What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCH3484GKA2 — 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 WCH3484GKA2 — 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 WCH3484GKA2 — 24V Coil w/ Shunt | Ships Today

Name: ICP 1-Pole 30A Contactor for WCH3484GKA2 — 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 contactor (part #1172472) is the main switching relay for the ICP/Tempstar/Heil WCH3484GKA2 heat pump condensing unit. Rated at 30 amps with a 24-volt control coil and integrated shunt, it routes line voltage to the compressor and outdoor fan whenever the thermostat calls. The coil closes the contacts to start the compressor and opens them when the call ends. Pitted, burned, or welded contacts are among the most common no-cool/no-heat failures — a humming unit that won't start, or a fan running without the compressor, typically points to a failed contactor.

Specifications

Spec	Value
Part Number	1172472
Type	Single-Pole (1P) Definite Purpose Contactor
Brand	ICP (Tempstar / Heil)
Contact Rating	30 Amps
Coil Voltage	24V
Poles	1
Features	Integrated shunt
Fitment	OEM direct replacement

Compatibility

Direct-fit replacement for the ICP WCH3484GKA2 heat pump and related WCH3484 series condensing units sold under the ICP, Tempstar, Heil, and Comfortmaker brands. Always confirm coil voltage and amp rating against the unit's wiring diagram before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker. Verify zero voltage at the contactor terminals with a multimeter before touching wiring.
Access — Remove the condenser service panel to expose the control compartment.
Document — Photograph all line, load, and 24V coil connections before disconnecting.
Remove — Label and disconnect the line and load wires, then the coil leads, and unscrew the old contactor.
Install — Mount the new contactor and reconnect each wire exactly per your photo.
Test — Restore power, call for cooling, and confirm the contactor pulls in and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit hums or buzzes but won't start.
Pitted, burned, or welded contacts.
Compressor runs continuously and won't shut off (stuck closed).
Chattering or intermittent pull-in when energized.

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...

$42.84

Frequently Asked Questions

Does this Contactor fit my ICP WCH3484GKA2 — 24V Coil w/ Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCH3484GKA2 — 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 WCH3484GKA2 — 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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