ICP Control Board for RHH102H0AA0AAAA — OEM 1183618 Replacement Kit | Ships Today

Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP / Heil / Tempstar RHH102H0AA0AAAA heat pump. The control board is the brain of the unit — it manages defrost timing, reversing valve switching, compressor sequencing, fan operation, and safety lockouts. When this board fails, the system may stop responding to thermostat calls, fail to switch between heating and cooling, get stuck in defrost, or short-cycle the compressor. Installing a factory-matched board restores correct logic and protects the compressor from improper sequencing.

Specifications

Compatibility

Engineered as a direct-fit replacement for the ICP family RHH102H0AA0AAAA heat pump and closely related Heil, Tempstar, and Comfortmaker units that originally shipped with control board 1183618. Always verify your existing board part number against the kit before installation.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter at the board terminals.
2. Access — Remove the control panel service cover to expose the board.
3. Document — Photograph every wire and connector position before disconnecting anything.
4. Remove — Unplug the low-voltage and line-voltage harnesses, release the board standoffs/screws, and lift out the old board.
5. Install — Seat the new 1183618 board on the standoffs and reconnect each harness exactly per your photos.
6. Test — Restore power and confirm correct heating, cooling, defrost, and reversing-valve operation.

Signs You Need a Replacement

• Unit ignores thermostat heat or cool calls entirely
• System fails to switch between heating and cooling modes
• Stuck in or never enters defrost during cold weather
• Visible burnt traces, relay damage, or scorch marks on the board

Shipping & Returns

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