MRCOOL Electronic Control Box Subassembly for DIY-MULTI3-27HP230C Condenser- 17222300002929

MRCOOL Electronic Control Box Subassembly for DIY-MULTI3-27HP230C Condenser

Restore the electrical control functions of your MRCOOL® DIY multi-zone ductless mini split heat pump with the MRCOOL Electronic Control Box Subassembly, Part #17222300002929.

Designed specifically for the MRCOOL DIY-MULTI3-27HP230C 27,000 BTU outdoor heat pump condenser, this genuine MRCOOL OEM replacement assembly is intended to replace a damaged or malfunctioning factory-installed electronic control box.

The electronic control box is a critical component of your multi-zone heating and cooling system. It supports essential outdoor unit functions, including compressor operation, fan control, system communication, electrical management, and equipment diagnostics.

Replacing a confirmed defective electronic control assembly with the correct model-specific OEM component may help restore reliable heating and cooling operation while maintaining proper communication between the outdoor condenser and connected indoor air handlers.

Key Product Features

• Genuine MRCOOL OEM Replacement: Part number 17222300002929, identified for the DIY-MULTI3-27HP230C condenser.
• Model-Specific Compatibility: Designed for the MRCOOL DIY-MULTI3-27HP230C 27,000 BTU multi-zone heat pump condenser.
• Complete Electronic Control Assembly: Intended to replace the specified factory-installed outdoor control box subassembly.
• Compressor and Fan Management: Supports important outdoor condenser operating and electrical control functions.
• Multi-Zone System Communication: Helps coordinate communication between compatible outdoor and indoor system components.
• Equipment Diagnostics: Supports control and diagnostic functions used by the compatible heat pump system.
• Factory-Matched Application: Intended for the specified MRCOOL outdoor condenser model.
• Replacement Repair Solution: Allows replacement of a failed control assembly without automatically requiring replacement of the entire outdoor condenser.

Important Model Compatibility Warning

PLEASE READ BEFORE ORDERING — MODEL NUMBERS MATTER.

This electronic control box subassembly is designed specifically for:

COMPATIBLE: MRCOOL DIY-MULTI3-27HP230C

NOT COMPATIBLE: MRCOOL DIY-MULTI3-27HP230

The letter C at the end of the model number is extremely important.

Although these MRCOOL multi-zone condensers may appear similar, they have different listed replacement electronic control box assemblies.

Condenser Model	Replacement Part Number
DIY-MULTI3-27HP230C	17222300002929
DIY-MULTI3-27HP230	17222300002428

This listing is for part number 17222300002929 and the DIY-MULTI3-27HP230C condenser only.

If your outdoor condenser model does not have the C suffix, do not order this control box.

Need the earlier version?

View the Electronic Control Box for DIY-MULTI3-27HP230 — Part #17222300002428.

Product Specifications

Specification	Details
Brand	MRCOOL®
Product Name	Electronic Control Box Subassembly
MRCOOL Part Number	17222300002929
Compatible Condenser	DIY-MULTI3-27HP230C
Incompatible Condenser	DIY-MULTI3-27HP230
System Capacity	27,000 BTU
Equipment Type	DIY Multi-Zone Ductless Heat Pump
Part Category	Outdoor Unit Electronics
Part Type	Electronic Control Box Assembly
Installation Location	Outdoor Condenser
Application	Replacement Electrical Control Component

 

Also Known As

This MRCOOL replacement component may also be searched for as:

• MRCOOL Control Board Sub-Assembly
• MRCOOL Outdoor Control Board
• MRCOOL Condenser Control Board
• MRCOOL Outdoor PCB
• MRCOOL Main Control Board
• MRCOOL Outdoor Circuit Board
• MRCOOL Electronic Control Module
• MRCOOL DIY Multi-Zone Control Box
• MRCOOL 27K Multi-Zone Control Board

These are common replacement-part search terms and do not establish compatibility with other MRCOOL models.

Signs Your Condenser May Have a Control Board Problem

A malfunctioning electronic control assembly may contribute to several operating problems, including:

• Outdoor condenser failing to start
• Intermittent heating or cooling operation
• Communication faults between indoor and outdoor equipment
• Compressor or outdoor fan control problems
• Electrical control errors
• Outdoor unit failing to respond to operating commands
• System shutdowns associated with electrical or communication faults

Important: These symptoms can also result from other equipment problems, including wiring faults, sensors, power supply issues, or failed electrical components.

A qualified HVAC technician should diagnose the system and confirm the electronic control box requires replacement before ordering.

Before Ordering Your Replacement Control Box

Please verify the following information:

1. Locate the equipment identification label on your outdoor condenser.
2. Confirm the complete model number is DIY-MULTI3-27HP230C.
3. Verify that replacement part number 17222300002929 matches the required component.
4. Confirm that your condenser has the letter C at the end of its model number.
5. Have a qualified HVAC technician diagnose the original electronic control assembly.
6. Contact MRCOOL DIRECT if you need assistance identifying the correct replacement component.

MRCOOL may use different electronic control assemblies across equipment generations, revisions, or production runs.

Never assume that similar-looking electronic control boxes are interchangeable.

Professional Installation Recommended

Electronic control box replacement involves high-voltage electrical components and sensitive inverter-driven HVAC electronics.

Installation and diagnosis should be performed by a qualified HVAC technician familiar with mini split and multi-zone heat pump systems.

Always follow the manufacturer’s service procedures and applicable electrical safety requirements.

Electrical components may retain hazardous stored energy even after the outdoor condenser has been disconnected from power.

Improper diagnosis, wiring, or installation may damage the replacement component or other system electronics.

Important Product Image Notice

Product images may be representative and are provided for illustrative purposes.

Actual electronic control box configuration, housing design, wiring connections, and component placement may vary.

Please verify the correct replacement part number and condenser model before purchasing.

Important Parts Return and Refund Policy

ALL PARTS SALES ARE FINAL — NO RETURNS OR REFUNDS.

Electrical and electronic replacement components are non-returnable.

Customers are responsible for verifying equipment compatibility before purchasing.

If you are unsure whether this electronic control box is correct for your MRCOOL condenser, please contact MRCOOL DIRECT before placing your order.

Why Buy from MRCOOL DIRECT?

MRCOOL DIRECT helps homeowners and HVAC professionals locate replacement parts, accessories, and heating and cooling equipment for their MRCOOL systems.

• MRCOOL replacement parts and components
• Assistance identifying compatible equipment
• Detailed product model and part-number information
• Customer support before ordering
• Convenient online ordering

Order the MRCOOL Electronic Control Box Subassembly, Part #17222300002929, for your compatible DIY-MULTI3-27HP230C condenser.

MRCOOL DIRECT — For a Cooler Tomorrow.