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Payne
Heating & Cooling Combined Unit

Model # PA3ZNA042000AA Official Payne heat pump

Here are the diagrams and repair parts for Official Payne PA3ZNA042000AA heat pump, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 54 parts  |
Transformer HT01BD209
#NI

Cabinet parts diagram

Transformer

Part #HT01BD209

$74.42
In Stock
Pan Base 50ZP400053
#NI

Cabinet parts diagram

Pan base

Part #50ZP400053

$848.34
In Stock
Bracket 50CT500076
#NI

Cabinet parts diagram

Bracket

Part #50CT500076

$3019.89
In Stock
Plug Assembly HY07MP261
#NI

Cabinet parts diagram

Plug assembly

Part #HY07MP261

$108.12
In Stock
Panel Assembly 50ZP400440
#4

Cabinet parts diagram

Panel assembly

Part #50ZP400440

$230.84
In Stock
Panel 50ZP500339
#11

Cabinet parts diagram

Panel

Part #50ZP500339

$399.67
In Stock
Wrpper Asy 50ZP400429
#3

Cabinet parts diagram

Wrpper asy

Part #50ZP400429

$629.93
In Stock
Grommet P041-5201
#NI

Cabinet parts diagram

Grommet

Part #P041-5201

$188.58
In Stock
Arm, Mount HC98ZZ247
#NI

Cabinet parts diagram

Arm, mount

Part #HC98ZZ247

This item is not returnable
$5.51
In Stock
Fan Blade LA01RA033
#NI

Cabinet parts diagram

Fan blade

Part #LA01RA033

$363.47
In Stock

Most common symptoms to help you fix your heating & cooling combined units

Choose a symptom to see related heating and air conditioning system repairs.

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Why is my furnace not blowing hot enough?

Thermostat problem, clogged air filter, burner failure…

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Why isn’t my air conditioner cooling well?

Dirty air filter, clogged condenser coils, low refrigerant charge, faulty compressor…

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Why isn’t my air conditioner cooling?

Thermostat problems, bad compressor/condenser fan capacitor, lack of refrigerant, failed compressor…

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Why won’t my furnace burners won’t stay lit?

Dirty flame sensor, failed flame sensor, damaged burner, bad high limit switch…

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Why won't my air conditioner turn on?

Main causes: errant thermostat settings, lack of electrical power, clogged drain line, wiring failure, control failure.…

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Why won't my furnace turn on?

Main causes: Errant thermostat settings, lack of power, bad interlock switches, lack of exhaust ventilation, wiring fail…

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Most common repair guides to help fix your heating & cooling combined units

These step-by-step repair guides will help you safely fix what’s broken on your HVAC system.

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How to unclog the air conditioner drain line

The condensate drain line for your central air conditioner can clog with mold and mildew. Water will back up and start d…

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Repair difficulty
Time required
 15 minutes or less
How to replace the furnace flame sensor

How to replace the furnace flame sensor

The flame sensor detects when furnace burner flames are lit. You may need to replace the flame sensor if flames only sta…

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Repair difficulty
Time required
 15 minutes or less
How to replace a heating and air conditioning system thermostat

How to replace a heating and air conditioning system thermostat

The control thermostat for your HVAC system can stop working. This repair guide shows how to replace it.…

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Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your heating & cooling combined units

Use the advice and tips in these articles and videos to get the most out of your HVAC system.

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Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long.…

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