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Compatible Parts for Carrier PY3GNA042090AA

Packaged Unit — 4 OEM replacement parts in stock

The Carrier PY3GNA042090AA is a packaged unit containing both heating and cooling in a single outdoor cabinet. Same-day shipping on orders before 3 PM CST.

4 Parts Packaged Unit Carrier 3.5 Ton (42,000 BTU)

Part Type	Part & Symptom	DIY Level	Price
Igniter	OEM Carrier Spark Electrode Ignitor 48VL400002 Won't ignite, igniter doesn't glow	Medium 30-45 min	$77.95	Buy
Transformer	OEM Carrier Transformer Thermostat blank, no power	Medium 30-45 min	$43.95	Buy
Pressure Switch	OEM Carrier Furnace Pressure Switch 0.18 WC Pressure switch error on LED	Medium 30-45 min	$43.95	Buy
Control Board	OEM Carrier Ignition Control Board LH33WP007 System dead, no LED on board	Hard 1-2 hours	$497.95	Buy

DIY Total (All Parts)

$663.80

Technician Estimate (Parts + Labor)

$1400+

You Save

$736+ (53%)

Troubleshooting? Diagnostic Hub Error Code Lookup

Frequently Asked Questions

What parts does the Carrier PY3GNA042090AA need?

The Carrier PY3GNA042090AA Packaged Unit uses these OEM replacement parts: Igniter, Transformer, Pressure Switch, Control Board. The most commonly replaced part is the Igniter. All 4 parts are in stock with same-day shipping from National HVAC Parts. Total DIY cost for all parts: $663.80 vs $1400+ through a technician.

What type of system is the Carrier

The Carrier PY3GNA042090AA is a packaged unit containing both heating and cooling in a single outdoor cabinet. It is manufactured by Carrier, a brand of Carrier Global Corporation. This unit is rated at 3.5 tons (42,000 BTU/hr) of cooling capacity.

My Carrier PY3GNA042090AA is not working. What part do I need?

Match your symptom to the most likely failed part:
Igniter: Won't ignite, igniter doesn't glow
Transformer: Thermostat blank, no power
Pressure Switch: Pressure switch error on LED
Control Board: System dead, no LED on board
Parts are listed above in order of most common failure. Visit our diagnostic hub for step-by-step troubleshooting guides.

Are these parts compatible with Bryant or Payne?

Carrier, Bryant, and Payne are all made by Carrier Global Corporation. Many PY3GNA042090AA parts are cross-compatible with Bryant and Payne systems under different model numbers. Email info@nationalhvacparts.com with your model number to verify.

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Compatible Parts for Carrier PY3GNA042090AA

Frequently Asked Questions