ICP 2-Pole 30A 24V Contactor for RGS090LTAA0AGAA — OEM 1178074 | Ships Today

Overview

This OEM 2-pole, 30-amp contactor (part number 1178074) with a 24-volt coil is the switching relay that energizes the high-voltage loads in the ICP/Tempstar/Heil RGS090LTAA0AGAA system. When the thermostat calls, the 24V coil pulls the contacts closed and sends line voltage to the load; when the call ends, the contacts open. Contactors are a high-wear part — the contacts arc on every cycle and eventually pit, weld, or fail to pull in. Common failure symptoms include a unit that won't start, chattering or buzzing at the contactor, contacts that stay welded closed (unit won't shut off), and burnt or melted terminal posts.

Specifications

Compatibility

Direct fit for the ICP/Tempstar/Heil RGS090LTAA0AGAA and shared-platform RGS090 series equipment. Verify pole count, amperage, and coil voltage against the part you are removing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and verify zero voltage with a multimeter.
2. Access — Remove the electrical service panel.
3. Document — Photograph all wire positions before disconnecting.
4. Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from its mount.
5. Install — Mount the new contactor and reconnect each wire exactly per your photo.
6. Test — Restore power, initiate a call for cooling, and confirm the contactor pulls in cleanly and the unit runs.

Signs You Need a Replacement

• Unit won't start or starts intermittently
• Loud humming, buzzing, or chattering at the contactor
• Contacts welded closed so the unit won't turn off
• Pitted, burnt, or melted contact terminals

Shipping & Returns

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