What are the specs for this Control Board?

The correct replacement for ICP model WPG3604090LKC1 — Integrated Ignition Control Module | 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 WPG3604090LKC1 — Integrated Ignition Control Module | Ships Today.

ICP

ICP Furnace Control Board for WPG3604090LKC1 — Integrated Ignition Control Module | Ships Today

Name: ICP Furnace Control Board for WPG3604090LKC1 — Integrated Ignition Control Module | Ships Today
Brand: ICP
SKU: 1178358
Price: 206.70 USD
Availability: InStock

SKU: 1178358 Brand: ICP

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Overview

This OEM furnace control board is the brain of your ICP / Tempstar / Heil WPG3604090LKC1 packaged gas unit. It manages the complete heating sequence — inducer start-up, pressure switch proving, hot surface igniter warm-up, gas valve timing, blower on/off delays, and flame sensing. It also includes the integrated ignition control module function (OEM 1177661) on the same assembly. When this board fails, the furnace loses its ability to safely sequence ignition, so the unit either does nothing on a call for heat or locks out after a few failed trials. This part replaces OEM circuit board 1178358 and ignition control module 1177661. A faulty board is one of the most common causes of intermittent no-heat calls on rooftop and packaged gas/electric units.

Specifications

Spec	Value
Part Numbers	1178358 (Circuit Board), 1177661 (Ignition Control Module)
Type	Integrated Furnace Control Board
Brand	ICP / Tempstar / Heil
Control Voltage	24V
Ignition Type	Hot Surface Ignition
Fitment	OEM

Compatibility

Designed as a direct OEM replacement for the ICP Tempstar Heil WPG3604090LKC1 packaged gas/electric unit. The same board family is used across many related ICP-built brands including Comfortmaker, Arcoaire, KeepRite and Day & Night. Always match your existing board part number before ordering.

Installation Guide

Safety First — Disconnect power at the unit disconnect and breaker; verify zero voltage with a multimeter before touching any wiring.
Access — Remove the control/blower access panel to expose the board.
Document — Photograph every wire and connector position before disconnecting anything.
Remove — Unplug the wire harnesses, release the board mounting screws/standoffs, and lift out the old board.
Install — Mount the new board, then reconnect every harness exactly as photographed.
Test — Restore power, initiate a call for heat, and confirm a full ignition sequence with proper blower timing.

Signs You Need a Replacement

Furnace ignores the call for heat — no inducer, no igniter glow
Repeated lockouts after several failed ignition trials
Blower runs constantly or fails to start after ignition
Visible burn marks, corrosion, or cracked solder joints 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 Furnace Control Board for WP...

$206.70

Frequently Asked Questions

Does this Control Board fit my ICP WPG3604090LKC1 — Integrated Ignition Control Module | Ships Today?

Yes. This is the factory-specified OEM control board for the ICP WPG3604090LKC1 — Integrated Ignition Control Module | 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 WPG3604090LKC1 — Integrated Ignition Control Module | 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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