Model # 8-40-NARS7 Official Reliance gas water heater

Here are the diagrams and repair parts for Official Reliance 8-40-NARS7 gas water heater, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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ALL PARTS

Showing 10 of 28 parts |

#14

Functional replacement parts diagram

Water heater thermocouple

Part #9000283

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

Functional replacement parts diagram

Control v/v

Part #9001319

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

Functional replacement parts diagram

Box

Part #9000356

This item is not returnable

$4.99

In Stock

Qty

Water Heater Manifold Inner Door 9000281

#18

Functional replacement parts diagram

Water heater manifold inner door

Part #9000281

$17.69 |

10% OFF Phone Price : $19.69

In Stock

Qty

#19

Functional replacement parts diagram

Water heater drain valve

Part #9000254

This item is not returnable

$17.69 |

10% OFF Phone Price : $19.69

In Stock

Qty

Water Heater Temperature And Pressure Relief Valve 9000071

#20

Functional replacement parts diagram

Water heater temperature and pressure relief valve

Part #9000071

Replaced by #100108279

$32.22

In Stock

Qty

#15

Functional replacement parts diagram

Pilot

Part #9000284

Replaced by #100109070

$47.78

In Stock

Qty

Functional replacement parts diagram

Nipple

Part #9000948

Replaced by #9002564

$19.19 |

9% OFF Phone Price : $21.19

In Stock

Qty

#26B

Functional replacement parts diagram

Drain pan

Part #9000743

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

Functional replacement parts diagram

Ring

Part #9000275

Replaced by #100108369

$27.78

In Stock

Qty

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

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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…

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,…

Why does my hot water smell like rotten eggs?

Main causes: water supply needs chlorine treatment, anode rod too reactive…

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…

Why is my water heater's pressure relief valve dripping water?

Main causes: faulty pressure relief valve, water is overheating…

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…

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…

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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Model # 8-40-NARS7 Official Reliance gas water heater

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Most common symptoms to help you fix your water heaters

Why isn't my water heater heating my water?

Why is there water in my water heater's drain pan?

Why does my hot water smell like rotten eggs?

Why isn't my water heater making enough hot water?

Why is my water heater's pressure relief valve dripping water?

Why isn't my water heater making the water hot enough?

Why is my water heater making the water too hot?

Effective articles & videos to help repair your water heaters

How to read a wiring schematic video

Easy DIY water heater repairs

Water heater common questions

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