What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA5424GKA100 — 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 WCA5424GKA100 — 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 1-Pole 30A Contactor for WCA5424GKA100 — 24V Coil with Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCA5424GKA100 — 24V Coil with Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 33.80 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This is the OEM definite-purpose contactor (part number 1172472) for the ICP/Tempstar/Heil WCA5424GKA100 condensing unit. The contactor is the electrically-controlled switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. This 1-pole unit carries a 30-amp rating with a 24-volt control coil and includes an integrated shunt for reliable line interruption. When the coil receives 24V from the control circuit, the magnetic field pulls the contacts closed and sends line voltage to the compressor; when the call ends, a spring opens the contacts. Common failure symptoms include pitted or welded contacts, a buzzing or chattering coil, a unit that won't start, or a condenser that keeps running after the thermostat is satisfied.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor, 1-Pole
Brand	ICP / Tempstar / Heil
Contact Rating	30 Amps
Coil Voltage	24V
Features	With Shunt

Compatibility

Designed as a direct-fit replacement for the ICP/Tempstar/Heil WCA5424GKA100 air conditioning condensing unit. Also commonly used across the WCA5 series of ICP-family condensers. Always confirm the coil voltage (24V) and pole count 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 to expose the electrical compartment.
Document — Photograph all wire positions before disconnecting anything.
Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power and confirm the contactor pulls in on a cooling call and the compressor and fan start.

Signs You Need a Replacement

Loud buzzing, humming, or chattering from the contactor coil
Burned, pitted, or welded contacts
Condenser fails to start on a cooling call
Unit keeps running after the thermostat is satisfied (stuck contacts)

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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 1-Pole 30A Contactor for WCA...

$33.80

Frequently Asked Questions

Does this Contactor fit my ICP WCA5424GKA100 — 24V Coil with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA5424GKA100 — 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 WCA5424GKA100 — 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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