Norcold N109X Series User Manual

N109X Models
Refrigerator Service Manual
INTRODUCTION ........................................................... 3
About this Manual ............................................................... 3
Model Identication and Information Label ......................... 3
Cooling Unit Serial Number ................................................ 3
Certication and Code Requirements ................................. 3
About Installation ................................................................ 3
Replacement Parts ............................................................. 3
Technical Assistance ........................................................... 3
SAFETY AWARENESS................................................. 4
Safety Notice ....................................................................... 4
Attention & Safety Statements ............................................ 4
SPECIFICATIONS ......................................................... 5
TROUBLESHOOTING – QUICK REFERENCE GUIDE .... 6
N109X DISPLAYED FAULT CODES ............................ 7
TROUBLESHOOTING FLOWCHARTS ....................... 8
Blank Display – Refrigerator does not turn on .................... 8
no FL Fault Code – Burner failed to ignite or reignite ......... 9
Sr Fault Code – Flame sense circuit failure ...................... 10
dc LO Fault Code – Low dc voltage .................................. 10
dc HI Fault Code – DC voltage high ..................................11
dc rE Fault Code – DC relay stuck closed .........................11
no AC Fault Code – No AC power available ..................... 12
AC rE Fault Code – AC relay stuck closed ....................... 12
AC LO Fault Code – AC voltage low ................................. 13
AC HI Fault Code – AC voltage high ................................. 13
AC HE Fault Code – AC heater failed open ...................... 14
dr Fault Code – Door open for more than 2 minutes ........ 15
Lamp Switch Operation .................................. 15
Lamp Switch Testing Procedure ....................................... 15
N109X Backup Operation ............................... 16
Thermistor Failure Fault – Controls in Backup Operating
System mode .................................................................... 16
Backup Operating System (BOS) ..................................... 16
no co Fault Code – No cooling detected by the controls ......17
Power Board Resetting Procedure ................................... 17
VENTILATION ............................................................. 18
Roof Exhaust Venting ....................................................... 18
Air Intake Vent ................................................................... 18
Roof Exhaust Vent ............................................................ 18
Bafes ............................................................................... 19
Double Sidewall Venting ................................................... 20
LP GAS SYSTEM ....................................................... 23
Pressure Requirements .................................................... 23
Testing for LP Gas Leaks .................................................. 23
Components ...................................................................... 24
Solenoid Gas Valve & Connections .............. 24
Orice ............................................................... 24
Burner & Burner Tube .................................... 24
Flue & Flue Bafe ............................................ 25
Heat Deector .................................................. 25
Flame Appearance ............................................................ 25
Burner Cleaning Procedure .............................................. 26
ELECTRICAL REQUIREMENTS AND COMPONENTS 28
DC Voltage Requirements and Polarity ............................ 28
Power Board DC Fuse .................................... 28
DC Power Wiring Requirements ....................................... 28
AC/DC Converter as Power Source .................................. 28
Lamp Assembly ............................................... 28
Divider Heater .................................................. 28
AC Power Requirements .................................................. 29
AC Heater & AC Heater Circuit Fuse ............. 29
Power Board AC Power Cord ......................... 29
TABLE OF CONTENTS
2
Ice Maker AC Power Cord .............................. 30
12 Vdc Ventilation Fan ...................................................... 30
COOLING UNIT .......................................................... 31
Description ........................................................................ 31
Heat Absorption .............................................. 31
Leveled Operation .......................................... 31
Gradual Decrease in Cooling Efciency ........................... 31
Cooling Performance Monitoring Control ......................... 31
Resetting the Power Board ............................ 32
Cooling Unit Monitoring Control Operation . 32
"no co" Fault Code ......................................... 32
Cooling Unit Vertical Bafe ............................................... 32
Refrigerant Leakage ......................................................... 32
Disposal of Cooling Unit .................................................... 32
Cooling System Diagnostic Flowchart .............................. 33
Replacing the Cooling Unit ............................................... 35
Removing the Refrigerator from the Enclosure ... 35
Removal of Cooling Unit ................................ 36
Installation of Replacement Cooling Unit ..... 36
Reinstallation of Refrigerator into Enclosure ... 39
ELECTRONIC COMPONENTS .................................. 39
Power Board Removal & Installation ......................... 40
CONTROLS ................................................................ 41
N109X Optical Control Assembly ...................................... 41
Front Box ......................................................... 41
Optical Control Assy Removal & Installation ... 41
Modes of Operation .......................................................... 42
AUTO AC Operation & AUTO LP Operation .... 42
Shift from AUTO LP GAS to AUTO AC .......... 42
No AC Power and No Flame ........................... 42
Troubleshooting No Flame and No AC Faults 42
AC Manual Mode .............................................................. 43
No AC Power or Loss of AC Power ............... 43
AC Power Restored ........................................ 43
Troubleshooting "no AC" Fault .................... 43
LP Manual Mode ............................................................... 43
Flame Fails to Ignite or Flame Goes Out ...... 43
DIAGNOSTIC MODE ................................................. 44
Accessing & exiting Diagnostic Mode ............................... 44
Changing Screens ............................................................ 44
Screens and Diagnostic Segments Information ................ 45
WIRING PICTORIALS AND DIAGRAMS ................... 47
ICE MAKER COMPONENTS AND SERVICE ............ 49
Specications .................................................................... 49
Wire Harness .................................................................... 49
Water Fill Tube & Line ....................................................... 50
12 Vdc Water Line Heater ................................................. 50
Water Valve Replacement Procedure ............................... 51
Water Valve Service .......................................................... 52
Ice Maker Troubleshooting Chart ...................................... 52
Replacing Ice Maker ......................................................... 53
Cycle Testing Ice Maker .................................................... 54
Checking Water Valve Operation ...................................... 54
Water Fill Adjustment ........................................................ 54
Checking Water Valve Solenoid Resistance ..................... 55
Checking Mold Heater Resistance .................................... 55
Checking Voltage to Motor ................................................ 55
Winterization ..................................................................... 55

Norcold N109X Series Specifications

General

Brand	Norcold
Model	N109X Series
Category	Refrigerator
Language	English