What are the specs for this Control Board?

The correct replacement for ICP model WAHT604A1 — OEM Replacement | 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 WAHT604A1 — OEM Replacement | Ships Today.

ICP

ICP Fan Coil Control Board for WAHT604A1 — OEM Replacement | Ships Today

Name: ICP Fan Coil Control Board for WAHT604A1 — OEM Replacement | Ships Today
Brand: ICP
SKU: 1172975
Price: 194.94 USD
Availability: InStock

SKU: 1172975 Brand: ICP

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Overview

This is a genuine OEM fan coil control board (part number 1172975) for the ICP / Tempstar / Heil WAHT604A1 air handler. The control board is the brain of the fan coil unit — it manages the blower motor, processes thermostat demands, sequences electric heat staging, and protects the low-voltage circuit. When the board fails, the symptoms range from a blower that won't start or won't stop, to no response from the thermostat, to electric heat that won't engage. Boards commonly fail from voltage surges, lightning, overheating, corroded relays, or burnt traces around the relay terminals. A failed control board is a frequent cause of intermittent "no heat" and "fan won't run" service calls on these air handlers.

Specifications

Spec	Value
Part Number	1172975
Type	Fan Coil Control Board
Brand	ICP (Tempstar / Heil)
Control Voltage	24V
Function	Blower & low-voltage control
Fits Model	WAHT604A1
Fitment	OEM Replacement

Compatibility

A direct OEM replacement for the ICP / Tempstar / Heil WAHT604A1 fan coil air handler and related ICP units built on this control platform. Confirm the 1172975 part number printed on your existing board before ordering for guaranteed fitment.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter; control boards are static-sensitive, so ground yourself.
Access — Remove the air handler service panel to expose the control board.
Document — Photograph every wire and connector position before disconnecting anything.
Remove — Unplug the wiring harnesses and low-voltage leads, then unscrew or unclip the board from its standoffs.
Install — Mount the new board on the standoffs and reconnect every harness and lead exactly per your photo.
Test — Restore power, then verify blower operation on both fan-only and a heating/cooling call.

Signs You Need a Replacement

Blower motor won't start, or runs continuously and won't shut off
No response to thermostat heat or cool calls
Electric heat stages fail to energize
Visible burnt traces, scorched relays, or a burnt smell 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

ICP Fan Coil Control Board for W...

$194.94

Frequently Asked Questions

Does this Control Board fit my ICP WAHT604A1 — OEM Replacement | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP WAHT604A1 — OEM Replacement | 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 WAHT604A1 — OEM Replacement | 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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