What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH3604GKA2 — 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 WCH3604GKA2 — 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 WCH3604GKA2 — 40 Amp 2-Pole | Ships Today

Name: ICP Contactor for WCH3604GKA2 — 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 primary switching relay for ICP Tempstar Heil model WCH3604GKA2 heat pump condensing units. When the thermostat calls for cooling or heating, the 24V control circuit energizes the contactor coil, pulling the contacts closed to deliver line voltage to the compressor and condenser fan motor. Because it cycles thousands of times per season, the contactor is one of the most common failure points in any outdoor unit. Failure symptoms include a unit that hums but won't start, chattering or buzzing at the contactor, pitted or burned contacts, and a condenser fan and compressor that fail to energize even though the thermostat is calling. A welded (stuck-closed) contactor can also keep 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 WCH3604GKA2 and shared across many ICP-family condensers and heat pumps (Comfortmaker, Arcoaire, KeepRite). Always confirm the 40A rating and 24V coil match your existing component 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 — Note terminal positions, transfer the wires one at a time, and unbolt the old contactor from the bracket.
Install — Mount the new contactor, reconnect each wire exactly per your photo, and confirm tight terminals.
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
Visibly 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 WCH3604GKA2 — ...

$41.60

Frequently Asked Questions

Does this Contactor fit my ICP WCH3604GKA2 — 40 Amp 2-Pole | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH3604GKA2 — 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 WCH3604GKA2 — 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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