Norcold Polar N8X User Manual

SERVICE MANUAL
3
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Figures
Fig. 1 - Double-wrenching gas fittings ...........................................................5
Fig. 2 - Cooling unit bar code label location. ................................................. 6
Fig. 3 - Refrigerator information label location .............................................6
Fig. 4 - Exploded front view .........................................................................8
Fig. 5 - Exploded rear view ..........................................................................9
Fig. 6 - Typical roof exhaust venting ......................................................... 11
Fig. 7 - Fuse locations .................................................................................12
Fig. 8 - Fan wiring .......................................................................................12
Fig. 9 - Burner tube location .......................................................................14
Fig. 10 - Openings of the burner tube .........................................................14
Fig. 11 - N7V and N8V user interface (control) locations ............................ 15
Fig. 12 - Change mode and temperature setting ........................................15
Fig. 13 - Example fault code flash pattern ..................................................17
Fig. 14 - N7X and N8X user interface (control) locations ............................ 26
Fig. 15 - N7LX and N8LX user interface (control locations ......................... 37
Fig. 16 - Wiring diagram .............................................................................55
Fig. 17 - Wiring pictorial ..............................................................................56
Fig. 18 - Fan only wiring ..............................................................................57
Fig. 19 - Cold weather heater only wiring ...................................................57
Fig. 20 - Fan and cold weather heater wiring ..............................................58
Fig. 21 - Ice maker only wiring ....................................................................58
Fig. 22 - Ice maker and fan wiring ...............................................................59
Fig. 23 - Ice maker, fan, and cold weather heater wiring ............................59
TROUBLESHOOTING FLOWCHARTS - N7LX AND N8LX
MODELS ....................................................................................40
Fault Code - “no” “FL” with audible alarm .....................................................40
Fault Code - “no” “AC” with audible alarm .....................................................42
Fault Code - “AC” “HE” with audible alarm .................................................... 43
Fault Code - “dc” “HE” with audible alarm ..................................................... 44
Fault Code - “AC” “rE” with audible alarm .....................................................44
Fault Code - “dc” “rE” with audible alarm ......................................................44
Fault Code - “Lo” “dc” .................................................................................... 45
Fault Code - “Lo” “dc” with audible alarm ...................................................... 45
Fault Code - “Lo” “dC” with audible alarm .....................................................45
Fault Code - “HI” “dc” with audible alarm ......................................................45
Fault Code - “no” “dt” with audible alarm .......................................................46
Fault Code - “Sr” with audible alarm .............................................................47
Fault Code - “oP” “LI” with audible alarm ......................................................47
Fault Code - “FL” “- -” with audible alarm ......................................................47
Fault Code - Flashing Temperature Setting ..................................................48
Blank Display ................................................................................................49
DIAGNOSTIC MODE - N7LX AND N8LX MODELS .................50
General Diagnostic Information .....................................................................50
Access Diagnostic Mode ............................................................................... 50
Change Screens ...........................................................................................50
Exit Diagnostic Mode ....................................................................................50
Screens and Diagnostic Segments Information ............................................50
SCREEN 1: All Diagnostic Icons ON ..........................................................50
SCREEN 2: All Diagnostic Icons OFF .........................................................50
SCREEN 3: Fresh Food Fin Temperature ..................................................50
SCREEN 4: Stored Fault History ................................................................51
SCREEN 5. Stored Fault History ................................................................51
SCREEN 6. Erasing Fault History ............................................................... 51
SCREEN 7. Power Board Inputs ................................................................51
SCREEN 8. Power Board Outputs ..............................................................52
SCREEN 9. Power Board DC Input Voltage Status .................................... 52
SCREEN 0. Power Board AC Input Voltage Status ....................................52
SCREEN A. ................................................................................................. 52
SCREEN B. .................................................................................................52
Cooling System Diagnostic Flowchart ...........................................................53
WIRING SCHEMATIC ................................................................55
ICE MAKER* ............................................................................................... 55
WIRING PICTORIAL .................................................................. 56
AUXILIARY WIRING CIRCUITS ................................................57
Fan Only ........................................................................................................57
Cold Weather Heater Only ............................................................................57
Fan and Cold Weather Heater ......................................................................58
Ice Maker Only ..............................................................................................58
Ice Maker and Fan ........................................................................................59
Ice Maker, Fan, and Cold Weather Heater ....................................................59
ICE MAKER ...............................................................................60
REMOVE / REPLACE THE REFRIGERATOR ..........................60
Remove the Refrigerator ............................................................................... 60
Replace the Refrigerator ...............................................................................60
Conduct Leak Test ........................................................................................60

Norcold Polar N8X Specifications

General

Brand	Norcold
Model	Polar N8X
Category	Refrigerator
Language	English