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AO Smith
Gas Water Heater

Model # GPS-75 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith GPS-75 water heater, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 10 parts  |
Ao Smith Water Heater Exhaust Vent Blower Assembly 9004027005
#NI

Cabinet assy diagram

Ao smith water heater exhaust vent blower assembly

Part #9004027005

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

T&p Valve 9003484005
#NI

Cabinet assy diagram

T&p valve

Part #9003484005

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

Ao Smith Inlet Tube 9004314005
#10

Cabinet assy diagram

Ao smith inlet tube

Part #9004314005

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

Water Heater Burner Assembly 9006747005
#2

Cabinet assy diagram

Water heater burner assembly

Part #9006747005

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

Anode Rod 9003892005
#7

Cabinet assy diagram

Anode rod

Part #9003892005

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

Ao Smith Nipple 9003743015
#11

Cabinet assy diagram

Ao smith nipple

Part #9003743015

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

Ao Smith Water Heater Gas Control Valve 9005964005
#1

Cabinet assy diagram

Ao smith water heater gas control valve

Part #9005964005

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

Drain Valve 9001870015
#8

Cabinet assy diagram

Drain valve

Part #9001870015

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

2nd Anode Out/heat Trap N/A
#NI

Cabinet assy diagram

2nd anode out/heat trap

Part #N/A

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

Water Heater Burner Igniter 9003626005
#5

Cabinet assy diagram

Water heater burner igniter

Part #9003626005

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

Most common symptoms to help you fix your water heaters

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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

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