What amp contactor do I need for my ICP system?

The correct replacement for ICP model WPH4484000RKA1 — 24V Coil | 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 WPH4484000RKA1 — 24V Coil | 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 Single-Pole 40A Contactor for WPH4484000RKA1 — 24V Coil | Ships Today

Name: ICP Single-Pole 40A Contactor for WPH4484000RKA1 — 24V Coil | Ships Today
Brand: ICP
SKU: 1173690
Price: 38.94 USD
Availability: InStock

SKU: 1173690 Brand: ICP

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Overview

This genuine OEM single-pole contactor (part #1173690) is the high-voltage switch that energizes the compressor and condenser fan in your ICP/Tempstar/Heil WPH4484000RKA1 heat pump. When the thermostat calls for cooling or heating, the 24-volt coil pulls in the contactor, closing the 40-amp line-voltage contacts that power the outdoor unit. Pitted, burned, or buzzing contacts are one of the most common no-cool/no-heat failures: the contacts arc and weld shut or fail to close, leaving the compressor humming, the fan dead, or the unit running nonstop. Replacing this inexpensive part restores clean switching and protects the far more expensive compressor.

Specifications

Spec	Value
Part Number	1173690
Type	Definite Purpose Contactor, Single-Pole
Brand	ICP (Tempstar / Heil)
Contact Rating	40 Amps
Coil Voltage	24V
Poles	1

Compatibility

Direct OEM fit for the ICP/Tempstar/Heil WPH4484000RKA1 and other single-phase outdoor heat pumps and condensers using a 1-pole, 40A, 24V-coil contactor. Confirm coil voltage and amp rating against your existing part before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker; verify zero voltage with a multimeter at the contactor terminals.
Access — Remove the condenser unit's electrical access panel.
Document — Photograph all line and coil wiring before disconnecting.
Remove — Unfasten the mounting screws and transfer wires off the old contactor one at a time.
Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power, call for cooling, and confirm the contactor pulls in and the compressor/fan start.

Signs You Need a Replacement

Outdoor unit hums but compressor/fan won't start
Visible pitting, burning, or melted contacts
Loud chattering or buzzing from the contactor
Unit won't shut off (contacts welded 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 Single-Pole 40A Contactor fo...

$38.94

Frequently Asked Questions

Does this Contactor fit my ICP WPH4484000RKA1 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WPH4484000RKA1 — 24V Coil | 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 WPH4484000RKA1 — 24V Coil | 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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