What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA3604GKN200 - 40A Definite Purpose | 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 WCA3604GKN200 - 40A Definite Purpose | 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 WCA3604GKN200 - 40A Definite Purpose | Ships Today

Name: ICP Contactor for WCA3604GKN200 - 40A Definite Purpose | Ships Today
Brand: ICP
SKU: 1176763
Price: 45.44 USD
Availability: InStock

SKU: 1176763 Brand: ICP

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Overview

This is a genuine OEM 40-amp definite purpose contactor (part number 1176763) for the ICP / Tempstar / Heil WCA3604GKN200 condensing unit. The contactor is the high-current switch that delivers line voltage to the compressor and condenser fan motor whenever the thermostat calls for cooling. When the control coil is energized, it pulls the contacts closed to power the outdoor unit; when the call ends, the contacts open and the unit shuts down. This part is rated for 40 amps, giving it the headroom needed for the higher locked-rotor and run currents of the WCA3604GKN200. Common failure symptoms include a humming or chattering condenser, contacts that weld shut so the compressor runs continuously, pitted or burned contacts, and an outdoor unit that will not start at all.

Specifications

Spec	Value
OEM Part Number	1176763
Part Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Contact Rating	40 Amps
Application	AC compressor / condenser fan
Fits Model	WCA3604GKN200

Compatibility

This contactor is a direct-fit OEM replacement for the ICP / Tempstar / Heil WCA3604GKN200 air conditioning condensing unit. Part 1176763 is a 40A service contactor used across ICP-family residential split-system condensers; verify that your existing contactor is rated for 40 amps with a matching coil voltage and terminal layout before ordering.

Installation Guide

Safety First - Disconnect power at the outdoor disconnect and breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access - Remove the service panel from the condensing unit to expose the electrical compartment.
Document - Photograph every wire connection before disconnecting anything.
Remove - Label and disconnect the line, load, and coil wires, then unfasten the old contactor from its mounting bracket.
Install - Mount the new contactor and reconnect each wire exactly per your photo, confirming the coil leads land on the coil terminals.
Test - Restore power and call for cooling; verify the contactor pulls in and the compressor and fan start normally.

Signs You Need a Replacement

Buzzing, humming, or chattering from the outdoor unit
Compressor will not start on a cooling call
Contacts welded closed so the condenser never cycles off
Pitted, burned, or melted contacts and terminals

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 Contactor for WCA3604GKN200 ...

$45.44

Frequently Asked Questions

Does this Contactor fit my ICP WCA3604GKN200 - 40A Definite Purpose | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA3604GKN200 - 40A Definite Purpose | 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 WCA3604GKN200 - 40A Definite Purpose | 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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