Gas Water Heater

Model #NU50T62-403 Whirlpool water heater

Here are the diagrams and repair parts for Whirlpool NU50T62-403 water heater, as well as links to manuals and error code tables, if available.

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Showing 6 of 6 parts

Water Heater High-Temperature Sensor


Water heater Diagram


In Stock

Water Heater Dip Tube


Water heater Diagram

Water heater dip tube

Part #4710745

In Stock

Water Heater Gas Control Valve


Water heater Diagram


In Stock

Water Heater Pilot Assembly


Water heater Diagram


In Stock

Water Heater Burner Assembly


Water heater Diagram


Back Order

Water Heater Burner Orifice


Water heater Diagram

Water heater burner orifice

Part #186016-033
Manufacturer substitution
This part replaces 186016-033. Substitute parts can look different from the original.
This part replaces 186016-033

In Stock

Symptoms common to all water heaters

Choose a symptom to see related water heater repairs.

Main causes: water supply needs chlorine treatment, anode rod too reactive
Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating element
Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excessive tank sediment
Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failure, bad thermocouple
Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve assembly failure
Main causes: faulty pressure relief valve, water is overheating
Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element, cracked tank

Articles and videos common to all water heaters

Use the advice and tips in these articles and videos to get the most out of your water heater.

November 1, 2018

How to read a wiring schematic video

By Sears PartsDirect staff

Learn how to decipher symbols so you can buy the right part for your problem.

October 31, 2018

Cleaning your appliances after a drinking water advisory

By Julie Riebe

Find out how to clean and flush household appliances once a boil water advisory is lifted.

August 1, 2015

Water heater common questions

By Sears PartsDirect staff

These common questions and answers can help you make the most of your water heater.