What amp contactor do I need for my ICP system?

The correct replacement for ICP model RHS120H0CA0AAA — 30A/40A 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 RHS120H0CA0AAA — 30A/40A 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 2-Pole Contactor for RHS120H0CA0AAA — 30A/40A 24V Coil | Ships Today

Name: ICP 2-Pole Contactor for RHS120H0CA0AAA — 30A/40A 24V Coil | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 29.95 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

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Overview

This OEM 2-pole definite purpose contactor is the switching relay that powers the compressor and outdoor fan motor in your ICP RHS120H0CA0AAA heat pump. When the thermostat calls for cooling or heating, the 24V control coil energizes and pulls the contacts closed, sending line voltage to the compressor. Replaces ICP part numbers 1178074 (30A) and 1178211 (40A). A failing contactor is one of the most common no-cool / no-heat callbacks — pitted or welded contacts, a chattering coil, or burned terminals all point to replacement. This part carries a 24V coil and is rated for 30A or 40A per pole depending on the option ordered.

Specifications

Spec	Value
OEM Part Numbers	1178074, 1178211
Type	2-Pole Definite Purpose Contactor
Brand	ICP (Heil / Tempstar / Comfortmaker)
Coil Voltage	24V
Contact Rating	30A (1178074) / 40A (1178211)
Poles	2
Fitment	OEM

Compatibility

Engineered for the ICP RHS120H0CA0AAA heat pump and shared across many Heil, Tempstar, Comfortmaker, and Arcoaire outdoor units that use a 24V-coil 2-pole contactor. Confirm your existing coil voltage (24V) and amp rating before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter across the contactor terminals.
Access — Remove the outdoor unit service/control panel to expose the contactor.
Document — Photograph every wire and terminal position before disconnecting anything.
Remove — Transfer line and load wires one at a time, then unscrew the old contactor from its mounting bracket.
Install — Mount the new contactor, reconnect line, load, and 24V coil leads exactly per your photo.
Test — Restore power and confirm the contacts pull in on a thermostat call and the compressor/fan energize.

Signs You Need a Replacement

Outdoor unit hums but compressor and fan won't start.
Pitted, burned, or welded contacts that stay closed.
Loud chattering or buzzing from the contactor.
Intermittent cooling/heating or tripped breakers.

Shipping & Returns

Ships same day on orders placed 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 2-Pole Contactor for RHS120H...

$29.95

Frequently Asked Questions

Does this Contactor fit my ICP RHS120H0CA0AAA — 30A/40A 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RHS120H0CA0AAA — 30A/40A 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 RHS120H0CA0AAA — 30A/40A 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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