ICP 2-Pole 30A 24V Contactor for RGS121LFBB0AAAA — OEM Definite Purpose | Ships Today

Overview

This is the genuine OEM 2-pole, 30 amp definite-purpose contactor (part 1178074) for the ICP / Tempstar / Heil RGS121LFBB0AAAA system. The contactor uses a 24-volt control coil to close two sets of line-voltage contacts, energizing the compressor and condenser fan whenever the thermostat calls for cooling. Over time the contacts pit and burn from arcing, and the coil weakens, causing chattering, dropped calls, welded contacts that won't release, or a unit that won't start at all. Replacing a worn contactor restores reliable switching and protects the more expensive compressor from low-voltage and short-cycling damage.

Specifications

Compatibility

Direct OEM fit for the ICP-built RGS121LFBB0AAAA and other Tempstar, Heil, and Comfortmaker units calling for a 2-pole 30A 24V contactor. Confirm pole count, amp rating, and 24V coil before installing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control/electrical panel cover.
3. Document — Photograph all line, load, and coil wiring before disconnecting.
4. Remove — Label and disconnect each wire, unscrew the old contactor from its mount.
5. Install — Mount the new contactor, transfer wires one at a time to matching terminals per your photo.
6. Test — Restore power, call for cooling, and verify the contacts pull in cleanly and the compressor/fan energize.

Signs You Need a Replacement

• Buzzing, humming, or chattering at the contactor
• Burned, pitted, or welded contacts
• Unit won't start or won't shut off (stuck contacts)
• Ants or debris fouling the contacts

Shipping & Returns

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