High-quality circuit boards play a pivotal role in maintaining reliable cooling performance and energy efficiency. This guide highlights five dependable replacement options for common air conditioner control boards, focusing on compatibility, installation ease, and long-term reliability. Each product listed below is designed to support various models and improve system response, from thermostat control to relay board upgrades. Read on to compare features and determine which board best fits your unit’s needs.
| Product | Brand | Key Features | Compatibility Notes |
|---|---|---|---|
| AYQWETBJ Compatible Board | AYQWETBJ | High-quality replacement; easy installation; supports KFR-35W series | Midea KFR-35W / KFR-35W/BP3N1 |
| 3106996022 Heat & Cool Relay Board | FONGLP | Controls cool/heat; broad Dometic RV compatibility | RV/DUO THERM kits; multiple series replacements |
| Universal AC Control System Board | HVAC YELLOW HAT | Multiple modes; 3 fan speeds; 110V-220V universal | General universal compatibility |
| Premium 3106996022 Analog Relay Board | sixcow | Wide compatibility; advanced installation options | Dometic RV 579/590/595/600 series; various kits |
| Intermatic CD1-024R Defender | Intermatic | Surge protection; auto-sense voltage; LED status | Universal 120/208/240 VAC |
The sections below provide concise overviews of each option, including installation context, compatibility considerations, and how they enhance cooling performance. For critical systems, verify exact model numbers and wiring configurations with a professional technician before replacing a control board.
AYQWETBJ Board for Midea

Features include a high-quality replacement circuit board designed specifically for Midea air conditioners, with compatibility for KFR-35W models, including KFR-35W/BP3N1. The board is engineered to restore core cooling functions and support reliable operation, contributing to efficient energy use. Installation typically involves standard wiring checks and re-mounting in the unit’s control compartment, with a focus on maintaining proper signal flow to the compressor, fan, and thermostat interfaces.
New 3106996022 Relay Board for Dometic RV

This heat & cool analog control relay board is designed for Dometic RV air conditioners and related controller kits. It supports a wide range of models and relay kits, including compatibility with multiple 3106996.022, 3311924, and 3106997 series configurations. The board is intended to optimize condenser efficiency via analog control, with installation geared toward compact RV interiors and under-counter spaces, where space-saving design can improve overall airflow and performance.
Universal 110V-220V Control System Board

Designed as a universal control solution, this board supports five working modes, three fan speeds, and a sleep function. It provides accurate and stable temperature control across 110V-220V systems and is suitable for a range of non-OEM replacements. The board emphasizes adaptability for various residential and commercial units, enabling quick retuning of cooling profiles and improved energy efficiency when matched with the right thermostat kit.
Premium 3106996022 Analog Thermostat Board

This analog thermostat control circuit relay board targets Dometic RV installations and partners with various kit configurations. It supports replacements for the OE 3106996.022 and 3311924 parts, with emphasis on compatibility across multiple model series such as 579, 590, 595, and 600. The design prioritizes a clean interface for analog thermostats and is intended to minimize space consumption while maintaining precise temperature regulation.
Intermatic CD1-024R Compressor Defender

The Intermatic CD1-024R Defender provides surge, brownout, and short-cycle protection for central air conditioners and heat pumps, supporting 120, 208, and 240 VAC loads. LED indicators offer real-time status updates for troubleshooting, and the auto-sense voltage technology enables universal input across typical residential electrical environments. This device helps safeguard critical components and can reduce downtime caused by power fluctuations that affect compressors and circuit boards.
ATRACYPART 3106996022 Replacement Board

Note: The ATRACYPART listing indicates a replacement board compatible with the 3106996.022 family for Dometic RV systems, offering similar replacement capabilities to the premium variant. It is designed for users seeking direct replacements that align with the OE numbers and compatible kit configurations, with emphasis on integrated thermostat compatibility and relay performance.
Buying Guide
Key considerations when choosing an air conditioner circuit board replacement include compatibility, installation effort, and reliability. Start by verifying model numbers and kit compatibility to ensure the board interfaces correctly with your unit’s thermostat, relays, and sensors. Consider the installation space and the board’s form factor, as RV and under-counter installations may require compact designs with space-saving features. Look for boards that offer robust build quality, corrosion resistance, and protective coatings to withstand humidity and temperature fluctuations. Evaluate whether an analog or digital control approach best fits your setup and whether the kit includes necessary accessories or requires separate components. Finally, assess warranty coverage and the availability of customer support in case of intermittent faults or compatibility questions. A balanced choice often blends proven compatibility with a reasonable installation path and durable construction.