What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH3604GKA1 — 40 Amp 2-Pole | 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 WCH3604GKA1 — 40 Amp 2-Pole | 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 Contactor for WCH3604GKA1 — 40 Amp 2-Pole | Ships Today

Name: ICP Contactor for WCH3604GKA1 — 40 Amp 2-Pole | Ships Today
Brand: ICP
SKU: 1176763
Price: 41.60 USD
Availability: InStock

SKU: 1176763 Brand: ICP

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Overview

This OEM 40-amp, 2-pole definite purpose contactor (part #1176763) is the main switching relay for ICP Tempstar Heil model WCH3604GKA1 heat pump condensing units. When the 24V control circuit energizes the coil, the contacts close and deliver line voltage to the compressor and condenser fan motor. Because it engages every cooling and heating cycle, the contactor endures heavy electrical wear and is among the most frequent outdoor-unit failures. Typical symptoms include a unit that hums but won't start, buzzing or chattering at the contactor, pitted or burned contacts, and a compressor or condenser fan that won't energize on a call. A welded contactor can leave the compressor running continuously.

Specifications

Spec	Value
OEM Part Number	1176763
Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Rating	40 Amp
Poles	2-Pole
Coil Voltage	24V

Compatibility

Engineered for ICP Tempstar Heil model WCH3604GKA1 and shared across many ICP-family condensers and heat pumps (Comfortmaker, Arcoaire, KeepRite). Confirm the 40A rating and 24V coil match your existing contactor before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser service panel.
Document — Photograph all line, load, and 24V coil wires before disconnecting.
Remove — Transfer wires one at a time, then unbolt the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire exactly per your photo.
Test — Restore power, call for cooling, and verify the contacts pull in and the unit starts.

Signs You Need a Replacement

Unit hums or buzzes but the compressor won't start
Pitted, burned, or melted contacts
Chattering contactor or intermittent cooling
Compressor runs nonstop (welded contacts)

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 Contactor for WCH3604GKA1 — ...

$41.60

Frequently Asked Questions

Does this Contactor fit my ICP WCH3604GKA1 — 40 Amp 2-Pole | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH3604GKA1 — 40 Amp 2-Pole | 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 WCH3604GKA1 — 40 Amp 2-Pole | 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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