Reliance
Gas Water Heater

Model # 640XODS Official Reliance water heater

Here are the diagrams and repair parts for Official Reliance 640XODS water heater, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 54 parts  |

Water Heater Igniter (replaces 183798, 183798-000) 9003410
#57

Water heater diagram

Water heater igniter (replaces 183798, 183798-000)

Part #9003410

BEST SELLER
$18.10
10% OFF Phone Price : $20.10
In Stock
Drain 9000058
#12

Water heater diagram

Drain

Part #9000058

Replaced by #9000058015

?
Manufacturer substitution
This part replaces 9000058. Substitute parts can look different from the original.
This item is not returnable
$17.66
10% OFF Phone Price : $19.66
In Stock
Water Heater Temperature And Pressure Relief Valve 9000728
#15

Water heater diagram

Water heater temperature and pressure relief valve

Part #9000728

$28.29
15% OFF Phone Price : $33.29
In Stock
Water Heater Pilot Tube Assembly (replaces Std317025, Std317255) 9000278
#8

Venting diagram

Water heater pilot tube assembly (replaces std317025, std317255)

Part #9000278

This item is not returnable
$17.69
10% OFF Phone Price : $19.69
In Stock
Anode Rod 9000707
#16

Venting diagram

Anode rod

Part #9000707

Replaced by #9001453

?
Manufacturer substitution
This part replaces 9000707. Substitute parts can look different from the original.
$84.66
6% OFF Phone Price : $89.66
In Stock
Water Heater Thermocouple 9000876
#5

Venting diagram

Water heater thermocouple

Part #9000876

$17.99
10% OFF Phone Price : $19.99
In Stock
Collar Assembly 9000724
#55

Venting diagram

Collar assembly

Part #9000724

In Stock
Vent Collar 9003168
#47

Venting diagram

Vent collar

Part #9003168

In Stock
Door Clip 9000694
#1

Venting diagram

Door clip

Part #9000694

This item is not returnable
In Stock
Flue Pipe 9001281
#32

Venting diagram

Flue pipe

Part #9001281

In Stock

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

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: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

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.…