ICP Control Board Kit for RHS150L0CB0AAAA — 24V Integrated Defrost Board | Ships Today
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Overview
This OEM control board kit (part 1183618) is the central logic board for the ICP / Heil / Tempstar RHS150L0CB0AAAA heat pump. It manages the 24V control circuit, sequences the compressor and condenser fan, and governs defrost timing for reliable heat-pump operation in both heating and cooling modes. When this board fails the unit may stop responding to thermostat calls, run continuously, fail to enter or exit defrost, or trip on safety lockouts. A faulty board often shows scorched relay contacts, blown traces, or a board that no longer powers up. Replacing it with the genuine OEM kit restores correct timing and protection rather than masking a symptom.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 (KIT CONTROL BOARD) |
| Type | Integrated heat-pump / defrost control board |
| Brand | ICP (Heil / Tempstar) |
| Control Voltage | 24V |
| Fits Model | RHS150L0CB0AAAA |
| Fitment | OEM direct replacement |
Compatibility
Engineered as a direct-fit replacement for the ICP / Heil / Tempstar RHS150L0CB0AAAA heat pump and closely related RHS150-series units that originally shipped with the 1183618 board kit. Always confirm your existing board's part number before ordering.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter at the board's line terminals.
- Access — Remove the unit's control/service panel to expose the existing board.
- Document — Photograph every wire and connector position before disconnecting anything.
- Remove — Label and unplug the low-voltage harness, sensor leads, and high-voltage terminals, then unsnap or unscrew the old board from its standoffs.
- Install — Mount the new 1183618 board on the standoffs and reconnect each wire exactly as photographed.
- Test — Restore power, call for heat and cool, and confirm correct staging, fan operation, and a clean defrost cycle.
Signs You Need a Replacement
- Unit does not respond to thermostat calls or runs continuously.
- Heat pump fails to enter or exit defrost properly.
- Visible burnt relays, scorched traces, or a dead board with no LED.
- Intermittent lockouts or erratic compressor/fan cycling.
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days