ICP Control Board Kit for RHS243L0FA0AAAA — OEM Defrost Control Board | Ships Today

Overview

This genuine OEM control board kit (part #1183618) is the electronic brain of the ICP / Tempstar / Heil RHS243L0FA0AAAA heat pump. It manages the defrost cycle, compressor and reversing valve sequencing, time-delay protection, and safety lockouts. A failed control board often shows up as a unit that won't defrost, short-cycles, ignores thermostat calls, or runs the compressor without proper anti-short-cycle delays. The kit ships with the mounting hardware needed for a clean replacement.

Specifications

Compatibility

Engineered as a direct-fit replacement for the ICP RHS243L0FA0AAAA heat pump and shared across ICP-family Tempstar, Heil, and Comfortmaker models using kit 1183618. Verify the part number against your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
2. Access — Remove the condenser service panel and locate the control board.
3. Document — Photograph every plug, terminal, and sensor lead before disconnecting.
4. Remove — Unplug the harnesses and unclip or unscrew the old board from its standoffs.
5. Install — Mount the new board on the supplied hardware and reconnect each harness per your photo.
6. Test — Restore power, confirm the board powers up, and verify a normal heating, cooling, and defrost sequence.

Signs You Need a Replacement

• Heat pump never enters or never exits defrost.
• Unit ignores thermostat calls or short-cycles repeatedly.
• Visible burn marks, scorched relays, or swollen components on the board.
• Compressor runs with no anti-short-cycle delay or random lockouts.

Shipping & Returns

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