What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA5184GKA100 — 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 WCA5184GKA100 — 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 Single-Pole 30A Contactor for WCA5184GKA100 — 24V Coil w/ Shunt | Ships Today

Name: ICP Single-Pole 30A Contactor for WCA5184GKA100 — 24V Coil w/ 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 electrical switch that energizes the compressor and condenser fan motor in your ICP / Tempstar / Heil WCA5184GKA100 condensing unit. When the thermostat calls for cooling, the 24-volt coil pulls in the main contacts, delivering line voltage to the outdoor components. Rated for 30 amps and equipped with a shunt, it safely handles the full inductive load of the system. Contactors wear because their contacts arc on every open and close cycle. Symptoms of failure include pitted or welded contacts, a buzzing or chattering coil, an outdoor unit that won't start, or a condenser that runs and won't shut off. A new contactor restores dependable starts and protects the compressor from chatter and voltage-drop damage.

Specifications

Spec	Value
Part Number	1172472
Type	Single-Pole (1P) Definite Purpose Contactor with Shunt
Brand	ICP / Tempstar / Heil
Contact Rating	30 Amps
Coil Voltage	24 VAC
Poles	1
Fit	OEM Replacement

Compatibility

Direct OEM fit for the ICP / Tempstar / Heil model WCA5184GKA100 condensing unit. This is the factory-specified contactor for that system and a correct replacement across many ICP-family air conditioners and heat pumps originally built with part 1172472. Confirm your existing contactor is a 1-pole, 30A unit with a 24V coil 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 service panel to expose the electrical compartment.
Document — Photograph all wire positions before disconnecting anything.
Remove — Note the line, load, and 24V coil leads, disconnect them, then unscrew and remove the old contactor.
Install — Mount the new contactor and reconnect every wire exactly as shown in your photo.
Test — Restore power and start a cooling call; confirm the coil pulls in cleanly and the compressor and fan run.

Signs You Need a Replacement

Outdoor unit buzzes but the compressor won't engage.
Pitted, burned, or welded contacts.
Condenser runs continuously and won't shut off.
Loud chattering from the contactor coil.

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day hassle-free 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 Single-Pole 30A Contactor fo...

$42.84

Frequently Asked Questions

Does this Contactor fit my ICP WCA5184GKA100 — 24V Coil w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA5184GKA100 — 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 WCA5184GKA100 — 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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