Gas Water Heater

Model # GPDX75100 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GPDX75100 water heater, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

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

Browse Parts for
GPDX75100 Water Heaters
Anode Rod 183523-039
#14

Water heater diagram

Anode rod

Part #183523-039

Replaced by #100109594

?
Manufacturer substitution
This part replaces 183523-039. Substitute parts can look different from the original.
In Stock
Inlet Tube 183901-040
#13A

Water heater diagram

Inlet tube

Part #183901-040

Replaced by #9002432005

?
Manufacturer substitution
This part replaces 183901-040. Substitute parts can look different from the original.
In Stock
Temperature Valve 043151-000
#12

Water heater diagram

Temperature valve

Part #043151-000

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

Dip Tube 183900-028
#13

Water heater diagram

Dip tube

Part #183900-028

Replaced by #100109381

?
Manufacturer substitution
This part replaces 183900-028. Substitute parts can look different from the original.
In Stock
Nipple 184633-002
#NI

Water heater diagram

Nipple

Part #184633-002

Replaced by #100108409

?
Manufacturer substitution
This part replaces 184633-002. Substitute parts can look different from the original.
In Stock
Adapter 196057-000
#33C

Water heater diagram

Adapter

Part #196057-000

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

Door Clip 0002400720
#25A

Water heater diagram

Door clip

Part #0002400720

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

Drain Valve 026273-007
#21

Water heater diagram

Drain valve

Part #026273-007

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

Blower 0012400490
#6

Water heater diagram

Blower

Part #0012400490

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

Manifold 184323-002
#22A

Water heater diagram

Manifold

Part #184323-002

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

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

Main causes: water supply needs chlorine treatment, anode rod too reactive…

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

Main causes: faulty pressure relief valve, water is overheating…

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…

Effective articles & videos to help repair your water heaters

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

How to read a wiring schematic video

How to read a wiring schematic video

Learn how to decipher symbols so you can buy the right part for your problem.…

Easy DIY water heater repairs

Easy DIY water heater repairs

Read about some water heater repairs that you can easily do yourself.…

Water heater common questions

Water heater common questions

These common questions and answers can help you make the most of your water heater.…