ICP Defrost Control Board for YA075NA1 — 24V Heat Pump Board | Ships Today
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Overview
This is a genuine OEM defrost control board (part 1052757) for the ICP/Heil/Tempstar YA075NA1 heat pump. The defrost control board is the brain of the outdoor unit during heating mode — it monitors coil temperature and run time, then commands a defrost cycle to clear frost and ice from the outdoor coil so the heat pump can keep delivering heat efficiently. During defrost the board reverses the refrigerant cycle, stops the outdoor fan, and energizes auxiliary heat. A failed board causes the most common cold-weather heat pump complaints: a coil that ices over, no defrost, no heating, or short cycling.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1052757 |
| Type | Defrost control board |
| Brand | ICP / Heil / Tempstar |
| Control Voltage | 24V |
| Function | Defrost cycle timing & control |
| Fits Model | YA075NA1 |
Compatibility
Designed specifically for the ICP/Tempstar/Heil YA075NA1 heat pump and related Carrier-built ICP-family outdoor units that use this defrost board platform. Verify the part number and connector layout against the board currently installed before replacing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then confirm zero voltage with a multimeter.
- Access — Remove the outdoor unit control/access panel.
- Document — Photograph every wire harness and plug position on the old board before disconnecting anything.
- Remove — Unplug each harness, release the board standoffs or screws, and lift out the old board.
- Install — Mount the new board, reconnect each connector to the matching terminal per your photo, and set any defrost timing jumpers to match the original.
- Test — Restore power, run a heating call, and confirm normal operation and a proper defrost cycle.
Signs You Need a Replacement
- Outdoor coil ices over and never defrosts.
- No heating output in heat-pump mode.
- Unit short cycles or behaves erratically during cold weather.
- Visible burn marks, corrosion, 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