Norcold 452 User Manual

Norcold Repair Guide
Models 442, 443, 452, 453, 462, 463, 482, 483
Section 3
Table of Contents
Page
3-2 General Information and Specification
3-3 Information About Electrical Connections
3-3 Description of Operation
3-4 Location of Control and Components
3-5 Lighting and Operating Instructions
3-6 High Humidity and Interior Lamp Switch
3-7 Parts Function
3-10 Troubleshooting Procedures
3-10 Refrigerator Will Not Ignite Electrically on Propane
3-12 Refrigerator Does Not Indicate that a Flame has been Established
3-13 Burner Flame Will Not Light or Stay Lit
3-15 Refrigerator Overfreezing
3-15 Refrigerator Will Not Operate or Cool on A/C
3-18 Refrigerator Will Not Operate or Cool on D/C
3-21 Wiring Pictorials
3-23 Wiring Diagrams
3-E1 Information on Earlier Versions
3-W1 Wiring Pictorials for Earlier Versions
3-W3 Wiring Diagrams for Earlier Versions
B101
3-1

Norcold 452 Specifications

General

Power Source	AC/DC
Weight	53 lbs
Width	20 1/2 inches
Height	32 3/4 inches
Depth	21 1/2 inches
AC Voltage	120V AC
DC Voltage	12V DC
Refrigerant	R134a

Summary

General Information and Specifications

Operating Limits for All Models

Details operating voltage and gas pressure limits across all refrigerator models.

Specific Model Ratings

Lists Btu/Hr input and gas/power requirements for specific refrigerator models.

Model Current Draws

Specifies electrical current consumption for different model series.

Electrical Connection Information

120 Volt AC Connection

Explains connection requirements for 120V AC power supply to 400 series.

Refrigerator Operation Overview

12 Volt DC Connection

Component Location and Identification

Single Door Model Components

Two Door Model Components

Lighting and Operating Instructions

Gas Operation Start-Up

AC Electric Start-Up

DC Electric Start-Up (3-Way)

Operation Shut-Down

Key Component Functions

Combination Control Operation

Ignition Switch Function

Component Descriptions

Relighter and Ignition Electrode

Thermocouple and Orifice Function

Component Details

Burner and Heating Elements

AC-DC Mode Selector Switch

Troubleshooting: Propane Ignition Failure

No Propane Ignition

Steps to diagnose why the refrigerator won't ignite on propane.

Troubleshooting: Ignitor Switch and Relighter

Ignitor Switch and Relighter Checks

Steps to check ignitor switch voltage and relighter function.

Troubleshooting: Flame Indicator Issues

No Flame Established Indicator

Diagnosing why the flame indicator does not illuminate when a flame is present.

Troubleshooting: Flame Stability Problems

Flame Blowout Diagnosis

Steps to diagnose why the flame ignites but then goes out.

Troubleshooting: Gas Pressure Checks

Gas Pressure Checks

Procedures for checking and setting gas pressure for burner operation.

Troubleshooting: Refrigerator Overfreezing

Overfreezing Issues

Steps to diagnose and fix refrigerator overfreezing issues.

Troubleshooting: AC Cooling Problems

AC Cooling Problems

Troubleshooting steps for when the refrigerator does not operate or cool on AC.

Troubleshooting: AC-DC Switch Voltage

AC-DC Switch Voltage Verification

Troubleshooting: AC Heater Element

AC Heater Element Testing

Troubleshooting: DC Cooling Problems

DC Cooling Problems

Steps to diagnose why the refrigerator does not operate or cool on DC.

Troubleshooting: DC Switch Voltage

DC Switch and Control Voltage Checks

Troubleshooting: DC Heater Continuity

DC Heater Continuity and Resistance

Earlier Version Information

Earlier Version Switch Operation