What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH3424GKB1 — 24V Coil with 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 WCH3424GKB1 — 24V Coil with 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 WCH3424GKB1 — 24V Coil with Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCH3424GKB1 — 24V Coil with 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 1-pole 30 amp definite-purpose contactor with a 24V coil and integrated shunt (OEM part 1172472) for the ICP / Tempstar / Heil WCH3424GKB1 heat pump. The contactor is the electrically operated switch that sends line voltage to the compressor and condenser fan motor when the thermostat calls for cooling or heating. The 24V control coil pulls the contacts closed; the built-in shunt provides the secondary leg path. A pitted, welded, or chattering contactor is one of the most frequent causes of a no-start or hard-start condenser.

Specifications

Spec	Value
Part Number	1172472
Type	Definite-Purpose Contactor, 1-Pole, w/ Shunt
Brand	ICP / Tempstar / Heil
Contact Rating	30 Amps
Poles	1
Coil Voltage	24V AC
Application	Heat Pump Compressor / Condenser Fan

Compatibility

Direct-fit replacement for the ICP Tempstar Heil WCH3424GKB1 heat pump and matching WCH3424 series condensing units. Verify the 30A rating, single-pole configuration, and 24V coil against your existing contactor before installing.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, verify zero voltage with a multimeter.
Access — Remove the condensing unit service/electrical panel.
Document — Photograph every line, load, and 24V coil wire before disconnecting.
Remove — Label and disconnect the wires, unscrew the contactor from the bracket.
Install — Mount the new contactor and reconnect each wire to its matching terminal per your photo.
Test — Restore power and call for cooling; confirm the contacts pull in and the compressor/fan energize.

Signs You Need a Replacement

Condenser will not start even though the thermostat is calling.
Buzzing, humming, or chattering from the contactor.
Pitted, burnt, or welded-together contacts.
Compressor runs continuously and won't shut off (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...

$35.04

Frequently Asked Questions

Does this Contactor fit my ICP WCH3424GKB1 — 24V Coil with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH3424GKB1 — 24V Coil with 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 WCH3424GKB1 — 24V Coil with 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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