ICP 40A Contactor for WCH4604GKB100 — 24V Coil | Ships Today

Overview

This genuine OEM 40A contactor (part number 1176763) is the high-voltage switch that powers the compressor and condenser fan motor on the ICP / Tempstar / Heil WCH4604GKB100 heat pump. When the thermostat calls for cooling or heating, the unit's 24V control circuit energizes the contactor coil, pulling the contacts closed and sending line voltage to the compressor. Contactors are a leading cause of no-cool and no-heat calls because their contacts pit, burn, and weld over thousands of cycles. Symptoms of a failing contactor include a humming or chattering sound, contacts that stick closed (unit runs constantly), or contacts that never close (unit is completely dead at the compressor).

Specifications

Compatibility

Designed for the ICP / Tempstar / Heil WCH4604GKB100 heat pump and compatible across the broader Tempstar, Heil, and Comfortmaker condensing unit line that uses a 40A, 24V-coil contactor. Verify amp rating, pole count, and coil voltage against the original 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 condensing unit service panel.
3. Document — Photograph every wire on the line, load, and coil terminals before disconnecting.
4. Remove — Unscrew the mounting screws and lift out the old contactor.
5. Install — Mount the new contactor and transfer wires one at a time to the matching terminals per your photo.
6. Test — Restore power and confirm the contacts pull in on a call for cooling.

Signs You Need a Replacement

• Loud humming, buzzing, or chattering at the contactor
• Compressor and fan won't start even with a 24V call
• Contacts visibly pitted, burned, or welded together
• Unit runs continuously and won't shut off

Shipping & Returns

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