RO81 - Universal Supco Refrigerator Relay & Overload

RO81 – Universal Supco Refrigerator Relay & Overload

The RO81 is a Universal OEM-grade replacement relay and overload combination designed for refrigerator compressor starting systems. The RO81 Supco Refrigerator Relay Overload is a compact, pre-wired start device used in domestic and light commercial refrigerators to ensure safe compressor startup and protection against electrical overload conditions.

This component is commonly used in Whirlpool, GE, Frigidaire, Kenmore, and other major refrigerator brands (compatibility depends on compressor specifications, not brand alone). Available in Canada with fast shipping through Appliance Kingdom, Edmonton, AB, this part is a reliable solution for restoring compressor startup performance.

What the RO81 Relay & Overload Does (Refrigerator Category)

The RO81 is part of the refrigerator’s compressor starting system, which controls how the compressor powers on and protects it during startup.

It performs two critical functions:

• Start Relay Function: Helps the compressor motor initiate startup by energizing the start winding

• Overload Protection: Shuts down power if the compressor draws excessive current or overheats

By combining both functions into a single unit, the RO81 ensures smoother compressor operation and reduces the risk of electrical damage.

Using a properly rated universal relay/overload is essential because incorrect sizing can lead to:

• Compressor failure

• Repeated clicking or startup failure

• Overheating of electrical components

• Reduced refrigerator cooling efficiency

Common Symptoms of a Failed Relay & Overload

A failing refrigerator start relay or overload often causes clear and frustrating cooling issues:

• Refrigerator not cooling or cooling intermittently

• Clicking sound every few minutes from the compressor area

• Compressor attempts to start but shuts off quickly

• Compressor becomes hot or shuts down repeatedly

• Refrigerator runs but does not reach set temperature

• No compressor activity even though lights and fans work

If your refrigerator shows these symptoms, replacing the relay/overload assembly like the RO81 often restores normal compressor startup.

Compatibility Guidance (Important)

The RO81 is designed for refrigerator compressors rated approximately 1/12 to 1/5 HP (115V systems).

Before ordering:

• Always verify your refrigerator compressor HP rating and electrical specifications

• Match the relay/overload rating to your compressor, not just the refrigerator brand

• Confirm terminal type (push-on or pin-style depending on compressor connection)

If unsure, Appliance Kingdom can help confirm correct fitment before purchase.

Key Features & Benefits

• Universal relay + overload combination in one unit

• Designed for refrigerator compressor start systems

• Built-in overload protection for motor safety

• Helps prevent compressor burnout and overheating

• Compatible with many domestic refrigerator models

• Compact design with quick installation layout

• Suitable for repair technicians and experienced DIY users

• Reliable OEM-grade Supco engineering

Installation Overview

Installing the RO81 relay and overload is typically considered a moderate-level refrigerator repair.

General steps include:

• Disconnect refrigerator power supply

• Access compressor compartment at rear bottom

• Remove old relay/overload assembly

• Match terminal connections carefully (common, start, run)

• Install RO81 securely onto compressor terminals

• Restore power and test compressor startup cycle

Because incorrect wiring can damage the compressor, professional installation is recommended if you are not experienced with refrigeration electrical systems.

Canada-Wide Availability & Supplier Trust

This part is available through Appliance Kingdom (Edmonton, AB) and ships across Canada.

Appliance Kingdom supplies:

• Genuine OEM and high-quality replacement appliance parts

• Support for homeowners, landlords, and appliance technicians

• Fast Canada-wide delivery

• Reliable sourcing for refrigeration repair components

Buyer Confidence & Assurance

When purchasing the RO81 from Appliance Kingdom, you get:

• Trusted Supco universal replacement quality

• Reliable compressor protection performance

• Compatibility support before purchase

• Canada-based shipping and customer service

• Suitable for professional and residential appliance repair