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AO Smith
Gas Water Heater

Model # GPHE50 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GPHE50 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 27 parts  |
Ao Smith Water Heater Inspection Port (replaces 183568-000, 183569-001, 183570-000, 21253, 9003414005) 9003414
#6

Burner assy diagram

Ao smith water heater inspection port (replaces 183568-000, 183569-001, 183570-000, 21253, 9003414005)

Part #9003414

Replaced by #100109224

?
Manufacturer substitution
This part replaces 9003414. Substitute parts can look different from the original.
$34.44
In Stock
Outer Door 9003545
#1

Water heater diagram

Outer door

Part #9003545

Replaced by #100109299

?
Manufacturer substitution
This part replaces 9003545. Substitute parts can look different from the original.
$35.56
In Stock
Ao Smith Water Heater Manifold Door Gasket (replaces 183162, 183162-000) 9003401
#5

Burner assy diagram

Ao smith water heater manifold door gasket (replaces 183162, 183162-000)

Part #9003401

Replaced by #100109214

?
Manufacturer substitution
This part replaces 9003401. Substitute parts can look different from the original.
$31.11
In Stock
Water Heater Water Line Connector 9003719
#13

Water heater diagram

Water heater water line connector

Part #9003719

Replaced by #100108381

?
Manufacturer substitution
This part replaces 9003719. Substitute parts can look different from the original.
$22.86
In Stock
Vent Pipe Asy 9005985
#2

Vent pipe assy/envelope parts diagram

Vent pipe asy

Part #9005985

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

Burner Head 9005990
#3

Burner assy diagram

Burner head

Part #9005990

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

Door 9005991
#4

Burner assy diagram

Door

Part #9005991

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

Top 9005977
#4

Water heater diagram

Top

Part #9005977

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

Blower 9005979
#5

Water heater diagram

Blower

Part #9005979

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

Inlet Tube 9005983
#12

Water heater diagram

Inlet tube

Part #9005983

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 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 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 making the water too hot?

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

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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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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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Wiring schematic symbols explained video

Wiring schematic symbols explained video

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Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

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Easy DIY water heater repairs

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