ICP Furnace Control Board Kit for RHH048H0XA0AAAA — OEM 1183618 | Ships Today

Overview

This is a genuine OEM control board kit (OEM part #1183618) for the ICP / Tempstar / Heil RHH048H0XA0AAAA heat pump system. The control board is the brain of the unit — it sequences the compressor, fan, defrost timing, and 24V control logic, monitoring safeties and routing power to each component on demand. The kit ships with the board and the mounting hardware needed for a clean swap. When a control board fails you may see a dead system, intermittent operation, a unit that won't enter or exit defrost, blower or fan staging problems, or fault/diagnostic LED codes flashing at the board.

Specifications

Compatibility

Designed for the ICP / Tempstar / Heil RHH048H0XA0AAAA and related ICP-family units that specify control board kit 1183618. Because control boards are model-specific, always match the OEM part number on your existing board to this kit 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/electrical access panel.
3. Document — Photograph every wire and connector position on the old board before disconnecting; note any jumper or DIP switch settings.
4. Remove — Unplug the harnesses and spade terminals, then unclip or unscrew the old board from its standoffs.
5. Install — Mount the new board, set any switches to match the original, and reconnect every harness and wire exactly per your photo.
6. Test — Restore power, run a heating and cooling cycle, and confirm normal operation with no fault codes.

Signs You Need a Replacement

• System is completely dead with confirmed incoming power.
• Intermittent operation or random shutdowns.
• Unit fails to enter or terminate defrost correctly.
• Diagnostic LED is flashing a hard-fault code or is dark.

Shipping & Returns

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