What are the specs for this Control Board?

The correct replacement for ICP model RHS243H0BA0AAAA — OEM 1183618 Replacement | 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 RHS243H0BA0AAAA — OEM 1183618 Replacement | Ships Today.

ICP

ICP Control Board Kit for RHS243H0BA0AAAA — OEM 1183618 Replacement | Ships Today

Name: ICP Control Board Kit for RHS243H0BA0AAAA — OEM 1183618 Replacement | Ships Today
Brand: ICP
SKU: 1183618
Price: 246.94 USD
Availability: InStock

SKU: 1183618 Brand: ICP

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Overview

This is the OEM Control Board Kit (part number 1183618) for the ICP Tempstar Heil RHS243H0BA0AAAA heat pump. The control board is the electronic brain of the outdoor unit — it manages defrost timing, compressor and fan staging, reversing-valve switching, and safety lockouts. When the board fails you'll typically see no-cool/no-heat conditions, the unit ignoring thermostat calls, erratic defrost cycles, or blinking diagnostic fault codes. This factory kit ships with the correct firmware and connector layout for a true plug-in replacement.

Specifications

Spec	Value
Part Number	1183618
Type	Control Board Kit
Brand	ICP (Tempstar / Heil)
Control Voltage	24V
Fits Model	RHS243H0BA0AAAA
Application	Heat Pump Outdoor Unit

Compatibility

Engineered for the ICP/Tempstar/Heil RHS243H0BA0AAAA heat pump. Always confirm your existing board's part number against 1183618 before ordering, as ICP shares chassis families across closely related model suffixes.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the outdoor unit control-panel access cover.
Document — Photograph every wire and connector position before disconnecting anything.
Remove — Unplug the wiring harnesses, release the board standoffs/screws, and lift out the old board.
Install — Mount the new 1183618 board on the standoffs and reconnect each harness exactly per your photos.
Test — Restore power and verify a clean cooling, heating, and defrost cycle with no fault codes.

Signs You Need a Replacement

Unit will not respond to thermostat calls for heat or cool
Flashing or solid LED diagnostic fault codes on the board
Compressor or outdoor fan fails to start or stage correctly
Stuck, missing, or constantly repeating defrost cycles

Shipping & Returns

Ships same day on orders placed 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 Control Board Kit for RHS243...

$246.94

Frequently Asked Questions

Does this Control Board fit my ICP RHS243H0BA0AAAA — OEM 1183618 Replacement | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RHS243H0BA0AAAA — OEM 1183618 Replacement | 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 RHS243H0BA0AAAA — OEM 1183618 Replacement | 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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