Carrier
Air Handler

Model # FC4DNB042000AAAA Official Carrier air handler

Here are the diagrams and repair parts for Official Carrier FC4DNB042000AAAA air handler, 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 165 parts  |

Latch 314875-201
#NI

Cabinet parts diagram

Latch

Part #314875-201

This item is not returnable
In Stock
Central Air Conditioner Air Handler Fan Control Board HK61EA010
#38

Base/blower assy diagram

Central air conditioner air handler fan control board

Part #HK61EA010

$118.63
9% OFF Phone Price : $130.63
In Stock
Central Air Conditioner Air Handler Transformer (replaces Ht01bd208) HT01CN241
#39

Base/blower assy diagram

Central air conditioner air handler transformer (replaces ht01bd208)

Part #HT01CN241

In Stock
Sw Temp Act HH12HV145
#NI

Cabinet parts diagram

Sw temp act

Part #HH12HV145

In Stock
Connector HY90AZ021
#40

Cabinet parts diagram

Connector

Part #HY90AZ021

This item is not returnable
In Stock
Sw Temp Act HH19ZA940
#NI

Cabinet parts diagram

Sw temp act

Part #HH19ZA940

In Stock
125,kit E/heat 10kw-fused KFCEH0901N10
#NI

Cabinet parts diagram

125,kit e/heat 10kw-fused

Part #KFCEH0901N10

In Stock
Sw Temp Act HH19ZA965
#NI

Cabinet parts diagram

Sw temp act

Part #HH19ZA965

In Stock
211,elec Heat 15kw Ck Br KFCEH3101C15
#NI

Cabinet parts diagram

211,elec heat 15kw ck br

Part #KFCEH3101C15

In Stock
Central Air Conditioner Air Handler Heating Element KFCEH2901N09
#NI

Cabinet parts diagram

Central air conditioner air handler heating element

Part #KFCEH2901N09

In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower carburetor

How to replace a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Replace the carburetor if it's clogged or damaged.…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your air handlers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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.…