Norcold N10DCX Service Manual Download Page 8

DIAGNOSTICS

Diagnostic Pre-Checks

Diagnosing problems begins by starting with the basics. In many 
cases, the problem can be solved by verifying the unit is operating 
in acceptable conditions. Before performing detailed diagnostics  
make sure:

 

The refrigerator is turned ON.

 

The door is closed and sealing correctly.

 

The refrigerator is correctly installed and the vents are not 
blocked.

 

The vehicle fuse or circuit breaker is intact.

There may be more than one (1) over-

current device in the refrigerator supply 

circuit. Be sure to check both the RV and 

refrigerator.

 

The ambient temperature is not unusually high (more than 110° 
F. / 43° C.).

 

The air circulation inside the refrigerator is not decreased by 
foods or by shelves that are covered with plastic, paper, etc.

 

The freezer is defrosted.

Then do the following procedure.

NOTICE

Refer to “Diagnostic Symptom Chart.”

Do the tests in “Self - Test
Diagnostics” section.

Are any

error codes

found?

YES

Refer to “Self - Test Diagnostic Chart.” 

NO

If necessary, remove the 
refrigerator from the enclosure.
Refer to the “Refrigerator Enclosure” 
section.

NOR000832B

8

www.norcold.com                                                

N8DCX, N10DCX Models

Summary of Contents for N10DCX

Page 1: ...obtenir de l aide ou d autres renseignements contactez un installateur qualifi un service de r paration ou le fournisseur de gaz ATTENTION WARNING ATTENTION AVERTISSEMENT ATTENTION ADVERTENCIA ATTENTI...

Page 2: ...enance work done by your dealer or by an authorized Norcold Service Center CAUTION ATTENTION WARNING ATTENTION WARNING FIGURES Fig 1 Refrigerator information label location 4 Fig 2 Front view 5 Fig 3...

Page 3: ...e use of unauthorized aftermarket or generic replacement parts voids the refrigerator s limited warranty coverage Technical Assistance If unable to resolve technical issues using the information provi...

Page 4: ...rements DC Power Supply In Line Fuse 15 A DC Resistance Amperage Ratings Exterior Cooling Fan 0 18A Interior Fan 09A Interior Light 13A Off level Operating Limits Side to side 10 degrees maximum at re...

Page 5: ...nel B Control Panel Label C Control Board D Control Housing E Control Housing Bracket 3x F Fan and Housing G Light Housing H Light I Light Cover J Door Light Switch Exploded Views A B D I J E F G H C...

Page 6: ...Fig 3 Rear view No Description A Exterior Fan Vent B Exterior Fan C Drip Cup D Control Module Exploded Views cont d 6 www norcold com N8DCX N10DCX Models C B D A NOR000948A...

Page 7: ...ke sure Ventilation is adequate Refer to Ventilation section Electrical components are installed and operating in a safe condition Refrigerator is installed on a solid and level floor not on carpet an...

Page 8: ...over current device in the refrigerator supply circuit Be sure to check both the RV and refrigerator The ambient temperature is not unusually high more than 110 F 43 C The air circulation inside the r...

Page 9: ...D Wire with connector attached A2 Red LED Wire with connector attached B 1 4 Inch Push On Female Connector 2x C 1 4 Inch Adapter With One 1 Female and Two 2 Male Connections D 12 VDC Input Wire E Posi...

Page 10: ...not run on DC power Blown fuse in DC circuit Undersized wiring to refrigerator minimum 12 gauge wire required Refer to Owner s Manual for recommended wire size Partially discharged battery voltage be...

Page 11: ...he fuse intact NO Replace the fuse Test the refrigerator YES Inspect the fuse on the positive DC Supply that is connected to control module terminal With the refrigerator turned OFF measure voltage at...

Page 12: ...vious page Replace control module Test refrigerator YES With freezer and fresh food compartments at temperature setting 5 measure voltage at terminal NO Repair refrigerator power cord Test the refrige...

Page 13: ...terminal VDC 10 4 15 4 NO Fan has failed Replace the fan YES Remove refrigerator from enclosure but keep DC power supply connected With freezer and fresh food compartments at temperature setting 5 ma...

Page 14: ...s NOR000952A Does code 3 return Replace the refrigerator YES Repair complete NO Turn refrigerator OFF for a minimum of five 5 minutes to allow internal system pressures to equalize Turn refrigerator b...

Page 15: ...e Upper and lower vents are not blocked The refrigerator is not overloaded with hot items The ambient operating temperature is lower than 110 F 43 C YES Is unit overloaded Reduce load on unit YES NO I...

Page 16: ...odule circuit board temperature is lower than 185 F 85 C NOTICE NOR000954A Does code 5 return Replace control module Repair complete NO Remove refrigerator from enclosure but keep DC power supply conn...

Page 17: ...cator light should come on Does light come on YES NO Is unit connected to DC power YES NO Examine DC fuse Replace if necessary With the refrigerator turned OFF use a DVOM to check input voltage The in...

Page 18: ...control module base Remove compressor interface cover Unplug compressor wire harness at each end Check continuity of compressor wire harness Is compressor wire harness OK YES NO Replace compressor wi...

Page 19: ...et valve connected the control board NO YES Did unit stop operating Replace the thermistor YES Are thermistors connected Disconnect wires at control module terminals C and T Did unit stop operating Re...

Page 20: ...excessive amount of frost or it is building quickly perform the following tests NOTICE Troubleshooting Symptoms cont d 20 www norcold com N8DCX N10DCX Models NOR000957B NO Check temperature setting o...

Page 21: ...n Is it restricted Remove restriction Clean as needed YES Remove refrigerator from enclosure but keep DC power supply connected Check for 12 VDC at terminal on the control module NO Is voltage correct...

Page 22: ...wiring to the refrigerator is at least 12 gauge wire required NO Is wiring at least 12 gauge Refer to the Installation Manual for the recommended wire size YES Check DC voltage at control module NO I...

Page 23: ...d with hot items The ambient operating temperature is lower than 110 F 43 C Measure input voltage 12 VDC nominal inout voltage is 10 4 15 4 VDC YES Is unit overloaded Reduce load on unit YES NO Discon...

Page 24: ...omplete the Diagnostic Pre Checks Is thermistor wire connected Correct connection NO YES Check connection of thermistor wire to the refrigerator electronic controls Refer to the wiring diagram Replace...

Page 25: ...tor wire to thermistor YES Complete the Diagnostic Pre Checks Is thermistor wire connected Correct connection NO YES Check connection of thermistor wire to the refrigerator electronic controls Refer t...

Page 26: ...is outside the cut out setting Fault Code E4 Make sure the light switch closes when the door closes all of the connections to the refrigerator electronic controls are intact E4 Possible Cause The door...

Page 27: ...r Light I Interior Fan J Interior Light Switch K Magnet Valve Fig 6 Wiring diagram WIRING DIAGRAM SERVICE MANUAL 27 www norcold com F J 2 T 1 2 V G N D G N D M K L C L D F J 1 L E D 1 2 V 1 2 V 1 2 V...

Page 28: ...sonal injury or death 2 Remove the mounting screws from each mounting bracket Pull the refrigerator forward Replace Refrigerator 1 Push refrigerator fully into enclosure Install screw into each mounti...

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