Norcold Polar N8V User Manual

© 2017 NORCOLD, INC. All rights reserved.
Part No. 639410 Rev. A 04.17.2018
Service Manual
Gas Electric Refrigerators
Questions? 1-800-444-7210
Improper installation, adjustment, altera-
tion, service or maintenance can cause
personal injury or property damage. Refer
to this manual. For assistance or addition-
al information, contact a qualied installer,
service agency, or the gas supplier.
Polar 7 Series (N7V, N7X, N7LX) Models
Polar 8 Series (N8V, N8X, N8LX) Models

Norcold Polar N8V Specifications

General

Type	Absorption Refrigerator
Power Source	AC/LP Gas
AC Voltage	120V
DC Voltage	12V
Refrigerant	Ammonia
Capacity	8 cu ft
Width	24"
Height	32 1/2"
Depth	24 inches
Color	Black

Summary

Safety Precautions for Norcold Refrigerators

General Safety Guidelines

Hazard Warnings and Signals

Fault Codes for N7V and N8V Models

Fault Code Flash Patterns Overview

How fault codes are displayed using flash patterns on the indicator light.

Fault Code Meanings and Actions

Table listing fault codes, their meanings, and suggested troubleshooting actions.

Troubleshooting Flowcharts for N7V and N8V Models

Solid Red Indicator Light Troubleshooting

Flowchart for diagnosing a solid red indicator light fault.

Flash Pattern 1: AC Heater Fault

Troubleshooting steps for AC heater faults indicated by flash pattern 1.

Flash Pattern 2: Internal Control Fault

Troubleshooting steps for internal control faults indicated by flash pattern 2.

Flash Pattern 3: Limit Circuit Fault

Troubleshooting steps for limit circuit faults indicated by flash pattern 3.

Flash Pattern 4: AC Heater Relay Fault

Troubleshooting steps for AC heater relay faults indicated by flash pattern 4.

Flash Pattern 5: Gas Valve Stuck Open

Troubleshooting steps for gas valve stuck open indicated by flash pattern 5.

Flash Pattern 8: Low DC Voltage

Troubleshooting steps for low DC input voltage indicated by flash pattern 8.

Flash Pattern 9: High DC Voltage

Troubleshooting steps for high DC input voltage indicated by flash pattern 9.

Flash Pattern 10: Communication Loss

Troubleshooting steps for communication loss indicated by flash pattern 10.

Thermistor Fault Troubleshooting

Troubleshooting thermistor faults and checking resistance values.

Blank Display Troubleshooting

Flowchart for diagnosing a blank display indicating no power.

Fault Codes for N7X and N8X Models

N7X/N8X Fault Code Flash Patterns Overview

How fault codes are displayed using flash patterns on the indicator light.

Troubleshooting Flowcharts for N7X and N8X Models

Solid Red Indicator Light Troubleshooting (N7X/N8X)

Flowchart for diagnosing a solid red indicator light fault.

Flash Pattern 1 Troubleshooting (N7X/N8X)

Troubleshooting steps for AC heater faults indicated by flash pattern 1.

Flash Pattern 2 Troubleshooting (N7X/N8X)

Troubleshooting steps for internal control faults indicated by flash pattern 2.

Flash Pattern 3 Troubleshooting (N7X/N8X)

Troubleshooting steps for limit circuit faults indicated by flash pattern 3.

Flash Pattern 4 Troubleshooting (N7X/N8X)

Troubleshooting steps for AC heater relay faults indicated by flash pattern 4.

Flash Pattern 5 Troubleshooting (N7X/N8X)

Flash Pattern 8 Troubleshooting (N7X/N8X)

Flash Pattern 9 Troubleshooting (N7X/N8X)

Flash Pattern 10 Troubleshooting (N7X/N8X)

Thermistor Fault Troubleshooting (N7X/N8X)

Troubleshooting thermistor faults and checking resistance values.

Blank Display Troubleshooting (N7X/N8X)

Flowchart for diagnosing a blank display indicating no power.

Fault Codes for N7LX and N8LX Models

N7LX/N8LX Fault Code Reference Table

Table listing fault codes, meanings, and suggested actions for N7LX/N8LX.

Troubleshooting Flowcharts for N7LX and N8LX Models

Fault Code 'no' 'FL' Troubleshooting

Fault Code 'no' 'AC' Troubleshooting

Fault Code 'AC' 'HE' Troubleshooting

Fault Code 'dc' 'HE' Troubleshooting

Fault Code 'AC' 'rE' Troubleshooting

Fault Code 'dc' 'rE' Troubleshooting

Fault Code 'Lo' 'dc' Troubleshooting

Fault Code 'HI' 'dc' Troubleshooting

Fault Code 'no' 'dt' Troubleshooting

Fault Code 'Sr' and 'oP'/'LI' Troubleshooting

Fault Code 'FL'/'--' Troubleshooting

Flashing Temperature Setting Troubleshooting

Troubleshooting for flashing temperature setting indicator.

Blank Display Troubleshooting (N7LX/N8LX)

Flowchart for diagnosing a blank display.

Diagnostic Mode for N7LX and N8LX Models

Stored Fault History and Erasing

Power Board Input/Output and Voltage Status

Cooling System Diagnostic Flowchart

Cooling System Diagnostics and Checks

Cooling Unit Performance Testing

Wiring Schematic and Component Identification

Wiring Schematic Diagram

Wiring Pictorial and Ice Maker Connections

Wiring Pictorial Diagram