What amp contactor do I need for my Tempstar system?

The correct replacement for Tempstar model TXH542GKA200 — 30A 24V with Shunt | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Tempstar equipment which lists the model number TXH542GKA200 — 30A 24V with Shunt | Ships Today.

My AC clicks but the compressor does not turn on. What is wrong?

Clicking from the outdoor unit without the compressor starting usually means a worn contactor. The contactor is the relay that sends power to the compressor. When its contacts are pitted or worn, it clicks but cannot establish a solid electrical connection. Other symptoms: visible pitting or burn marks on the contactor face, AC works intermittently, or buzzing from the contactor.

Is this contactor compatible with Bryant or Payne systems too?

Many Tempstar parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Tempstar

Tempstar Single-Pole Contactor for TXH542GKA200 — 30A 24V with Shunt | Ships Today

Name: Tempstar Single-Pole Contactor for TXH542GKA200 — 30A 24V with Shunt | Ships Today
Brand: Tempstar
SKU: 1172472-GEN
Price: 34.95 USD
Availability: InStock

SKU: 1172472-GEN Brand: Tempstar

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Overview

This OEM single-pole definite purpose contactor (Part #1172472) is the electrically controlled switch that energizes the outdoor unit on your Tempstar TXH542GKA200 heat pump. Rated at 30 amps with a 24-volt coil and an integrated shunt, it closes to send line voltage to the compressor and condenser fan motor whenever the thermostat calls for cooling or heating. Contactors are high-cycle wear items: the contacts pit, burn, and weld over years of inrush current. Common failure symptoms include a unit that won't start, a loud chattering or buzzing hum at the contactor, or a condenser that runs continuously and won't shut off because the contacts have fused closed.

Specifications

Spec	Value
Part Number	1172472
Type	Definite Purpose Contactor, with Shunt
Brand	Tempstar (ICP / Heil)
Poles	1 (Single-Pole)
Contact Rating	30 Amps
Coil Voltage	24 VAC

Compatibility

Direct OEM fit for the Tempstar TXH542GKA200 heat pump. This contactor is also shared across many ICP-family condensing units (Heil, Comfortmaker, Arcoaire) that use the 1172472 part number. Verify your existing contactor is single-pole, 30A, with a 24V coil before ordering.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser service/electrical panel.
Document — Photograph all wire connections before disconnecting anything.
Remove — Label and disconnect the line, load, and 24V coil wires, then unscrew the old contactor from its bracket.
Install — Mount the new contactor and reconnect each wire to the matching terminal per your photo.
Test — Restore power and confirm the contactor pulls in on a thermostat call and the compressor/fan start cleanly.

Signs You Need a Replacement

Outdoor unit hums or chatters but won't start.
Visible pitting, burning, or melting on the contacts.
Condenser runs nonstop because contacts are welded closed.
Intermittent cooling that comes and goes with vibration.

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

Tempstar Single-Pole Contactor f...

$34.95

Frequently Asked Questions

Does this Contactor fit my Tempstar TXH542GKA200 — 30A 24V with Shunt | Ships Today?

Yes. This is the factory-specified OEM contactor for the Tempstar TXH542GKA200 — 30A 24V with Shunt | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the contactor on my Tempstar TXH542GKA200 — 30A 24V with Shunt | Ships Today?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.

My AC clicks but the compressor won’t turn on. What’s wrong?

Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.

Is this contactor compatible with Bryant or Payne too?

Many Tempstar parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Tempstar contactor?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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