What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA3184GKN200 — 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 WCA3184GKN200 — 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 WCA3184GKN200 — 24V Coil with Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCA3184GKN200 — 24V Coil with Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 42.84 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This OEM single-pole definite-purpose contactor (part number 1172472) is the central switching relay for ICP, Tempstar, and Heil WCA3184GKN200 condensing units. Rated at 30 amps with a 24-volt control coil and an integrated shunt, it energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. Powering the 24V coil pulls the contacts closed and delivers line voltage to the outdoor unit; ending the call releases the contacts and de-energizes the system. Because the contactor switches on every cooling cycle, its contacts are among the highest-wear parts in the condensing unit. Typical failure symptoms include pitted or welded contacts that keep the compressor running nonstop, a humming or chattering coil, and a unit that won't start because the contacts fail to close. Visible burning or arcing on the contact points signals that the contactor has reached the end of its service life.

Specifications

Spec	Value
OEM Part Number	1172472
Type	Definite-Purpose Contactor
Brand	ICP / Tempstar / Heil
Poles	1 (Single Pole)
Contact Rating	30 Amps
Coil Voltage	24V
Features	Integrated Shunt
Fitment	OEM Direct Replacement

Compatibility

Engineered as a direct OEM replacement for the ICP / Tempstar / Heil WCA3184GKN200 condensing unit. This 1-pole 30A 24V contactor is also used in many ICP-family air conditioners and heat pumps originally built with part 1172472. Verify the amp rating, pole count, and coil voltage of your existing contactor before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage at the contactor terminals with a multimeter.
Access — Remove the condensing unit's service panel to expose the electrical compartment.
Document — Photograph all line, load, and 24V coil wires before disconnecting anything.
Remove — Label and disconnect the wires, then unscrew the old contactor from its mounting bracket.
Install — Mount the new contactor and reconnect each wire exactly as shown in your photo, matching line and load sides and the 24V coil terminals.
Test — Restore power, call for cooling, and confirm the contacts pull in and the compressor and fan energize.

Signs You Need a Replacement

Compressor runs continuously or won't shut off (welded contacts)
Loud buzzing, humming, or chattering from the contactor
Outdoor unit won't start even though the thermostat calls for cooling
Visible pitting, burning, or arcing on the contact points

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...

$42.84

Frequently Asked Questions

Does this Contactor fit my ICP WCA3184GKN200 — 24V Coil with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA3184GKN200 — 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 WCA3184GKN200 — 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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