What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH3604GKC100 — 24V Coil | 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 WCH3604GKC100 — 24V Coil | Ships Today.

My AC clicks but the compressor does not turn on. What is wrong?

Clicking from the outdoor unit without the compressor starting usually means a worn contactor. The contactor is the relay that sends power to the compressor. When its contacts are pitted or worn, it clicks but cannot establish a solid electrical connection. Other symptoms: visible pitting or burn marks on the contactor face, AC works intermittently, or buzzing from the contactor.

ICP

ICP Tempstar Heil 40A Contactor for WCH3604GKC100 — 24V Coil | Ships Today

Name: ICP Tempstar Heil 40A Contactor for WCH3604GKC100 — 24V Coil | Ships Today
Brand: ICP
SKU: 1176763
Price: 37.70 USD
Availability: InStock

SKU: 1176763 Brand: ICP

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Overview

This is a genuine 40-amp contactor for the ICP / Tempstar / Heil WCH3604GKC100 condensing unit. The contactor is the electrically operated switch that sends line voltage to the compressor and condenser fan motor whenever the 24V control circuit calls for cooling or heat-pump operation. Its 24-volt coil pulls the contacts closed; pitted, welded, or chattering contacts are one of the most common causes of a unit that hums but won't start, or that won't shut off. OEM part 1176763 is the direct factory replacement rated at 40A.

Specifications

Spec	Value
OEM Part Number	1176763
Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Contact Rating	40A
Coil Voltage	24V
Application	AC Compressor & Condenser Fan

Compatibility

Direct-fit for the ICP/Tempstar/Heil WCH3604GKC100 and equivalent condensing units using a 40A, 24V-coil definite-purpose contactor. Confirm pole count and coil voltage against your existing part before installing.

Installation Guide

Safety First — Disconnect power and verify zero voltage with a multimeter at the contactor line terminals.
Access — Remove the control-access service panel on the condensing unit.
Document — Photograph every wire and terminal position before disconnecting.
Remove — Move wires one at a time to the new contactor, or label them; then unscrew the old contactor from the bracket.
Install — Mount the new contactor and reconnect line, load, and 24V coil wires exactly per your photo.
Test — Restore power and call for cooling; confirm the contactor pulls in cleanly and the compressor and fan energize.

Signs You Need a Replacement

Unit hums but compressor and fan won't start.
Pitted, burnt, or welded contacts visible on inspection.
Chattering or buzzing from the contactor.
System won't shut off because contacts are stuck closed.

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

ICP Tempstar Heil 40A Contactor ...

$37.70

Frequently Asked Questions

Does this Contactor fit my ICP WCH3604GKC100 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH3604GKC100 — 24V Coil | 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 contactor on my ICP WCH3604GKC100 — 24V Coil | Ships Today?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.

My AC clicks but the compressor won’t turn on. What’s wrong?

Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.

Is this contactor 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 contactor?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

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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