What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH4424GKB100 — 24V Coil | 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 WCH4424GKB100 — 24V Coil | 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 WCH4424GKB100 — 24V Coil | Ships Today

Name: ICP 1-Pole 30A Contactor for WCH4424GKB100 — 24V Coil | Ships Today
Brand: ICP
SKU: 1172472
Price: 32.44 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This is a genuine OEM single-pole definite purpose contactor (part #1172472) for the ICP/Tempstar/Heil WCH4424GKB100 heat pump condensing unit. Rated for 30 amps with a 24-volt control coil and an integrated shunt, the contactor is the high-voltage switch that energizes the compressor and outdoor fan motor whenever the thermostat calls for cooling or heating. Each time the system cycles, the 24V coil pulls the contacts closed; over thousands of cycles the contacts pit, burn, and stick. A failed contactor is one of the most common reasons an outdoor unit hums but won't start, runs continuously, or trips the breaker.

Specifications

Spec	Value
Part Number	1172472
Type	1-Pole Definite Purpose Contactor w/ Shunt
Brand	ICP / Tempstar / Heil
Contact Rating	30 Amps
Coil Voltage	24V
Poles	1
Fitment	OEM

Compatibility

Designed as the factory contactor for the ICP/Tempstar/Heil WCH4424GKB100 heat pump and is interchangeable across many ICP-family condensers and heat pumps that use a 30A, 24V single-pole contactor. Always confirm your existing contactor's amp and coil-voltage rating before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser service panel.
Document — Photograph all wiring before disconnecting anything.
Remove — Note the line, load, and 24V coil terminals, transfer wires one at a time, and unscrew the old contactor from its bracket.
Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power and confirm the contacts pull in and the compressor/fan start on a call for cooling.

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor/fan won't start.
Visibly pitted, burned, or welded (stuck-closed) contacts.
Unit runs nonstop and won't shut off on satisfied thermostat.
Chattering or clicking from the contactor when cycling.

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 1-Pole 30A Contactor for WCH...

$32.44

Frequently Asked Questions

Does this Contactor fit my ICP WCH4424GKB100 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH4424GKB100 — 24V Coil | 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 WCH4424GKB100 — 24V Coil | 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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