ICP 2-Pole 30A 24V Contactor for RGS120SEAB0AGAA — OEM 1178074 | Ships Today

Overview

This genuine OEM 2-pole, 30-amp contactor with a 24-volt coil — ICP part number 1178074 — is the main switching relay that energizes the compressor and condenser fan when the thermostat calls for cooling. The 24VAC control signal pulls in the contactor, closing both poles and sending line voltage to the load. Contactors are high-wear parts: every cooling cycle arcs the contacts a little, so over time they pit, weld, or chatter. A failed contactor is one of the most common no-cooling service calls — the unit hums but won't start, the contacts stick closed and the compressor runs continuously, or the coil burns open and nothing happens at all.

Specifications

Compatibility

Fits the ICP Tempstar Heil RGS120SEAB0AGAA and the broad range of ICP-family (International Comfort Products) Tempstar, Heil, Comfortmaker, and Arcoaire condensing units that use a 2-pole 30A 24V definite-purpose contactor. Match poles, amp rating, and coil voltage to your existing part before ordering.

Installation Guide

1. Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the condenser control-box panel.
3. Document — Photograph every line, load, and coil wire before disconnecting.
4. Remove — Transfer wires one at a time or unbolt the old contactor from its mounting feet.
5. Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
6. Test — Restore power, call for cooling, and confirm the contactor pulls in firmly with no chatter and the compressor starts.

Signs You Need a Replacement

• Unit hums but compressor and fan won't start
• Buzzing or chattering at the contactor on a cooling call
• Pitted, burned, or welded contacts that stick closed
• Compressor runs nonstop because contacts won't open

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.