What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS101HRAA0AAAA — OEM 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 RGS101HRAA0AAAA — OEM 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 Contactor 30A/40A 24V for RGS101HRAA0AAAA — OEM 1178074 | Ships Today

Name: ICP 2-Pole Contactor 30A/40A 24V for RGS101HRAA0AAAA — OEM 1178074 | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 32.00 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

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Overview

This genuine OEM 2-pole contactor for the ICP / Tempstar / Heil RGS101HRAA0AAAA is the heavy-duty relay that switches line voltage to the compressor and condenser fan motor. A 24V signal from the thermostat energizes the coil, pulling the contacts closed to start the cooling cycle. Available as the 30-amp version (part 1178074) and the 40-amp version (part 1178211), both with a 24-volt coil. Contactors are a high-wear item—every cooling call cycles the contacts, and over time they pit, burn, or weld. A failing contactor is one of the most common reasons an outdoor unit hums but won't start, or won't shut off.

Specifications

Spec	Value
Part Numbers	1178074 (30A), 1178211 (40A)
Type	2-Pole Definite-Purpose Contactor
Brand	ICP / Tempstar / Heil
Contact Rating	30A / 40A
Coil Voltage	24V
Poles	2
Fits Model	RGS101HRAA0AAAA

Compatibility

Fits the ICP RGS101HRAA0AAAA and related ICP/Tempstar/Heil/Comfortmaker condensing units that use a 2-pole 24V contactor. Match your amp rating (30A or 40A) and coil voltage to the unit you are servicing—confirm against the existing contactor or the unit data plate.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect. Verify zero voltage with a multimeter across the line terminals.
Access — Remove the condensing unit electrical access panel.
Document — Photograph every wire on the contactor before disconnecting.
Remove — Label and remove the line, load, and 24V coil leads, then unscrew the old contactor.
Install — Mount the new contactor and reconnect each wire exactly per your photo.
Test — Restore power and confirm the contacts pull in on a cooling call and drop out when satisfied.

Signs You Need a Replacement

Compressor/fan hums but doesn't start (welded or pitted contacts)
Buzzing or chattering at the contactor
Burnt, melted, or corroded contact points
Unit won't shut off when the thermostat is satisfied

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 Contactor 30A/40A 24V...

$32.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS101HRAA0AAAA — OEM 1178074 | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS101HRAA0AAAA — OEM 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 RGS101HRAA0AAAA — OEM 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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