What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS120SFCB0AAA — Definite Purpose | 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 RGS120SFCB0AAA — Definite Purpose | 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 RGS120SFCB0AAA — Definite Purpose | Ships Today

Name: ICP 2-Pole 30A 24V Contactor for RGS120SFCB0AAA — Definite Purpose | Ships Today
Brand: ICP
SKU: 1178074
Price: 42.90 USD
Availability: InStock

SKU: 1178074 Brand: ICP

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Overview

This genuine OEM 2-pole, 30-amp definite purpose contactor, part number 1178074, has a 24-volt coil and is used in the ICP / Tempstar / Heil RGS120SFCB0AAA system to switch line-voltage power to the compressor and condenser fan motor. When the thermostat calls for cooling, the 24V coil pulls the contacts closed and energizes the outdoor unit. Contactors wear out from millions of switching cycles, contact pitting, and coil failure. A failed contactor is one of the most common reasons an outdoor unit will not start, hums without engaging, or runs even after the thermostat is satisfied.

Specifications

Spec	Value
Part Number	1178074
Type	Definite Purpose Contactor
Poles	2 (Double Pole)
Contact Rating	30 Amps
Coil Voltage	24 VAC
Brand	ICP / Tempstar / Heil
Fitment	OEM

Compatibility

Built for the ICP / Tempstar / Heil RGS120SFCB0AAA and widely interchangeable on ICP-family condensing units that use a 2-pole 30A contactor with a 24V coil. Match poles, amp rating, and coil voltage to your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condensing unit electrical access panel.
Document — Photograph every wire on the line, load, and coil terminals before disconnecting.
Remove — Transfer wires one at a time, then unscrew the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire exactly per your photo.
Test — Restore power, call for cooling, and confirm the contactor pulls in and the compressor and fan start.

Signs You Need a Replacement

Outdoor unit hums but compressor/fan will not start.
Burnt, pitted, or welded contacts.
Unit continues running after the thermostat is satisfied (stuck contacts).
Chattering or buzzing from the contactor coil.

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...

$42.90

Frequently Asked Questions

Does this Contactor fit my ICP RGS120SFCB0AAA — Definite Purpose | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS120SFCB0AAA — Definite Purpose | 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 RGS120SFCB0AAA — Definite Purpose | 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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