What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA3422AKN300 — 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 WCA3422AKN300 — 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 WCA3422AKN300 — 24V Coil w/ Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCA3422AKN300 — 24V Coil w/ Shunt | Ships Today
Brand: ICP
SKU: 1172472
Price: 42.84 USD
Availability: InStock

SKU: 1172472 Brand: ICP

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Overview

This OEM single-pole definite-purpose contactor (part number 1172472) is the switching relay that energizes the compressor and condenser fan in your ICP WCA3422AKN300 condensing unit. With a 30-amp rating, a 24-volt control coil, and an integrated shunt, it makes and breaks the high-voltage circuit each cooling cycle. Because it switches under load thousands of times per season, the contactor wears: contacts pit and arc, the coil can fail to pull in, and welded contacts can leave the system running continuously. Installing a new 1172472 restores reliable switching and shields the compressor from low-voltage and short-cycle stress.

Specifications

Spec	Value
Part Number	1172472
Type	Single-Pole (1P) Definite Purpose Contactor w/ Shunt
Brand	ICP / Tempstar / Heil
Current Rating	30 Amps
Coil Voltage	24 VAC
Poles	1
Fit	OEM Replacement

Compatibility

Direct OEM replacement for the ICP/Tempstar/Heil WCA3422AKN300 condensing unit. The 1172472 contactor also fits many other ICP-family split-system air conditioners and heat pumps that call for a 1-pole 30A 24V contactor — always confirm against the part in your unit before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage at the contactor with a multimeter.
Access — Remove the condenser service/electrical panel.
Document — Photograph all line, load, and 24V coil wiring before disconnecting.
Remove — Label and disconnect the leads, then unscrew the old contactor from the bracket.
Install — Mount the new 1172472 contactor and reconnect each wire per your photo.
Test — Restore power, call for cooling, and confirm the contactor pulls in and the unit starts.

Signs You Need a Replacement

Humming or chattering at the outdoor unit on a cooling call.
Burned, pitted, or melted contacts.
Compressor fails to start with 24V present at the coil.
Unit runs nonstop from welded-closed contacts.

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 WCA...

$42.84

Frequently Asked Questions

Does this Contactor fit my ICP WCA3422AKN300 — 24V Coil w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA3422AKN300 — 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 WCA3422AKN300 — 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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