What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS150HDCA0AAAA — OEM 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 RGS150HDCA0AAAA — OEM 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 Contactor 30A/40A 24V for RGS150HDCA0AAAA — OEM Definite Purpose | Ships Today

Name: ICP 2-Pole Contactor 30A/40A 24V for RGS150HDCA0AAAA — OEM Definite Purpose | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 34.00 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This OEM 2-pole definite purpose contactor with a 24-volt coil switches line power to the compressor and condenser fan motor on the ICP/Tempstar/Heil RGS150HDCA0AAAA unit. Two amperage ratings cover the application: 1178074 (2-pole, 30A) and 1178211 (2-pole, 40A). When the thermostat calls for cooling, the 24V coil pulls the contacts closed to energize the outdoor unit. Contactors fail from pitted, welded, or burned contacts and from open coils — symptoms include a unit that won't start, chattering or buzzing at the contactor, or a compressor and fan that won't shut off. Match the amperage rating of your existing contactor when ordering.

Specifications

Spec	Value
Part Number	1178074 (30A), 1178211 (40A)
Type	Definite Purpose Contactor
Poles	2-Pole
Coil Voltage	24V
Amperage	30A / 40A
Brand	ICP / Tempstar / Heil
Fit	OEM Direct Replacement
Fits Model	RGS150HDCA0AAAA

Compatibility

Direct-fit OEM contactor for the ICP/Tempstar/Heil RGS150HDCA0AAAA and related RGS150 series condensing units. Choose the 30A (1178074) or 40A (1178211) rating to match the contactor currently installed in your unit.

Installation Guide

Safety First — Disconnect power and verify zero voltage with a multimeter at the contactor terminals.
Access — Remove the unit's electrical service panel.
Document — Photograph all line, load, and 24V coil wire positions before disconnecting.
Remove — Label and disconnect the wires, then unscrew and remove the old contactor.
Install — Mount the new contactor and transfer each wire to the matching terminal per your photos.
Test — Restore power, call for cooling, and confirm the contacts pull in and the unit energizes normally.

Signs You Need a Replacement

Pitted, burned, or welded contacts
Buzzing, humming, or chattering at the contactor
Outdoor unit won't start on a cooling call
Compressor and fan won't shut off (stuck/welded contacts)

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 30A/40A 24V...

$34.00

Frequently Asked Questions

Does this Contactor fit my ICP RGS150HDCA0AAAA — OEM Definite Purpose | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS150HDCA0AAAA — OEM 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 RGS150HDCA0AAAA — OEM 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.

Menu