ICP Control Board Kit for RHH102L0CA0AAAA — OEM Part 1183618 | Ships Today
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Overview
The ICP OEM Control Board Kit (part number 1183618) is the brain of your RHH102L0CA0AAAA heat pump system. This circuit board manages defrost timing, compressor staging, fan control, and safety lockouts for the outdoor unit. When the control board fails, the unit may stop running entirely, fail to switch out of defrost, short-cycle, or ignore thermostat calls. Because it coordinates every major component, a faulty board produces erratic symptoms that are easy to misdiagnose as motor or compressor problems. Installing the correct genuine OEM board restores reliable operation and protects the more expensive components downstream.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Description | Kit, Control Board |
| Type | Heat Pump Defrost Control Board |
| Brand | ICP (Tempstar / Heil) |
| Control Voltage | 24V |
| Fit | OEM Genuine Replacement |
Compatibility
This control board kit is the genuine OEM replacement for the ICP / Tempstar / Heil model RHH102L0CA0AAAA. ICP-built equipment shares components across the Heil, Tempstar, Comfortmaker, and Arcoaire families, so this kit fits a range of matching outdoor units using part 1183618. Always confirm the part number on your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the outdoor unit's control-box service panel.
- Document — Photograph every wire and connector on the existing board before disconnecting anything.
- Remove — Label and unplug each harness, then unscrew the failed board from its standoffs.
- Install — Mount the new board on the standoffs and reconnect each harness exactly per your photos, matching every plug location.
- Test — Restore power and verify a normal call for cooling and heating, including a proper defrost cycle.
Signs You Need a Replacement
- Outdoor unit is completely unresponsive to thermostat calls
- Heat pump gets stuck in defrost or never defrosts in cold weather
- Compressor or fan short-cycles or fails to stage correctly
- Visible burn marks, swollen relays, or scorched traces on the board
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