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Parts and tools for tankless water heater error codes

These are the parts, tools and supplies that the manufacturer manuals behind our tankless water heater code pages name. Each guide explains what the item does, how to choose and test it and when to leave it to a technician. Shopping links are Amazon links; search links open results and never confirm a fit for your model.

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Smell gas?If you smell gas, leave the building and call your gas utility from outside. Do not try to light the water heater.