Control Board for MRCOOL A‑18‑HP‑WMAH‑230B 18k BTU Ductless Mini Split Wall‑Mounted Air Handler – Part # 17222000028516 – Fast USA Shipping from MRCOOL DIY Direct

Upgrade or repair your MRCOOL ductless mini split with confidence! This genuine OEM control board is engineered for seamless compatibility and reliable performance in the A‑18‑HP‑WMAH‑230B 18,000 BTU wall‑mounted air handler, ensuring your system runs smoothly all year long.

🔧 Key Features & Benefits

• Perfect Fit for A‑18‑HP‑WMAH‑230B: Precision‑engineered replacement board guarantees 100% compatibility with the 18k BTU MRCOOL wall‑mounted indoor unit.

• Reliable System Control: Manages fan speeds, compressor cycling, temperature sensors, defrost cycles, and safety interlocks to maintain optimal comfort and efficiency.

• OEM Quality Assurance: Manufactured to MRCOOL’s strict specifications—no generic substitutes—so you get the same high‑quality component originally installed by the factory.

• Easy DIY Installation: Pre‑configured plug‑and‑play connectors and clear wiring harness labels minimize install time. Ideal for seasoned DIYers and professional HVAC technicians alike.

• Diagnostics & Service Mode: Built‑in diagnostic LEDs help you quickly identify faults, speeding up troubleshooting and reducing downtime.

• Durable Design: Protected circuit layout and corrosion‑resistant coatings ensure long life, even in high‑humidity environments.

⚙️ Technical Specifications

• Part Number: 17222000028516

• Voltage: 24 VAC control circuit

• Operating Temperature Range: 32°F to 122°F (0°C to 50°C)

• Dimensions: 5.5″ × 4.0″ × 1.5″ (approx.)

• Connector Types: Standard MRCOOL 6‑pin and 8‑pin harness ports

• Compliance: UL listed, CE certified

✅ Compatibility

• Indoor Unit Model: A‑18‑HP‑WMAH‑230B (May Be Compatible With Other Models or Brands)

📦 What’s Included

1. OEM Control Board (Part # 17222000028516)

Note: Images may be stock photos and are for illustrative purposes. Actual board may vary slightly in appearance but will be fully compatible.

🚚 Why Buy from MRCOOL DIY Direct?

• USA’s Most Trusted HVAC Dealer: Over a decade of specializing in MRCOOL products and support.

• Fast, Missouri‑Based Shipping: Most orders ship same‑day from our Joplin, MO warehouse.

• Expert Technical Support: Reach our in‑house HVAC pros by phone or email for installation tips and troubleshooting.

• Secure Checkout & Warranty: 100% satisfaction guarantee + 1‑year parts warranty backed by MRCOOL DIY Direct.

🛠️ Installation Tips

1. Power Off: Always disconnect 24 VAC power before servicing.

2. Document Wiring: Take photos of the existing board connections for reference.

3. Seating & Grounding: Ensure board sits flush and grounding strap is secured to chassis.

4. Test Run: After install, cycle system through heat/cool modes and monitor diagnostic LEDs for any error codes.

Don’t let a faulty control board compromise your comfort—order your genuine MRCOOL control board today and get back to reliable, energy‑efficient cooling and heating. Click “Add to Cart” now!