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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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Showing 10 of 54 parts  |
Contactor HN51JD024
#NI

Cabinet parts diagram

Contactor

Part #HN51JD024

Replaced by #90-244

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Manufacturer substitution
This part replaces HN51JD024. Substitute parts can look different from the original.
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$26.61 | 
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In Stock
Heater HT32BH293
#NI

Cabinet parts diagram

Heater

Part #HT32BH293

$34.33
In Stock
Wrpper Asy 50ZP400429
#3

Cabinet parts diagram

Wrpper asy

Part #50ZP400429

$629.93
In Stock
Transformer HT01BD209
#NI

Cabinet parts diagram

Transformer

Part #HT01BD209

$74.42
In Stock
Paint 313974-751
#NI

Cabinet parts diagram

Paint

Part #313974-751

$60.89
In Stock
Valve,serv EC39EZ065
#NI

Cabinet parts diagram

Valve,serv

Part #EC39EZ065

$10.03
In Stock
Grommet KA56GR140
#NI

Cabinet parts diagram

Grommet

Part #KA56GR140

This item is not returnable
$3.11
In Stock
Panel,elec 50ZP500345
#12

Cabinet parts diagram

Panel,elec

Part #50ZP500345

$315.82
In Stock
Panel Assembly 50ZP400440
#4

Cabinet parts diagram

Panel assembly

Part #50ZP400440

$230.84
In Stock
Grommet P041-5201
#NI

Cabinet parts diagram

Grommet

Part #P041-5201

$188.58
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 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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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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