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Payne
Heating & Cooling Combined Unit

Model # PA1ZNA042000AAAA Official Payne central package

Here are the diagrams and repair parts for Official Payne PA1ZNA042000AAAA central package, as well as links to manuals and error code tables, if available.

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Installation guide
Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 47 parts  |
Contactor HN51KB024
#39

Control box/base pan assy diagram

Contactor

Part #HN51KB024

The manufacturer no longer makes this part, and there's no substitute part

Sideplate 50ZP500025
#21

Indoor fan assy diagram

Sideplate

Part #50ZP500025

$60.38
In Stock
Carrier Scroll 50ZP500190
#23

Indoor fan assy diagram

Carrier scroll

Part #50ZP500190

$1161.09
In Stock
Grommet P041-5201
Grommet

Part #P041-5201

$182.20
In Stock
Furnace Blower Fan Motor HC43CE200
#24

Indoor fan assy diagram

Furnace blower fan motor

Part #HC43CE200

$541.89 | 
$12.00 OFF Phone Price : $553.89
In Stock
Mount 50ZP400040
#19

Indoor fan assy diagram

Mount

Part #50ZP400040

$46.13
In Stock
Grommet KA56DS001
#13

Control box/base pan assy diagram

Grommet

Part #KA56DS001

This item is not returnable
$2.63
In Stock
Carrier Parition 50ZP400057
#11

Compressor/blower assy diagram

Carrier parition

Part #50ZP400057

$361.69
In Stock
Orifice 50ZP500026
Orifice

Part #50ZP500026

$87.78
In Stock
Switch HH22QA040
#NI

Outside view diagram

Switch

Part #HH22QA040

$199.13
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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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

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 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

Maintaining your air conditioner

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

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

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