ICP Control Board Kit for RHH048S0CA0AAAA — OEM Replacement | Ships Today

Overview

This OEM control board kit (P/N 1183618) is the brain of the ICP Tempstar Heil RHH048S0CA0AAAA heat pump. It manages compressor and fan timing, defrost cycles, and the low-voltage logic that coordinates the reversing valve and contactor. The kit ships as a complete plug-in assembly with the correct connectors. A failed board produces erratic symptoms — no operation, locked-out compressor, missed or constant defrost, or intermittent shutdowns.

Specifications

Compatibility

Direct-fit replacement for the ICP Tempstar Heil RHH048S0CA0AAAA heat pump and related RHH048 series units specifying control board kit 1183618.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control compartment service panel.
3. Document — Photograph every connector and wire harness position before disconnecting.
4. Remove — Unplug each harness, release the board standoffs or screws, and lift out the old board.
5. Install — Seat the new board on its standoffs and reconnect each harness exactly per your photo.
6. Test — Restore power and confirm normal startup, heat/cool operation, and defrost timing.

Signs You Need a Replacement

• Unit completely dead with confirmed 24V supply.
• Compressor or fan won't start despite good contactor and capacitor.
• Defrost never runs, or runs constantly.
• Intermittent lockouts or random shutdowns.

Shipping & Returns

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