Generic Waterheater Error Codes

All Generic waterheater error codes with step-by-step troubleshooting, multimeter specs, and OEM part numbers.

3 error codes

Code	Meaning	Severity	Difficulty
HOW-TO-REPLACE-WARRANTY	A step-by-step guide to navigating the home warranty claim process so you actually get a full unit replacement instead of a band-aid repair. When a tank's truly failed, most contracts require replacement. You just have to know how to prove it. low	low
NO-HOT-WATER	The heater's heat source stopped working or can't maintain temperature. For gas units that means the burner's not firing. For electric, one or both elements burned out or a safety switch tripped. Tankless units won't fire at all if the flow sensor doesn't detect enough water moving through the unit. moderateintermediate	moderate	intermediate
NOT-HEATING	Your 240-volt heating circuit quit somewhere. Either power's not reaching the unit, the safety switch cut the circuit because temps spiked past 180 degrees, or the heating elements themselves burned out and can't convert electricity to heat anymore. One of those three, pretty much every time. highadvanced	high	advanced