What are the specs for this Control Board?

The correct replacement for ICP model RYMA75F001C — Heat Pump Timer/Sensor Board | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number RYMA75F001C — Heat Pump Timer/Sensor Board | Ships Today.

ICP

ICP Defrost Control Board for RYMA75F001C — Heat Pump Timer/Sensor Board | Ships Today

Name: ICP Defrost Control Board for RYMA75F001C — Heat Pump Timer/Sensor Board | Ships Today
Brand: ICP
SKU: 1052757
Price: 194.94 USD
Availability: InStock

SKU: 1052757 Brand: ICP

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Overview

This OEM defrost control board (part #1052757) is the electronic brain of the ICP / Tempstar / Heil RYMA75F001C heat pump's defrost cycle. It monitors the coil temperature sensor and accumulated run time, then commands the reversing valve, condenser fan, and auxiliary heat to clear frost from the outdoor coil during cold-weather operation. The board manages defrost timing intervals, fan shutdown during defrost, and the changeover relay logic. A failed defrost board leaves the outdoor coil to ice over, kills heating capacity, and can trip the unit on high pressure or stick it in a single mode.

Specifications

Spec	Value
Part Number	1052757
Type	Defrost Control Board
Brand	ICP (Tempstar / Heil)
Control Voltage	24 VAC
Function	Defrost timing, reversing valve & fan control

Compatibility

Designed for the ICP RYMA75F001C heat pump and the matching Tempstar, Heil, and Comfortmaker RYMA-series outdoor units. Confirm the connector layout and defrost timing pin selection match your original board.

Installation Guide

Safety First — Disconnect power at the disconnect and verify zero voltage with a multimeter.
Access — Remove the condenser service panel to reach the control box.
Document — Photo every connector and the defrost-timing pin/jumper setting before disconnecting.
Remove — Unplug each harness and unscrew the old board from its standoffs.
Install — Mount the new board, set the defrost timing pin to match the original, and reseat every connector per your photo.
Test — Restore power, initiate a defrost (or forced defrost) and confirm the reversing valve, fan, and aux heat respond correctly.

Signs You Need a Replacement

Outdoor coil ices over and never clears
Heat pump won't enter or exit defrost
No 24V output to reversing valve or fan
Erratic mode switching or scorched board traces

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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

ICP Defrost Control Board for RY...

$194.94

Frequently Asked Questions

Does this Control Board fit my ICP RYMA75F001C — Heat Pump Timer/Sensor Board | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP RYMA75F001C — Heat Pump Timer/Sensor Board | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the control board on my ICP RYMA75F001C — Heat Pump Timer/Sensor Board | Ships Today?

Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.

My HVAC system is completely dead. What could be wrong?

Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.

Is this control board compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP control board?

OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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