What are the specs for this Control Board?

The correct replacement for ICP model RHH036H0CA0AAAA — 24V Defrost Board | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number RHH036H0CA0AAAA — 24V Defrost Board | Ships Today.

ICP

ICP Heat Pump Control Board Kit for RHH036H0CA0AAAA — 24V Defrost Board | Ships Today

Name: ICP Heat Pump Control Board Kit for RHH036H0CA0AAAA — 24V Defrost Board | Ships Today
Brand: ICP
SKU: 1183618
Price: 193.70 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This is a genuine OEM control board kit (part #1183618) for the ICP / Tempstar / Heil RHH036H0CA0AAAA heat pump. The control board manages the defrost cycle, reversing valve switching, compressor staging, and 24V low-voltage communication between the thermostat and the outdoor unit. A failed board can leave the heat pump dead, stuck in defrost, unable to switch between heating and cooling, or short-cycling the compressor. Installing the exact OEM kit restores factory operation and protects the compressor and reversing valve from improper control sequencing.

Specifications

Spec	Value
Part Number	1183618 (KIT CONTROL BOARD)
Type	Heat Pump Defrost Control Board Kit
Brand	ICP / Tempstar / Heil
Control Voltage	24V
Fits Model	RHH036H0CA0AAAA
Fitment	OEM Replacement

Compatibility

Engineered as the factory replacement for the ICP RHH036H0CA0AAAA heat pump and shared across ICP-family brands including Tempstar, Heil, Comfortmaker, and Arcoaire units that use OEM control board kit 1183618. Confirm your existing board part number before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter before touching the board.
Access — Remove the control panel access cover on the outdoor unit.
Document — Photograph every wire and connector position on the existing board before disconnecting anything.
Remove — Label and unplug the low-voltage and line-voltage connectors, release the board standoffs/mounting screws, and lift out the failed board.
Install — Mount the new OEM board kit on the same standoffs and reconnect every wire exactly per your photo and the kit instructions.
Test — Restore power and verify the unit energizes, runs in heating and cooling, and completes a normal defrost cycle.

Signs You Need a Replacement

Heat pump will not start or has no 24V control output.
Unit stuck in defrost or never defrosts in cold weather.
System fails to switch between heating and cooling modes.
Visible burnt traces, scorched relays, or a melted connector on the board.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

ICP Heat Pump Control Board Kit ...

$193.70

Frequently Asked Questions

Does this Control Board fit my ICP RHH036H0CA0AAAA — 24V Defrost Board | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RHH036H0CA0AAAA — 24V Defrost Board | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the control board on my ICP RHH036H0CA0AAAA — 24V Defrost Board | Ships Today?

Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.

My HVAC system is completely dead. What could be wrong?

Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.

Is this control board compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP control board?

OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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