What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA4304GKA100 - 1-Pole 30A 24V Coil with Shunt | 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 WCA4304GKA100 - 1-Pole 30A 24V Coil with Shunt | 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 WCA4304GKA100 - 1-Pole 30A 24V Coil with Shunt | Ships Today

Name: ICP Contactor for WCA4304GKA100 - 1-Pole 30A 24V Coil with Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 38.94 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This is a genuine OEM single-pole definite purpose contactor (part number 1172472) for the ICP / Tempstar / Heil WCA4304GKA100 condensing unit. The contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. When the 24-volt coil is energized, it pulls the contacts closed to deliver line voltage to the outdoor unit. This part is rated for 30 amps with a 24V control coil and includes an integrated shunt for reliable single-pole switching. Common failure symptoms include a humming or chattering outdoor unit, contacts that weld shut so the compressor will not shut off, pitted or burned contacts, or an outdoor unit that will not start at all even though the thermostat is calling for cool.

Specifications

Spec	Value
OEM Part Number	1172472
Part Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Poles	1 (Single Pole)
Contact Rating	30 Amps
Coil Voltage	24V
Features	Integrated shunt
Fits Model	WCA4304GKA100

Compatibility

This contactor is a direct-fit OEM replacement for the ICP / Tempstar / Heil WCA4304GKA100 air conditioning condensing unit. The 1172472 contactor is a shared service part used across a range of ICP-family residential split-system condensers, so always confirm your existing contactor matches a single-pole 30A 24V configuration before ordering.

Installation Guide

Safety First - Disconnect power at the outdoor disconnect and the breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access - Remove the service panel from the condensing unit to expose the control compartment.
Document - Photograph all wire connections before disconnecting anything.
Remove - Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from the mounting bracket.
Install - Mount the new contactor, then reconnect each wire exactly per your photo, confirming the coil wires land on the 24V terminals.
Test - Restore power and call for cooling; verify the contactor pulls in cleanly and the compressor and fan start.

Signs You Need a Replacement

Loud buzzing, humming, or chattering from the outdoor unit
Compressor will not start even though the thermostat is calling for cool
Contacts are pitted, burned, or welded shut so the unit will not shut off
Visible arcing, melted plastic, or a burnt-electrical smell at the contactor

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 WCA4304GKA100 ...

$38.94

Frequently Asked Questions

Does this Contactor fit my ICP WCA4304GKA100 - 1-Pole 30A 24V Coil with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA4304GKA100 - 1-Pole 30A 24V Coil with Shunt | 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 WCA4304GKA100 - 1-Pole 30A 24V Coil with Shunt | 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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