What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH3424GKA1 — 1-Pole 30A 24V 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 WCH3424GKA1 — 1-Pole 30A 24V 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 Contactor for WCH3424GKA1 — 1-Pole 30A 24V w/ Shunt | Ships Today

Name: ICP Contactor for WCH3424GKA1 — 1-Pole 30A 24V w/ Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 37.64 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This OEM single-pole definite purpose contactor (part #1172472) is the primary switching relay for the ICP WCH3424GKA1 heat pump condensing unit. 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 or heating. When the coil receives 24V from the control circuit, the contacts close and pass line voltage to the outdoor unit. A failed contactor is one of the most common reasons an outdoor unit goes silent. Typical failure symptoms include pitted or welded contacts that cause the unit to run continuously, chattering caused by a weak coil, or no operation at all when the contacts fail to pull in.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor
Brand	ICP
Poles	1 (Single Pole)
Contact Rating	30 Amps
Coil Voltage	24V
Feature	Includes Shunt

Compatibility

Direct OEM fit for the ICP / Tempstar / Heil WCH3424GKA1 heat pump and other ICP-family condensing units using the same 30A 24V single-pole contactor. Always confirm against your unit's parts list.

Installation Guide

Safety First — Disconnect power at the breaker and pull the outdoor disconnect; verify zero voltage with a multimeter.
Access — Remove the condenser service panel.
Document — Photograph all line, load, and coil wiring before disconnecting.
Remove — Transfer wires one at a time; unscrew the old contactor from its bracket.
Install — Mount the new contactor, reconnect each wire per your photo, and confirm the 24V coil leads are landed.
Test — Restore power, call for cooling, and verify the contacts pull in and the compressor and fan energize.

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor and fan do not start.
Burned, pitted, or welded contacts visible on inspection.
Unit runs continuously and won't shut off (stuck closed).
Chattering or clicking caused by a weak or failed 24V coil.

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 Contactor for WCH3424GKA1 — ...

$37.64

Frequently Asked Questions

Does this Contactor fit my ICP WCH3424GKA1 — 1-Pole 30A 24V w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH3424GKA1 — 1-Pole 30A 24V 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 WCH3424GKA1 — 1-Pole 30A 24V 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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