MRCOOL Electronic Control Box Subassembly for DIY-18-HP-C-230B - OEM Part 17222000029838

MRCOOL Electronic Control Box Subassembly for DIY-18-HP-C-230B Condenser

Restore the electrical control functions of your MRCOOL® DIY 4th Generation mini split heat pump with the MRCOOL Electronic Control Box Subassembly, Part #17222000029838.

Designed specifically for the MRCOOL DIY-18-HP-C-230B 18,000 BTU outdoor heat pump condenser, this genuine OEM replacement assembly is intended to replace a damaged or malfunctioning factory-installed electronic control box.

The electronic control box plays an essential role in managing condenser operation, including compressor control, outdoor fan operation, system communication, and heating and cooling functions.

Replacing a confirmed defective control assembly with the correct OEM component may help restore reliable system operation without replacing the entire outdoor condenser.

Key Product Features

• Genuine MRCOOL OEM Replacement: Part number 17222000029838 for the specified MRCOOL DIY condenser.
• Model-Specific Compatibility: Designed for the MRCOOL DIY-18-HP-C-230B 18,000 BTU heat pump condenser.
• Electronic Control Assembly: Includes the control board and protective housing as described for this replacement component.
• Compressor and Fan Control: Supports essential electrical control functions for the outdoor unit.
• System Communication: Helps manage communication between compatible heat pump components.
• Factory Replacement Application: Intended to replace the specified original electronic control box assembly.
• Cost-Effective Repair Option: Replacing a failed electronic assembly may eliminate the need to replace the complete condenser.

Important Model Compatibility Warning

PLEASE VERIFY YOUR MODEL BEFORE ORDERING.

This electronic control box subassembly is designed specifically for:

COMPATIBLE MODEL: MRCOOL DIY-18-HP-C-230B

SYSTEM CAPACITY: 18,000 BTU (1.5 Ton)

GENERATION: MRCOOL DIY 4th Generation

This replacement component is not confirmed compatible with other MRCOOL DIY generations, different condenser capacities, or models with different suffixes.

MRCOOL manufactures several generations of DIY heat pumps, and electronic control components may differ in wiring connections, circuit boards, operating software, and electrical specifications.

Do not assume that control boards from different MRCOOL DIY models are interchangeable.

Product Specifications

Specification	Details
Brand	MRCOOL®
Product Name	Electronic Control Box Subassembly
MRCOOL Part Number	17222000029838
Compatible Condenser	DIY-18-HP-C-230B
System Generation	DIY 4th Generation
System Capacity	18,000 BTU / 1.5 Ton
Equipment Type	Ductless Mini Split 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 Outdoor PCB
• MRCOOL Condenser Control Board
• MRCOOL Main Control Board
• MRCOOL Outdoor Circuit Board
• MRCOOL Electronic Control Module
• MRCOOL DIY 18K Control Box

These terms help identify the product but do not establish compatibility with other models.

Before Ordering Your Replacement Control Box

To help prevent ordering an incorrect electronic component, please complete the following steps:

1. Locate the equipment identification label on your outdoor condenser.
2. Confirm that the complete model number is DIY-18-HP-C-230B.
3. Verify that replacement part number 17222000029838 matches the required component.
4. Have a qualified HVAC technician diagnose the original control assembly before replacement.
5. Contact MRCOOL DIRECT if you need assistance identifying the correct replacement part.

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.

Always follow manufacturer service instructions and appropriate electrical safety procedures.

Electrical components may retain hazardous stored voltage even after power has been disconnected.

Replacing the electronic control box without diagnosing the original equipment failure may not correct the problem.

Important Product Image Notice

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

The actual electronic control box assembly, housing, wiring connections, or component configuration may vary from the images shown.

Always verify compatibility using the equipment model and correct replacement part number.

Important Parts Return and Refund Policy

ALL PARTS SALES ARE FINAL — NO RETURNS OR REFUNDS.

Electrical and electronic replacement components are non-returnable.

Please verify your MRCOOL condenser model and replacement part number before placing your order.

If you are unsure whether this electronic control box is correct for your equipment, contact MRCOOL DIRECT before purchasing.

Why Buy from MRCOOL DIRECT?

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

• MRCOOL replacement parts and components
• Assistance identifying compatible equipment
• Detailed product compatibility information
• Customer support before ordering
• Convenient online ordering

Order the MRCOOL Electronic Control Box Subassembly, Part #17222000029838, for your compatible DIY-18-HP-C-230B condenser.

MRCOOL DIRECT — For a Cooler Tomorrow.