Norcold N82X User Manual
i
N6XX/N8XX Models
Refrigerator Service Manual
www.norcold.com/cda
TABLE OF CONTENTS
Introduction ------------------------------------------------------ 1
About this Manual ................................................................. 1
Model Identification ............................................................... 1
Information Label .................................................................. 1
Cooling Unit Serial Number .................................................. 1
Certification and Code Requirements .................................. 1
About Installation .................................................................. 1
Replacement Parts ............................................................... 1
Technical Assistance ............................................................. 1
Model Identification ............................................................... 1
Information Label .................................................................. 1
Cooling Unit Serial Number .................................................. 1
Certification and Code Requirements .................................. 1
About Installation .................................................................. 1
Replacement Parts ............................................................... 1
Technical Assistance ............................................................. 1
Safety Awareness --------------------------------------------- 3
Safety Notice ......................................................................... 3
Attention Statements ............................................................. 3
Safety Statements ................................................................. 3
Attention Statements ............................................................. 3
Safety Statements ................................................................. 3
Specifications --------------------------------------------------- 4
N61X/N81X Models .............................................................. 4
N62X/N82X Models .............................................................. 5
N64X/N64X.3/N84X/N84X.3 Models .................................... 6
N62X/N82X Models .............................................................. 5
N64X/N64X.3/N84X/N84X.3 Models .................................... 6
Troubleshooting – Quick Reference Guide ----------- 7
N61X/N81X Displayed Fault Codes ---------------------- 8
N62X/N82X Displayed Fault Codes ---------------------- 9
N64X/N84X Displayed Fault Codes --------------------- 10
Troubleshooting Flowcharts ------------------------------ 11
Blank Display – Refrigerator does not turn on ................... 11
F/no FL Fault Code – Burner failed to ignite or reignite ..... 12
S/Sr Fault Code – Flame sense circuit failure .................... 13
dc LO Fault Code – Low DC voltage .................................. 13
dc HI Fault Code – DC voltage high ................................... 14
dc rE Fault Code – DC relay stuck closed ......................... 14
dc HE Fault Code – DC heater failed open ........................ 15
A/no AC Fault Code – No AC power available ................... 16
r/AC rE Fault Code – AC relay stuck closed ...................... 16
AC HI Fault Code – AC voltage high .................................. 17
AC LO Fault Code – AC voltage low .................................. 17
H/AC HE Fault Code – AC heater failed open ................... 18
Food Compartment Lamp Switch ....................................... 19
F/no FL Fault Code – Burner failed to ignite or reignite ..... 12
S/Sr Fault Code – Flame sense circuit failure .................... 13
dc LO Fault Code – Low DC voltage .................................. 13
dc HI Fault Code – DC voltage high ................................... 14
dc rE Fault Code – DC relay stuck closed ......................... 14
dc HE Fault Code – DC heater failed open ........................ 15
A/no AC Fault Code – No AC power available ................... 16
r/AC rE Fault Code – AC relay stuck closed ...................... 16
AC HI Fault Code – AC voltage high .................................. 17
AC LO Fault Code – AC voltage low .................................. 17
H/AC HE Fault Code – AC heater failed open ................... 18
Food Compartment Lamp Switch ....................................... 19
Lamp Switch Operation ..................................................... 19
d/dr Fault Code – Door open for more than 2 minutes ...... 19
Lamp Switch Testing Procedure ....................................... 19
Thermistor Failure Fault – Controls in backup operating
system mode ....................................................................... 20
Backup Operating System (BOS) ....................................... 20
system mode ....................................................................... 20
Backup Operating System (BOS) ....................................... 20
N61X/N81X Backup Operation. ........................................ 20
N62X/N82XN64X/N84X Backup Operation ...................... 20
N62X/N82XN64X/N84X Backup Operation ...................... 20
Power Board Resetting Procedure ..................................... 21
n/no co Fault Code – No cooling detected by the controls 21
n/no co Fault Code – No cooling detected by the controls 21
Ventilation ------------------------------------------------------- 22
Roof Exhaust Venting ......................................................... 22
Air Intake Vent ..................................................................... 22
Roof Exhaust Vent .............................................................. 22
Baffles ................................................................................. 23
Air Intake Vent ..................................................................... 22
Roof Exhaust Vent .............................................................. 22
Baffles ................................................................................. 23
Vertical Angled Baffles ...................................................... 23
Double Sidewall Venting ..................................................... 24
Air Intake Vent ................................................................... 24
Sidewall Exhaust Vent ...................................................... 24
Sidewall Exhaust Vent ...................................................... 24
LP Gas System ------------------------------------------------ 27
Pressure Requirements ...................................................... 27
Testing for LP Gas Leaks ................................................... 27
Components ........................................................................ 28
Testing for LP Gas Leaks ................................................... 27
Components ........................................................................ 28
Solenoid Gas Valves ......................................................... 28
New Style Solenoid Gas Valve ......................................... 28
Old Style Solenoid Gas Valve ........................................... 28
Solenoid Gas Valve Connections ..................................... 28
New Style Solenoid Gas Valve ......................................... 28
Old Style Solenoid Gas Valve ........................................... 28
Solenoid Gas Valve Connections ..................................... 28
Orifice ................................................................................ 29
Burner ................................................................................ 29
Burner Tube ...................................................................... 29
Flue ................................................................................... 30
Heat Deflector ................................................................... 30
Flue Baffle ......................................................................... 30
Burner ................................................................................ 29
Burner Tube ...................................................................... 29
Flue ................................................................................... 30
Heat Deflector ................................................................... 30
Flue Baffle ......................................................................... 30
Flame Appearance .............................................................. 30
Burner Cleaning Procedure ................................................ 31
Burner Cleaning Procedure ................................................ 31
Electrical Requirements and Components ----------- 33
DC Voltage Requirements and Polarity .............................. 33
Power Board DC Fuse ...................................................... 33
DC Power Wiring Requirements ......................................... 33
2-Way Models ................................................................... 33
3-Way Models ................................................................... 33
3-Way Models ................................................................... 33
AC/DC Converter as Power Source ................................... 33
DC Heater–3-Way Refrigerators Only .............................. 33
DC Heater Circuit Fuse ..................................................... 33
Lamp Assembly ................................................................. 34
Divider Heater ................................................................... 34
AC Heater ......................................................................... 34
DC Heater Circuit Fuse ..................................................... 33
Lamp Assembly ................................................................. 34
Divider Heater ................................................................... 34
AC Heater ......................................................................... 34
AC Power Requirements .................................................... 34
AC Heater Fuse ................................................................ 34
AC Power Cord ................................................................. 35
Power Cord for Ice Maker Units ........................................ 35
AC Power Cord ................................................................. 35
Power Cord for Ice Maker Units ........................................ 35
12 Vdc Ventilation Fan ........................................................ 35
Cooling Unit ---------------------------------------------------- 37
Description .......................................................................... 37
Heat Absorption ................................................................ 37
Leveled Operation ............................................................. 37
Leveled Operation ............................................................. 37
Gradual Decrease in Cooling Efficiency ............................. 37
Cooling System Monitoring ................................................. 37
Cooling System Monitoring ................................................. 37
First "No Cooling" Fault Occurrence ................................. 37
Two Recorded "No Cooling" Fault Occurrences .............. 37
Two Recorded "No Cooling" Fault Occurrences .............. 37
Troubleshooting Cooling Faults .......................................... 38
Poor or No Cooling on AC Mode ...................................... 38
Poor or No Cooling on LP Gas Mode ............................... 38
Poor or No Cooling on DC Mode – 3-Way Models ........... 38
Poor or No Cooling on LP Gas Mode ............................... 38
Poor or No Cooling on DC Mode – 3-Way Models ........... 38
Refrigerant Leakage ........................................................... 38
Disposal of Cooling Unit ..................................................... 38
Cooling System Diagnostic Flowchart ................................ 39
Replacing the Cooling Unit ................................................. 41
Disposal of Cooling Unit ..................................................... 38
Cooling System Diagnostic Flowchart ................................ 39
Replacing the Cooling Unit ................................................. 41
Removing the Refrigerator from the Enclosure ................ 41
Removal of Cooling Unit ................................................... 42
Installation of Replacement Cooling Unit ........................ 42
Reinstallation of Refrigerator into Enclosure .................... 44
Removal of Cooling Unit ................................................... 42
Installation of Replacement Cooling Unit ........................ 42
Reinstallation of Refrigerator into Enclosure .................... 44
Electronic Components ------------------------------------ 45
Power Board ....................................................................... 45
Removal–Power Board ..................................................... 45
Installation–Power Board .................................................. 46
Installation–Power Board .................................................. 46
Optical Control Assembly ................................................... 46
N61X/N81X Wiring Schematic ............................................ 47
N61X/N81X Wiring Pictorial ................................................ 47
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Pictorial –
Units with serial number 851759 and higher ..................... 48
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Schematic –
Units with serial number 851759 and higher ..................... 48
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Pictorial –
Units with serial number lower than 851759 ...................... 49
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Schematic –
Units with serial number lower than 851759 ...................... 50
N61X/N81X Wiring Schematic ............................................ 47
N61X/N81X Wiring Pictorial ................................................ 47
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Pictorial –
Units with serial number 851759 and higher ..................... 48
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Schematic –
Units with serial number 851759 and higher ..................... 48
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Pictorial –
Units with serial number lower than 851759 ...................... 49
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Schematic –
Units with serial number lower than 851759 ...................... 50
Controls ---------------------------------------------------------- 51
N61X/N81X Optical Control Assembly ............................... 51
Front Box ........................................................................... 51
Removal and Installation of Optical Control Assembly. .... 51
Removal and Installation of Optical Control Assembly. .... 51
Modes of Operation ............................................................ 52