ICP Control Board Kit for RHS240H0AA0AAAA — OEM 1183618 | Ships Today

Overview

This is a genuine OEM Control Board Kit (part number 1183618) for the ICP / Heil / Tempstar RHS240H0AA0AAAA system. The control board manages the entire operating sequence — compressor, fan, reversing valve, and safety lockouts — while reading 24V inputs from the thermostat and sensors. A failed board can leave the equipment completely dead, running erratically, or throwing fault codes while every mechanical part tests good. This complete kit includes the board and the hardware needed for a direct swap.

Specifications

Compatibility

Designed as a direct-fit replacement for the ICP-family RHS240H0AA0AAAA and shared chassis built under the Heil, Tempstar, and Comfortmaker labels. Confirm the OEM part number on your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching the board.
2. Access — Remove the control compartment service panel.
3. Document — Photograph every low-voltage and line-voltage connection before disconnecting anything.
4. Remove — Unplug the harnesses, release the board standoffs, and lift out the failed board.
5. Install — Mount the new board on the standoffs and reconnect each harness exactly per your photos.
6. Test — Restore power, run a heat and cool call, and confirm normal sequencing with no fault codes.

Signs You Need a Replacement

• Unit is completely dead despite good 24V at the thermostat
• Intermittent operation or random shutdowns
• Persistent fault/error codes with no failed mechanical component
• Visible burn marks, scorched relays, or a swollen/cracked board

Shipping & Returns

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