ICP Control Board Kit for RHH090H0CA0AAAA — OEM Replacement | Ships Today

Overview

This is a genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RHH090H0CA0AAAA heat pump. The control board is the brain of the unit — it manages the sequence of operation, processes thermostat demands, controls the contactor and defrost cycle, monitors safety inputs, and times component staging. Supplied as a complete kit with the required mounting hardware and connectors, it directly replaces the original board. A failed control board causes no-heat or no-cool conditions, erratic operation, failed defrost cycles, or a completely dead unit. Boards commonly fail from power surges, moisture intrusion, and burned relays or traces.

Specifications

Compatibility

Designed for the ICP/Tempstar/Heil RHH090H0CA0AAAA and related ICP-family heat pump systems that use the 1183618 control board kit. Match the board part number and connector layout to your existing board before installing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control/service panel to expose the board.
3. Document — Photograph every wire harness and connector position before disconnecting anything.
4. Remove — Unplug each connector, release the board standoffs or screws, and lift out the old board.
5. Install — Mount the new board on the supplied standoffs and reconnect every harness per your photo.
6. Test — Restore power, run a thermostat call, and verify proper sequence of operation and defrost.

Signs You Need a Replacement

• Unit is completely dead with confirmed incoming power
• No-heat or no-cool despite a valid thermostat call
• Erratic operation, short-cycling, or failed defrost cycles
• Visible burn marks, scorched relays, or corrosion on the board

Shipping & Returns

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