ICP Defrost Control Board for YG018GB1 — OEM 1069364 24V Heat Pump | Ships Today
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Overview
This is a genuine OEM defrost control board (part number 1069364) for the ICP/Heil/Tempstar YG018GB1 heat pump. The defrost board is the brain of the heat pump's defrost cycle: it monitors the outdoor coil temperature and accumulated run time, then commands the reversing valve and outdoor fan to clear frost and ice off the outdoor coil during cold-weather heating. A failed defrost board is one of the most common causes of a heat pump that ices over, blows cold air in heat mode, or short-cycles in winter. Typical symptoms include the outdoor unit freezing solid, the system never entering or never exiting defrost, the auxiliary/emergency heat running constantly, or a unit that hums but won't switch modes. This board operates on a 24V control circuit and replaces the original part exactly for a true plug-and-play fit.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1069364 |
| Type | Defrost Control Board |
| Brand | ICP / Heil / Tempstar / Comfortmaker |
| Control Voltage | 24V |
| Application | Heat Pump Defrost Control |
| Fit | OEM Direct Replacement |
Compatibility
Designed as a direct OEM replacement for the ICP-family YG018GB1 heat pump and other Heil, Tempstar, and Comfortmaker units that originally shipped with defrost board 1069364. Always confirm the part number printed on your existing board before ordering, as production runs can vary.
Installation Guide
- Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage at the board terminals with a multimeter.
- Access — Remove the outdoor unit's control-panel service cover.
- Document — Photograph every wire and connector on the old board before disconnecting anything.
- Remove — Label and unplug the low-voltage harness, defrost sensor lead, and any spade connectors, then unscrew the old board from its standoffs.
- Install — Mount the new 1069364 board, reconnect every wire to match your photos, and set any defrost-timing jumper/pins to match the original.
- Test — Restore power, run the unit in heat mode, and confirm it initiates and terminates a defrost cycle correctly.
Signs You Need a Replacement
- Outdoor coil ices or frosts over and never clears
- Heat pump blows cold air or won't switch into defrost
- Auxiliary/emergency heat runs constantly in cold weather
- Unit short-cycles or the reversing valve won't energize
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