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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Browse Parts for
GPHE50 Water Heaters
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

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

Water heater diagram

Outer door

Part #9003545

Replaced by #100109299

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Manufacturer substitution
This part replaces 9003545. Substitute parts can look different from the original.
In Stock
Water Heater Water Line Connector 9003719
#13

Water heater diagram

Water heater water line connector

Part #9003719

Replaced by #100108381

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Manufacturer substitution
This part replaces 9003719. Substitute parts can look different from the original.
In Stock
Temperature And Pressure Valve 9003917
#7

Water heater diagram

Temperature and pressure valve

Part #9003917

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

Switch & H 9006555
#6A

Water heater diagram

Switch & h

Part #9006555

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

Control 9005964
#3

Water heater diagram

Control

Part #9005964

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

Orifice 9005992
#9

Burner assy diagram

Orifice

Part #9005992

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

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

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

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

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.

Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

Easy DIY water heater repairs

Easy DIY water heater repairs

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