What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS102LTBA0AAA — OEM 24V Coil 1178074 | 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 RGS102LTBA0AAA — OEM 24V Coil 1178074 | 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 for RGS102LTBA0AAA — OEM 24V Coil 1178074 | Ships Today

Name: ICP 2-Pole 30A Contactor for RGS102LTBA0AAA — OEM 24V Coil 1178074 | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 34.00 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

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Overview

This is a genuine OEM 2-pole 30-amp contactor with a 24V coil (part number 1178074) for the ICP Tempstar Heil RGS102LTBA0AAA system. The contactor is the high-current switch that energizes the compressor and condenser fan motor when the thermostat calls for cooling. The 24-volt control coil pulls in two sets of 30-amp line-voltage contacts to start and stop the outdoor unit. As one of the most frequently failing components in a condensing unit, a worn contactor causes hard starts, chattering, or a unit that will not run at all. Symptoms include the outdoor unit not starting on a cooling call, buzzing or humming from the contactor, or contacts that weld closed and keep the compressor running. Replacing it restores reliable, safe switching of the compressor and fan.

Specifications

Spec	Value
Part Number	1178074
Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Poles	2-Pole
Contact Rating	30A
Coil Voltage	24V
Fits Model	RGS102LTBA0AAA
Fitment	OEM Direct Replacement

Compatibility

This 2-pole 30A 24V contactor is a direct OEM replacement for the ICP Tempstar Heil RGS102LTBA0AAA and equivalent ICP-family condensing units (Tempstar, Heil, Comfortmaker, Arcoaire) using a matching 30A definite-purpose contactor with a 24V coil. Confirm part number 1178074, pole count, amp rating, and coil voltage against your existing contactor before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage across the contactor terminals with a multimeter.
Access — Remove the condensing unit's electrical-panel cover to expose the contactor.
Document — Photograph all line, load, and 24V coil wiring before disconnecting anything.
Remove — Disconnect the wiring, remove the mounting screws, and lift out the old contactor.
Install — Mount the new 1178074 contactor, transfer each wire to the identical terminal per your photo, and confirm the coil leads are connected correctly.
Test — Restore power, initiate a cooling call, and confirm the contactor pulls in cleanly and the compressor and fan start without chatter.

Signs You Need a Replacement

Outdoor unit does not start on a thermostat cooling call.
Loud buzzing or humming coming from the contactor.
Pitted, burnt, or welded contacts visible on inspection.
Compressor keeps running because the contacts stick 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 Contactor for RGS...

$34.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS102LTBA0AAA — OEM 24V Coil 1178074 | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS102LTBA0AAA — OEM 24V Coil 1178074 | 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 RGS102LTBA0AAA — OEM 24V Coil 1178074 | 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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