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AO Smith
Gas Water Heater

Model # GPDT50100 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GPDT50100 water heater, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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Showing 10 of 40 parts  |
Switch 184353-000
#30

Water heater diagram

Switch

Part #184353-000

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

Vent Pipe 0008400870
#3

Water heater diagram

Vent pipe

Part #0008400870

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

Elbow 0006600690
#4

Water heater diagram

Elbow

Part #0006600690

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

Switch 184355-000
#31

Water heater diagram

Switch

Part #184355-000

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

Burner 184351-000
#19A

Water heater diagram

Burner

Part #184351-000

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

Door 0015123490
#23

Water heater diagram

Door

Part #0015123490

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

Orifice 181791-044
#18C

Water heater diagram

Orifice

Part #181791-044

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

Anode 184977-216
#NI

Water heater diagram

Anode

Part #184977-216

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

Vent Cap 192815-000
#1

Water heater diagram

Vent cap

Part #192815-000

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.

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Why isn't my water heater heating my water?

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

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Why is there water in my water heater's drain pan?

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

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Why does my hot water smell like rotten eggs?

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

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Why isn't my water heater making enough hot water?

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

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Why is my water heater's pressure relief valve dripping water?

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

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Why isn't my water heater making the water hot enough?

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

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Why is my water heater making the water too hot?

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

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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.

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How to read a wiring schematic video

How to read a wiring schematic video

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Easy DIY water heater repairs

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Water heater common questions

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