What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA3424GKB2 — 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 WCA3424GKB2 — 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 WCA3424GKB2 — 24V Coil with Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCA3424GKB2 — 24V Coil with Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 41.60 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This is the genuine OEM definite-purpose contactor (part number 1172472) for the ICP Tempstar Heil WCA3424GKB2 condensing unit. It is a 1-pole, 30-amp contactor with a 24-volt coil and an integrated shunt. The contactor acts as the electrically controlled switch for the outdoor unit: when the 24V thermostat circuit energizes the coil, the contacts close and feed line voltage to the compressor and condenser fan; when cooling demand ends, the coil de-energizes and the contacts open. Repeated cycling slowly wears the contacts and coil, making the contactor one of the most frequently replaced components in a condensing unit. Watch for a buzzing unit that will not start, a compressor that runs continuously, weak or chattering coil pull-in, and visible arcing or burned terminals.

Specifications

Spec	Value
Part Number	1172472
Type	Definite-purpose contactor, 1-pole
Brand	ICP (Tempstar / Heil)
Contact Rating	30 Amps
Coil Voltage	24V
Poles	1
Feature	Includes shunt

Compatibility

Built as a direct OEM replacement for the ICP Tempstar Heil WCA3424GKB2 air conditioner condensing unit. The same 1172472 contactor fits many other ICP-family outdoor units (Tempstar, Heil, Comfortmaker) calling for a 1-pole 30A 24V contactor with shunt. Confirm pole count, amperage, and coil voltage against your unit's wiring label before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter at the contactor terminals.
Access — Remove the condenser service panel to reach the electrical compartment.
Document — Photograph all wiring before disconnecting any leads.
Remove — Mark the line, load, and 24V coil wires, disconnect them, and unscrew the failed contactor from its bracket.
Install — Mount the new contactor, move each wire to the matching terminal per your photo, and confirm the shunt is connected.
Test — Restore power, start a cooling cycle, and confirm the contacts pull in and the compressor and fan start.

Signs You Need a Replacement

Humming or buzzing unit that fails to start.
Compressor that never shuts off due to welded contacts.
Burned, pitted, or corroded contacts.
Intermittent cooling or a chattering coil.

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...

$41.60

Frequently Asked Questions

Does this Contactor fit my ICP WCA3424GKB2 — 24V Coil with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA3424GKB2 — 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 WCA3424GKB2 — 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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