What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA3182AKN300 — 24V Coil w/ 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 WCA3182AKN300 — 24V Coil w/ 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 WCA3182AKN300 — 24V Coil w/ Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCA3182AKN300 — 24V Coil w/ Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 35.10 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 WCA3182AKN300 condensing unit. The contactor is the electrically operated switch that closes the high-voltage circuit to your compressor and condenser fan motor whenever the 24V control signal from the thermostat calls for cooling. This unit is rated for 30 amps with a 24-volt coil and includes an integrated shunt. When the coil energizes, the magnetic field pulls the contacts closed; when the call for cooling ends, the spring returns the contacts open. Failure symptoms include a compressor and condenser fan that will not start, chattering or buzzing at the contactor, pitted or welded contacts that keep the unit running continuously, and visible arcing or burnt terminals.

Specifications

Spec	Value
Part Number	1172472
Type	Single-Pole (1P) Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Contact Rating	30 Amps
Coil Voltage	24 VAC
Poles	1
Features	Includes Shunt
Fits Model	WCA3182AKN300

Compatibility

Designed as a direct OEM replacement for the ICP, Tempstar, Heil, and Comfortmaker WCA3182AKN300 air conditioning condensing unit. Single-pole 30A 24V contactors of this footprint are also commonly used across many residential split-system condensers, but always verify your existing contactor's amp rating, coil voltage, and pole count before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and the breaker. Verify zero voltage at the contactor terminals with a multimeter before touching any wiring.
Access — Remove the service panel on the condensing unit to expose the contactor and control wiring.
Document — Take a clear photo of every wire connection before disconnecting anything.
Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from its mounting bracket.
Install — Mount the new contactor, then reconnect each wire exactly as shown in your photo, ensuring the 24V leads land on the coil terminals.
Test — Restore power and place a call for cooling. Confirm the contactor pulls in cleanly and the compressor and fan start.

Signs You Need a Replacement

Compressor and condenser fan fail to start on a cooling call
Loud buzzing, humming, or chattering from the contactor
Pitted, burnt, or welded contacts that keep the unit running
Visible arcing or melted 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 1-Pole 30A Contactor for WCA...

$35.10

Frequently Asked Questions

Does this Contactor fit my ICP WCA3182AKN300 — 24V Coil w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA3182AKN300 — 24V Coil w/ 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 WCA3182AKN300 — 24V Coil w/ 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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