What are the specs for this Control Board?

The correct replacement for ICP model YA100HA1 — Heat Pump Timer | 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 YA100HA1 — Heat Pump Timer | Ships Today.

ICP

ICP Defrost Control Board for YA100HA1 — Heat Pump Timer | Ships Today

Name: ICP Defrost Control Board for YA100HA1 — Heat Pump Timer | Ships Today
Brand: ICP
SKU: 1052757
Price: 168.94 USD
Availability: InStock

SKU: 1052757 Brand: ICP

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Overview

This OEM defrost control board (part 1052757) is the brain of the ICP/Tempstar/Heil YA100HA1 heat pump's defrost cycle. In heating mode, frost builds on the outdoor coil; the defrost board monitors the defrost thermostat and an internal timer (typically 30/60/90-minute selectable intervals) to periodically reverse the system, melt the ice, and return to heating. It also coordinates the reversing valve, condenser fan, and auxiliary heat during defrost. When the board fails, the outdoor coil ices over and chokes airflow, heating capacity drops, the unit short-cycles, or defrost runs constantly. A failed board can also leave the reversing valve or fan misenergized, causing no-heat or no-defrost complaints. Installing the correct OEM defrost board restores proper, energy-efficient heat-pump operation.

Specifications

Spec	Value
Part Number	1052757
Type	Defrost Control Board
Brand	ICP (Tempstar / Heil)
Control Voltage	24V
Function	Timed Defrost Cycle Management
Fitment	OEM Replacement

Compatibility

Designed for the ICP/Tempstar/Heil YA100HA1 heat pump condensing unit and related ICP-family heat pumps using this defrost board. Verify the OEM board part number and connector layout before ordering.

Installation Guide

Safety First — Disconnect power and verify zero voltage with a multimeter before touching the board.
Access — Remove the condenser control-access panel.
Document — Photograph every connector and the defrost-timer jumper/pin setting before disconnecting.
Remove — Unplug each harness, release the standoffs or screws, and lift out the old board.
Install — Mount the new board, set the defrost interval jumper to match the original, and reconnect each harness per your photo.
Test — Restore power, run a heating cycle, and confirm a proper timed defrost (forced defrost test if available).

Signs You Need a Replacement

Outdoor coil iced over in heating mode
No defrost cycle or constant defrost
Weak heating output or frequent short-cycling
Reversing valve or fan not switching during defrost

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

ICP Defrost Control Board for YA...

$168.94

Frequently Asked Questions

Does this Control Board fit my ICP YA100HA1 — Heat Pump Timer | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP YA100HA1 — Heat Pump Timer | 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 YA100HA1 — Heat Pump Timer | 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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