What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH4184GKB100 — 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 WCH4184GKB100 — 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 WCH4184GKB100 — 24V Coil w/ Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCH4184GKB100 — 24V Coil w/ Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 35.04 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This is a genuine OEM single-pole definite purpose contactor (OEM #1172472) for the ICP/Heil/Tempstar WCH4184GKB100 heat pump. The contactor is the electromechanical switch that energizes the compressor and outdoor fan motor. When the thermostat calls for cooling or heating, 24 volts is applied to the contactor coil, pulling the contacts closed and sending line voltage to the compressor. This unit is rated at 30 amps with a 24V coil and includes an integrated shunt. A failed contactor is one of the most common reasons an outdoor unit goes completely dead or buzzes without starting.

Specifications

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

Compatibility

Engineered as the factory replacement for the ICP/Heil/Tempstar WCH4184GKB100 condensing unit. The 1-pole 30A 24V form factor is also used across many comparable ICP-family outdoor units — verify amp rating and coil voltage against your old part before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condensing unit service panel.
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 exactly per your photo.
Test — Restore power and confirm the contacts pull in and the compressor and fan start on a call for cooling.

Signs You Need a Replacement

Outdoor unit is silent and dead on a cooling/heating call
Loud buzzing or chattering from the contactor
Pitted, burned, or welded contacts visible on inspection
Compressor and fan won't shut off (contacts stuck closed)

Shipping & Returns

Ships same day on orders placed 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 WCH...

$35.04

Frequently Asked Questions

Does this Contactor fit my ICP WCH4184GKB100 — 24V Coil w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH4184GKB100 — 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 WCH4184GKB100 — 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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