AO Smith
Gas Water Heater

Model # FPD40270 Official AO Smith water heater

Here are the diagrams and repair parts for Official AO Smith FPD40270 water heater, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 59 parts  |

Valve 76527-3
#55

Water heater diagram

Valve

Part #76527-3

Replaced by #9000071

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Manufacturer substitution
This part replaces 76527-3. Substitute parts can look different from the original.
$15.54
11% OFF Phone Price : $17.54
In Stock
Angle,l 181450
#14

Water heater diagram

Angle,l

Part #181450

This item is not returnable
In Stock
Drain Valve 42037
#53

Water heater diagram

Drain valve

Part #42037

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

Combo.valv 183760
#18

Water heater diagram

Combo.valv

Part #183760

Replaced by #100109724

?
Manufacturer substitution
This part replaces 183760. Substitute parts can look different from the original.
In Stock
Collar 20172-21
#12

Water heater diagram

Collar

Part #20172-21

Replaced by #9004610115

?
Manufacturer substitution
This part replaces 20172-21. Substitute parts can look different from the original.
In Stock
Wall Plate 181557
#34

Water heater diagram

Wall plate

Part #181557

Replaced by #9004364105

?
Manufacturer substitution
This part replaces 181557. Substitute parts can look different from the original.
In Stock
Bi-metal Tip 21224
#26

Water heater diagram

Bi-metal tip

Part #21224

Replaced by #9004660105

?
Manufacturer substitution
This part replaces 21224. Substitute parts can look different from the original.
In Stock
Restrictor 182275
#24

Water heater diagram

Restrictor

Part #182275

Replaced by #182275-000

?
Manufacturer substitution
This part replaces 182275. Substitute parts can look different from the original.
In Stock
Coupling 182269
#29

Water heater diagram

Coupling

Part #182269

Replaced by #182269-000

?
Manufacturer substitution
This part replaces 182269. Substitute parts can look different from the original.
In Stock
Inlet Tube 183359-41
#50

Water heater diagram

Inlet tube

Part #183359-41

Replaced by #183359-041

?
Manufacturer substitution
This part replaces 183359-41. Substitute parts can look different from the original.
This item is not returnable
In Stock

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…

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

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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…

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Wiring schematic symbols explained video

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Easy DIY water heater repairs

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