What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS120LFAB0AGAA — Definite Purpose Contactor | 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 RGS120LFAB0AGAA — Definite Purpose Contactor | 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 24V Contactor for RGS120LFAB0AGAA — Definite Purpose Contactor | Ships Today

Name: ICP 2-Pole 30A 24V Contactor for RGS120LFAB0AGAA — Definite Purpose Contactor | Ships Today
Brand: ICP
SKU: 1178074
Price: 33.80 USD
Availability: InStock

SKU: 1178074 Brand: ICP

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Overview

This OEM 2-pole 30-amp definite purpose contactor (part #1178074) has a 24-volt coil and is used in the ICP / Tempstar / Heil RGS120LFAB0AGAA system to switch high-voltage power to the compressor and/or condenser fan. When the thermostat calls for cooling, the 24V coil pulls the contacts closed and energizes the load. Over time the silver contacts pit, burn, and weld, or the coil opens — leaving you with a unit that won't start, chatters, or runs continuously. A 30A 2-pole contactor with a 24V coil is the standard replacement for this rating and restores clean, reliable switching.

Specifications

Spec	Value
Part Number	1178074
Type	Definite purpose contactor
Brand	ICP / Tempstar / Heil
Poles	2-pole
Contact Rating	30 Amps
Coil Voltage	24 VAC
Fit	OEM

Compatibility

Fits the ICP / Tempstar / Heil RGS120LFAB0AGAA and other Carrier-family condensing units calling for a 2-pole, 30A, 24V-coil contactor. Verify pole count, contact amperage, and 24V coil against your old part before installing.

Installation Guide

Safety First — Disconnect power at the disconnect/breaker and verify zero voltage with a multimeter on both line legs.
Access — Remove the condensing unit's electrical access panel.
Document — Photograph every line, load, and 24V coil wire before disconnecting.
Remove — Transfer wires one at a time or label them, then unscrew the old contactor from its mounting.
Install — Mount the new contactor, land the line/load conductors and the two 24V coil leads exactly per your photo, and torque terminals.
Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly with no chatter and the compressor/fan energize.

Signs You Need a Replacement

Pitted, burnt, or welded contacts
Loud chattering or buzzing when the coil energizes
Compressor/fan won't start even with a 24V signal at the coil
Unit won't shut off because contacts are stuck 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 2-Pole 30A 24V Contactor for...

$33.80

Frequently Asked Questions

Does this Contactor fit my ICP RGS120LFAB0AGAA — Definite Purpose Contactor | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS120LFAB0AGAA — Definite Purpose Contactor | 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 RGS120LFAB0AGAA — Definite Purpose Contactor | 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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