What amp contactor do I need for my ICP system?

The correct replacement for ICP model WTH3422000RKA1 — 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 WTH3422000RKA1 — 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 1-Pole 40A Contactor for WTH3422000RKA1 — 24V Coil | Ships Today

Name: ICP 1-Pole 40A Contactor for WTH3422000RKA1 — 24V Coil | Ships Today
Brand: ICP
SKU: WTH3422000RKA1
Price: 37.70 USD
Availability: InStock

SKU: WTH3422000RKA1 Brand: ICP

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Overview

This is the OEM single-pole, 40-amp contactor with a 24-volt coil for the ICP/Heil/Tempstar WTH3422000RKA1 heat pump. The contactor is the electrically operated switch that sends line voltage to the compressor and condenser fan motor on a thermostat call. The 24V coil pulls the contacts closed; a spring opens them when the call ends. Arcing gradually pits, burns, and can weld the contacts, and the coil can fail open. A failed contactor leaves the outdoor unit dead, causes buzzing or chattering, or — with welded contacts — keeps the compressor running nonstop. Replacing this low-cost part restores reliable switching and protects the compressor.

Specifications

Spec	Value
OEM Part Number	1173690
Type	Definite Purpose Contactor
Brand	ICP / Heil / Tempstar / Comfortmaker
Poles	1
Contact Rating	40A
Coil Voltage	24V
Application	Compressor / Condenser Fan switching

Compatibility

Designed for the ICP-family WTH3422000RKA1 heat pump and related WTH-series outdoor units marketed under the Heil, Tempstar, and Comfortmaker brands. Verify pole count, amp rating, and 24V coil against your existing contactor before installing.

Installation Guide

Safety First — Shut off power at the disconnect and breaker, then confirm zero voltage with a multimeter.
Access — Remove the condenser electrical access panel.
Document — Photograph every wire and terminal position before disconnecting.
Remove — Label and transfer 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 on a call and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit is completely dead on a cooling or heating call.
Loud buzzing, humming, or chattering from the contactor.
Visibly pitted, blackened, or welded contacts.
Compressor runs continuously and will not shut off (welded 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 40A Contactor for WTH...

$37.70

Frequently Asked Questions

Does this Contactor fit my ICP WTH3422000RKA1 — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WTH3422000RKA1 — 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 WTH3422000RKA1 — 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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