ICP Contactor for WCA3422GKR301 — 1-Pole 30A 24V Coil w/ Shunt | Ships Today
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Overview
This is a genuine OEM single-pole definite purpose contactor (OEM part #1172472) for the ICP/Tempstar/Heil WCA3422GKR301 condensing unit. Rated at 30 amps with a 24-volt control coil and an integrated shunt, the contactor is the electromechanical switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. When the 24V coil is energized, the contacts close and pass line voltage to the outdoor unit; when the call ends, a spring opens the contacts. Over thousands of cycles the contacts pit, burn, or weld, and the coil can fail open — the most common reasons an outdoor unit hums, chatters, or refuses to start. Replacing a worn contactor restores reliable, clean switching and protects the compressor from low-voltage and chatter damage.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1172472 |
| Type | Definite Purpose Contactor, 1-Pole (Single-Pole) |
| Brand | ICP / Tempstar / Heil |
| Contact Rating | 30 Amps |
| Coil Voltage | 24 VAC |
| Poles | 1 |
| Special Feature | Integrated Shunt |
| Fitment | OEM Direct Replacement |
Compatibility
This contactor is the factory-specified switch for the ICP/Tempstar/Heil WCA3422GKR301 air conditioning condensing unit. The 1172472 is shared across many ICP-family 1.5–3 ton condensers and heat pumps using a single-pole 30A/24V contactor. Always confirm your existing contactor is 1-pole, 30A, with a 24V coil before installing.
Installation Guide
- Safety First — Disconnect power at the outdoor disconnect and the breaker, then verify zero voltage at the contactor terminals with a multimeter.
- Access — Remove the service panel from the condensing unit to expose the control compartment.
- Document — Photograph all line, load, and 24V coil wires before disconnecting anything.
- Remove — Transfer wires one at a time, or label them, then unscrew the old contactor from its bracket and lift it out.
- Install — Mount the new contactor, reconnect line and load to the correct poles and the 24V coil leads per your photo.
- Test — Restore power and start a cooling call; confirm the contacts pull in cleanly and the compressor and fan energize.
Signs You Need a Replacement
- Outdoor unit hums or buzzes but the compressor/fan won't start.
- Visible pitting, burning, or melted plastic on the contactor.
- Chattering or rapid clicking when the thermostat calls for cooling.
- Contacts stay welded closed so the unit runs continuously.
Shipping & Returns
Ships same day 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