What amp contactor do I need for my ICP system?

The correct replacement for ICP model RHS181H0CA0AAAA — Compressor Control | 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 RHS181H0CA0AAAA — Compressor Control | 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 2-Pole 30A Contactor 24V Coil for RHS181H0CA0AAAA — Compressor Control | Ships Today

Name: ICP 2-Pole 30A Contactor 24V Coil for RHS181H0CA0AAAA — Compressor Control | Ships Today
Brand: ICP
SKU: 1171554
Price: 35.04 USD
Availability: InStock

SKU: 1171554 Brand: ICP

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Overview

This OEM 2-pole 30-amp contactor with a 24V coil is the main switching relay for the ICP / Tempstar / Heil RHS181H0CA0AAAA heat pump. When the thermostat calls, the 24V coil pulls the contacts closed and sends line voltage to the compressor and condenser fan motor. Over thousands of cycles the silver contacts pit and burn, leading to a chattering contactor, welded contacts that won't drop out, or a unit that won't start at all. This OEM-spec contactor (related part 1171554; 3-pole 40A 1172449 also available) restores reliable, clean switching.

Specifications

Spec	Value
OEM Part Numbers	1171554 (2P 30A 24V), 1172449 (3P 40A 24V)
Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Poles	2
Contact Rating	30 Amps
Coil Voltage	24V

Compatibility

Designed for the ICP-family RHS181H0CA0AAAA 1.5-ton heat pump and matching Tempstar, Heil, Comfortmaker, and Arcoaire units. Confirm pole count, contact amperage, and coil voltage against your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
Access — Remove the condenser service panel to expose the contactor.
Document — Photograph every line, load, and 24V coil lead before disconnecting.
Remove — Transfer the leads one at a time or label them, then unscrew the old contactor from its bracket.
Install — Mount the new contactor, land line voltage on L1/L2, load on T1/T2, and the 24V leads on the coil terminals per your photo.
Test — Restore power and confirm the contactor pulls in cleanly on a thermostat call and drops out fully when satisfied.

Signs You Need a Replacement

Loud buzzing or chattering from the contactor
Pitted, burnt, or welded contacts
Compressor and fan won't start on a cooling call
Unit won't shut off because contacts are stuck closed

Shipping & Returns

Ships same day on orders placed before 3 PM CST. 30-day returns on unused parts. 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 2-Pole 30A Contactor 24V Coi...

$35.04

Frequently Asked Questions

Does this Contactor fit my ICP RHS181H0CA0AAAA — Compressor Control | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RHS181H0CA0AAAA — Compressor Control | 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 RHS181H0CA0AAAA — Compressor Control | 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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