ICP Control Board Kit for RHH036L0CA0AAAA — OEM 1183618 Heat Pump Board | Ships Today

Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RHH036L0CA0AAAA heat pump. The control board governs the defrost cycle, sequences the compressor and reversing valve, monitors the pressure-switch safeties, and routes the 24V signals between the thermostat, contactor, and condenser fan. A failed board can cause no heat, no cool, defrost lockups, or no response to the thermostat. Installing a factory-matched board restores correct timing and protects the rest of the system.

Specifications

Compatibility

Engineered as a direct OEM fit for the ICP/Tempstar/Heil RHH036L0CA0AAAA heat pump and related models in the same family that shipped with control board 1183618. Confirm your unit's board part number before ordering.

Installation Guide

1. Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control panel service cover from the outdoor unit.
3. Document — Photograph every wire and terminal on the old board before disconnecting.
4. Remove — Label and disconnect all leads, then unscrew the failed board from its standoffs.
5. Install — Mount the new 1183618 board, reconnect each wire per your photo, and match the defrost timing jumper to the original.
6. Test — Restore power, run heat and cool calls, and confirm the compressor, fan, and reversing valve cycle correctly.

Signs You Need a Replacement

• Unit does not respond to thermostat calls for heat or cool
• Heat pump stuck in defrost or never defrosts
• Compressor or fan won't energize despite a good contactor
• Visible scorching, burnt 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.