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Reliance
Gas Water Heater

Model # 640YCRS102 Official Reliance water heater

Here are the diagrams and repair parts for Official Reliance 640YCRS102 water heater, as well as links to manuals and error code tables, if available.

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  • 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”.

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

Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 19 parts  |
Water Heater Manifold Door Assembly 9006138005
#NI

Water heater diagram

Water heater manifold door assembly

Part #9006138005

$165.99
In Stock
Water Heater Manifold Door Gasket 9006141015
#NI

Water heater diagram

Water heater manifold door gasket

Part #9006141015

$25.49 | 
19% OFF Phone Price : $31.49
In Stock
Water Heater Burner (replaces 100110929) 9006136005
#NI

Water heater diagram

Water heater burner (replaces 100110929)

Part #9006136005

$23.93 | 
20% OFF Phone Price : $29.93
In Stock
Window Assembly 9006142015
#NI

Water heater diagram

Window assembly

Part #9006142015

$17.99
In Stock
Anode Rod 9003944005
#1

Water heater diagram

Anode rod

Part #9003944005

Replaced by #100109624

?
Manufacturer substitution
This part replaces 9003944005. Substitute parts can look different from the original.
$31.11
In Stock
Drain Valve 9003906015
#6

Water heater diagram

Drain valve

Part #9003906015

Replaced by #9009086015

?
Manufacturer substitution
This part replaces 9003906015. Substitute parts can look different from the original.
$19.49
In Stock
Dip Tube 9006131005
#4

Water heater diagram

Dip tube

Part #9006131005

Replaced by #100110924

?
Manufacturer substitution
This part replaces 9006131005. Substitute parts can look different from the original.
$24.44
In Stock
Water Heater Pilot Assembly (replaces 6910427) 9006134015
#NI

Water heater diagram

Water heater pilot assembly (replaces 6910427)

Part #9006134015

Replaced by #100110927

?
Manufacturer substitution
This part replaces 9006134015. Substitute parts can look different from the original.
$58.89
In Stock
Igniter 9006143015
#NI

Water heater diagram

Igniter

Part #9006143015

Replaced by #100110936

?
Manufacturer substitution
This part replaces 9006143015. Substitute parts can look different from the original.
$32.22
In Stock
Water Heater Thermocouple (replaces 194621, 6900725, 9000056, 9002322) 9000056015
#NI

Water heater diagram

Water heater thermocouple (replaces 194621, 6900725, 9000056, 9002322)

Part #9000056015

Replaced by #100108267

?
Manufacturer substitution
This part replaces 9000056015. Substitute parts can look different from the original.
$28.57
In Stock

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