ICP Control Board Kit for RHS240H0BA0AAAA — OEM 1183618 | Ships Today

Overview

This is a genuine OEM Control Board Kit (part number 1183618) for the ICP / Heil / Tempstar RHS240H0BA0AAAA system. The control board is the brain of the unit — it sequences the compressor, fan, reversing valve, and safety circuits while monitoring 24V inputs from the thermostat and sensors. When it fails, the equipment may not start, may run erratically, or may trip on fault codes even when every other component checks out. Because this is a complete kit, it ships with the board and the mounting hardware required for a clean swap.

Specifications

Compatibility

Designed as a direct-fit replacement for the ICP-family RHS240H0BA0AAAA and shared chassis built under the Heil, Tempstar, and Comfortmaker labels. Always confirm the OEM part number stamped 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.