ICP Defrost Control Board for RYMA10F001C — 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 RYMA10F001C heat pump. The defrost control board is the brain of your heat pump's defrost cycle — it monitors outdoor coil temperature and run time, then commands the system to reverse into defrost mode to clear frost and ice from the outdoor coil during heating season. When this board fails, the most common symptom is a heat pump that ices over and loses heating capacity, or one that never enters or never exits defrost. This board operates on a standard 24V control circuit and is matched to the RYMA10F001C platform for correct timing and sensor logic.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1052757 |
| Type | Defrost Control Board |
| Brand | ICP (Tempstar / Heil) |
| Control Voltage | 24V |
| Application | Heat Pump |
| Fits Model | RYMA10F001C |
Compatibility
Engineered as the direct OEM replacement for the ICP RYMA10F001C heat pump and equivalent Tempstar, Heil, and Comfortmaker units built on the same platform. Always 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