Janitrol
Air Handler

Model # A42-20 Official Janitrol air handler with coil

Here are the diagrams and repair parts for Official Janitrol A42-20 air handler with coil, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 40 parts  |

Transformer B11416-43
#12

Air handler diagram

Transformer

Part #B11416-43

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

Capacitor 7. B9456-51
#18

Air handler diagram

Capacitor 7.

Part #B9456-51

Replaced by #12907

?
Manufacturer substitution
This part replaces B9456-51. Substitute parts can look different from the original.
This item is not returnable
$4.87
17% OFF Phone Price : $5.87
In Stock
Plastic Pan 17559-17N
#21

Air handler diagram

Plastic pan

Part #17559-17N

Replaced by #B1755917HDF

?
Manufacturer substitution
This part replaces 17559-17N. Substitute parts can look different from the original.
$85.66
7% OFF Phone Price : $91.66
In Stock
Motor 1/3 Hp B13400-312
#15A

Air handler diagram

Motor 1/3 hp

Part #B13400-312

Replaced by #B13400312S

?
Manufacturer substitution
This part replaces B13400-312. Substitute parts can look different from the original.
$371.59
$12.00 OFF Phone Price : $383.59
In Stock
Time Delay B13707-38
#11

Air handler diagram

Time delay

Part #B13707-38

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

Heating Elem B10374-67
#7

Air handler diagram

Heating elem

Part #B10374-67

Replaced by #B1037485S

?
Manufacturer substitution
This part replaces B10374-67. Substitute parts can look different from the original.
$80.25
7% OFF Phone Price : $86.25
In Stock
Service Coil 1585404-42NS
#19A

Air handler diagram

Service coil

Part #1585404-42NS

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

Sequencer B12565-51
#9

Air handler diagram

Sequencer

Part #B12565-51

Replaced by #B1256558

?
Manufacturer substitution
This part replaces B12565-51. Substitute parts can look different from the original.
In Stock
Heating Elem B10374-68
#7A

Air handler diagram

Heating elem

Part #B10374-68

Replaced by #B1037488S

?
Manufacturer substitution
This part replaces B10374-68. Substitute parts can look different from the original.
$141.73
8% OFF Phone Price : $153.73
In Stock
Sequencer A- B12565-52
#9A

Air handler diagram

Sequencer a-

Part #B12565-52

Replaced by #24A34-3

?
Manufacturer substitution
This part replaces B12565-52. Substitute parts can look different from the original.
$29.43
17% OFF Phone Price : $35.43
In Stock

Symptoms for electric ranges

Main causes: impact from dropping an item on the glass surface, ceramic glass surface flaw, surface element temperature …

Main causes: faulty surface element, burner control switch failure, temperature limiter not working properly, loose wiri…

Repair guides for electric ranges

How to replace a range radiant surface element

How to replace a range radiant surface element

If the element on your glass cooktop isn't heating up even though it gets power, replace it yourself, in about 45 minute…

Repair difficulty
Time required
 45 minutes or less
How to replace an electric range oven control board

How to replace an electric range oven control board

If the electronic oven control board isn't powering the bake and broil functions, you can replace it in less than half a…

Repair difficulty
Time required
 15 minutes or less
How to replace a range coil surface element

How to replace a range coil surface element

Easily replace a coil surface element in 15 minutes or less by following these step-by-step instructions.…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your air handlers

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…