What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH4484GKB100 — 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 WCH4484GKB100 — 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 1-Pole 30A Contactor for WCH4484GKB100 — 30A 24V w/Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCH4484GKB100 — 30A 24V w/Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 41.60 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This 30 amp single-pole contactor with integral shunt (OEM part #1172472) is the main switching relay for the outdoor unit on your ICP WCH4484GKB100 heat pump. Its 24-volt control coil energizes on a thermostat call and pulls the line-voltage contacts closed to power the compressor and condenser fan motor. The built-in shunt provides the second-leg path on single-pole designs, keeping one leg continuously connected. Rated at 30 amps, it is sized for the inrush and run current of this condensing unit. Typical failure symptoms include a unit that hums but won't start, chattering at the contactor, pitted or welded contacts, and scorched terminals. Welded contacts can leave the compressor energized when it should be off, while an open coil leaves the outdoor unit completely dead.

Specifications

Spec	Value
Part Number	1172472
Type	Definite-Purpose Contactor w/Shunt
Brand	ICP
Amp Rating	30 A
Poles	1 (Single-Pole)
Coil Voltage	24 VAC
Fitment	OEM Replacement

Compatibility

Direct OEM replacement for the ICP / Tempstar / Heil WCH4484GKB100 heat pump condensing unit. Also fits many ICP-family outdoor units calling for a 30A single-pole, 24V-coil contactor with shunt. Confirm amp rating, pole count, and coil voltage against the failed part before installing.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser service panel to expose the control compartment.
Document — Photograph all wiring, including the shunt leg, before disconnecting.
Remove — Transfer the line, load, and coil wires one at a time, then 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 contactor pulls in and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit hums but won't start, or stays dead on a call.
Chattering or buzzing from the contactor.
Pitted, burnt, or welded contacts.
Compressor runs after the call ends (stuck closed).

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 WCH...

$41.60

Frequently Asked Questions

Does this Contactor fit my ICP WCH4484GKB100 — 30A 24V w/Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH4484GKB100 — 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 WCH4484GKB100 — 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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