Do you have a question about the Vaillant VU 156/5-5 (H-GB) ecoTEC plus 615 and is the answer not in the manual?
Classification of warnings by danger severity using symbols and signal words.
Defines the product's intended purpose and limitations for safe operation.
Covers installation, operation, gas leaks, flammable materials, product changes, air supply, frost, and maintenance safety.
Guides on how to adjust the desired temperature for the heating system.
Provides instructions on adjusting the hot water temperature, including warnings.
Explains how to check and verify the correct pressure in the heating system.
Describes the frost protection mechanism and its limitations.
Guides on how to address common faults and error messages.
Highlights the necessity of annual inspections by a competent person.
Provides a table of common faults, their causes, and recommended measures.