N61X/N81X
N62X/N82X
N64X/N84X
N64XIM/N84XIM
N64X.3/N84X.3
WARNING
DO NOT install this refrigerator in below deck marine applications. Do not install this refrigerator in fixed indoor cabin or other dwelling applications.
This refrigerator must use only NORCOLD designed and approved outside air in take and exhaust ventilation for correct and safe operation. Any other ventilation could cause lethal combustion exhaust fumes and or/explosive propane gas fumes to be in the living area and/or below deck.
Table of Contents
Introduction
About this Manual
Model Identification
Information Label
Cooling Unit Serial Number
Certification and Code Requirements
About Installation
Replacement Parts
Technical Assistance
Safety Awareness
Safety Notice
Attention Statements
Safety Statements
Specifications
N61X/N81X Models
N62X/N82X Models
N64X/N64X.3/N84X/N84X.3 Models
Troubleshooting – Quick Reference Guide
N61X/N81X Displayed Fault Codes
N62X/N82X Displayed Fault Codes
N64X/N84X Displayed Fault Codes
Troubleshooting Flowcharts
Blank Display – Refrigerator does not turn on
F/no FL Fault Code – Burner failed to ignite or reignite
S/Sr Fault Code – Flame sense circuit failure
dc LO Fault Code – Low DC voltage
dc HI Fault Code – DC voltage high
dc rE Fault Code – DC relay stuck closed
dc HE Fault Code – DC heater failed open
A/no AC Fault Code – No AC power available
r/AC rE Fault Code – AC relay stuck closed
AC HI Fault Code – AC voltage high
AC LO Fault Code – AC voltage low
H/AC HE Fault Code – AC heater failed open
Food Compartment Lamp Switch
Lamp Switch Operation
d/dr Fault Code – Door open for more than 2 minutes
Lamp Switch Testing Procedure
Thermistor Failure Fault – Controls in backup operating system mode
Backup Operating System (BOS)
N61X/N81X Backup Operation
N62X/N82XN64X/N84X Backup Operation
Power Board Resetting Procedure
n/no co Fault Code – No cooling detected by the controls
Ventilation
Roof Exhaust Venting
Air Intake Vent
Roof Exhaust Vent
Baffles
Vertical Angled Baffles
Double Sidewall Venting
Air Intake Vent
Sidewall Exhaust Vent
LP Gas System
Pressure Requirements
Testing for LP Gas Leaks
Components
Solenoid Gas Valves
New Style Solenoid Gas Valve
Old Style Solenoid Gas Valve
Solenoid Gas Valve Connections
Orifice
Burner
Burner Tube
Flue
Heat Deflector
Flue Baffle
Flame Appearance
Burner Cleaning Procedure
Electrical Requirements and Components
DC Voltage Requirements and Polarity
Power Board DC Fuse
DC Power Wiring Requirements
2-Way Models
3-Way Models
AC/DC Converter as Power Source
DC Heater–3-Way Refrigerators Only
DC Heater Circuit Fuse
Lamp Assembly
Divider Heater
AC Heater
AC Power Requirements
AC Heater Fuse
AC Power Cord
Power Cord for Ice Maker Units
12 Vdc Ventilation Fan
Cooling Unit
Description
Heat Absorption
Leveled Operation
Gradual Decrease in Cooling Efficiency
Cooling System Monitoring
First "No Cooling" Fault Occurrence
Two Recorded "No Cooling" Fault Occurrences
Troubleshooting Cooling Faults
Poor or No Cooling on AC Mode
Poor or No Cooling on LP Gas Mode
Poor or No Cooling on DC Mode – 3-Way Models
Refrigerant Leakage
Disposal of Cooling Unit
Cooling System Diagnostic Flowchart
Replacing the Cooling Unit
Removing the Refrigerator from the Enclosure
Removal of Cooling Unit
Installation of Replacement Cooling Unit
Reinstallation of Refrigerator into Enclosure
Electronic Components
Power Board
Removal–Power Board
Installation–Power Board
Optical Control Assembly
N61X/N81X Wiring Schematic
N61X/N81X Wiring Pictorial
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Pictorial Units with serial number 851759 and higher
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Schematic Units with serial number 851759 and higher
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Pictorial Units with serial number lower than 851759
N62X/N82X/N64X/N84X/N64X.3/N84X.3 Wiring Schematic Units with serial number lower than 851759
Controls
N61X/N81X Optical Control Assembly
Front Box
Removal and Installation of Optical Control Assembly
Modes of Operation
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