ICP Control Board Kit for RHS240L0EA0AAAA — 24V Heat Pump Defrost Board | Ships Today

Overview

This OEM control board kit (OEM 1183618) for the ICP / Heil / Tempstar RHS240L0EA0AAAA heat pump is the brain of the outdoor unit's defrost and control logic. It manages the defrost cycle timing, monitors the coil and ambient sensors, switches the reversing valve, and sequences the compressor and condenser fan. Supplied as a complete kit with the mounting hardware and connectors needed for a clean replacement. A failed control board is a common cause of no-heat in heat-pump mode, ice buildup on the outdoor coil from missed defrost cycles, intermittent operation, and erratic compressor or fan behavior.

Specifications

Compatibility

Built for the ICP RHS240L0EA0AAAA split heat pump and shared-platform outdoor units sold under the Heil, Tempstar, Comfortmaker, and Arcoaire labels. Verify the OEM kit number against your existing board before ordering, as control boards are platform-specific.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter before touching the board.
2. Access — Remove the outdoor unit control panel cover.
3. Document — Photograph every harness and sensor connection on the old board.
4. Remove — Unplug each connector, release the board standoffs/screws, and lift out the old board.
5. Install — Mount the new kit board and reconnect every harness to its matching plug per your photo.
6. Test — Restore power, run a heat call, and confirm normal sequencing and a proper defrost cycle.

Signs You Need a Replacement

• Heavy ice buildup on the outdoor coil from missed defrost cycles.
• No heat in heat-pump mode despite a thermostat call.
• Compressor or fan short-cycling or random shutdowns.
• Visible burn marks, scorching, 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.