Reliance
Gas Water Heater

Model # 640CODS Official Reliance water heater

Here are the diagrams and repair parts for Official Reliance 640CODS 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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ALL PARTS
Showing 10 of 54 parts  |

Gasket 9000710
Gasket

Part #9000710

In Stock
Vent Pipe 9001277
#27

Venting diagram

Vent pipe

Part #9001277

This item is not returnable
In Stock
Door 9000695
#2

Water heater diagram

Door

Part #9000695

In Stock
Jacket Clips 9001305
#13

Venting diagram

Jacket clips

Part #9001305

This item is not returnable
In Stock
Vent Pipe 9001279
#41

Venting diagram

Vent pipe

Part #9001279

In Stock
Vent Pipe 9001275
#33

Venting diagram

Vent pipe

Part #9001275

This item is not returnable
In Stock
Vent Pipe 9001276
#39

Venting diagram

Vent pipe

Part #9001276

In Stock
State Flue Baffle 9000709
#18

Water heater diagram

State flue baffle

Part #9000709

In Stock
Vent Pipe 9001278
#35

Venting diagram

Vent pipe

Part #9001278

This item is not returnable
In Stock
Collar Assembly 9000724
#55

Venting diagram

Collar assembly

Part #9000724

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...

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: faulty pressure relief valve, water is overheating...

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

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

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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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