MAX CAT II
FUSED
10A MAX 1000V MAX
!
FUSED
11