ICP Defrost Control Board for RYMA10F001A — Heat Pump OEM 1052757 | Ships Today
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Overview
This is a genuine OEM defrost control board (part number 1052757) for the ICP RYMA10F001A heat pump. The defrost control board governs the heat pump's defrost cycle — it watches outdoor coil temperature and compressor run time, then switches the system into defrost to melt frost and ice off the outdoor coil during heating operation. A failed board typically shows up as a coil that ices over and loses heat output, a unit stuck in or unable to reach defrost, or excessive auxiliary heat use. The board runs on a 24V control circuit and is matched to the RYMA10F001A platform for correct defrost timing and sensor interpretation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1052757 |
| Type | Defrost Control Board |
| Brand | ICP (Tempstar / Heil) |
| Control Voltage | 24V |
| Application | Heat Pump |
| Fits Model | RYMA10F001A |
Compatibility
Engineered as the direct OEM replacement for the ICP RYMA10F001A heat pump and equivalent Tempstar, Heil, and Comfortmaker units built on the same platform. Confirm the printed part number on your existing board reads 1052757 before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter before touching any wiring.
- Access — Remove the outdoor unit's control access panel.
- Document — Photograph every wire and terminal connection on the old board before disconnecting anything.
- Remove — Label and disconnect the low-voltage leads and sensor connections, then unclip or unscrew the old board from its standoffs.
- Install — Mount the new board, reconnect every wire exactly per your photo, and confirm the defrost sensor is seated on the coil.
- Test — Restore power, run a heating call, and verify the unit initiates and terminates defrost correctly.
Signs You Need a Replacement
- Outdoor coil ices over and never clears in heating mode.
- Heat pump runs constantly in defrost or never enters defrost.
- Auxiliary/emergency heat runs excessively, raising electric bills.
- No response from the board, burnt smell, or visible scorching on the PCB.
Shipping & Returns
Ships same day on orders placed 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