What amp contactor do I need for my ICP system?

The correct replacement for ICP model RHS120S0BA0AAA — 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 RHS120S0BA0AAA — 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 Contactor 2-Pole 30A 24V for RHS120S0BA0AAA — Definite Purpose | Ships Today

Name: ICP Contactor 2-Pole 30A 24V for RHS120S0BA0AAA — Definite Purpose | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 27.95 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

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Overview

This is a genuine OEM 2-pole definite purpose contactor (part #1178074) for the ICP/Tempstar/Heil RHS120S0BA0AAA heat pump. The contactor is the electromechanical switch that energizes the compressor and outdoor fan motor whenever the thermostat calls for cooling or heating. Rated for 30 amps per pole with a 24-volt control coil, it switches the high-voltage load while being triggered safely by the low-voltage control circuit. A failed contactor is among the most common no-cool/no-heat service calls — contacts pit, burn, or weld shut from arcing, leaving the unit dead or unable to shut off.

Specifications

Spec	Value
Part Number	1178074
Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Poles	2
Contact Rating	30 Amps
Coil Voltage	24V

Compatibility

Engineered for the ICP RHS120S0BA0AAA heat pump and shared across many ICP-family condensing units and heat pumps (Heil, Tempstar, Comfortmaker, Arcoaire) using a 2-pole 30A definite purpose contactor with a 24V coil. Confirm the original part number and coil voltage before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter before touching any terminals.
Access — Remove the condensing unit's electrical service panel.
Document — Photograph every wire and terminal before disconnecting anything.
Remove — Note the line, load, and 24V coil wiring, unscrew the mounts, and lift out the old contactor.
Install — Mount the new contactor and transfer each wire to the matching terminal per your photo.
Test — Restore power and confirm the contactor pulls in on a call and drops out cleanly when satisfied.

Signs You Need a Replacement

Compressor and outdoor fan won't start despite a thermostat call
Loud buzzing, humming, or chattering from the contactor
Visibly pitted, burned, or melted contacts
Unit runs continuously and won't shut off (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 Contactor 2-Pole 30A 24V for...

$27.95

Frequently Asked Questions

Does this Contactor fit my ICP RHS120S0BA0AAA — Definite Purpose | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RHS120S0BA0AAA — 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 RHS120S0BA0AAA — 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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