![Error message "CL" showing on new Viessmann boiler, anyone got any clue what this could mean? Can't find the message in the book or anywhere else... : r/hvacadvice Error message "CL" showing on new Viessmann boiler, anyone got any clue what this could mean? Can't find the message in the book or anywhere else... : r/hvacadvice](https://preview.redd.it/error-message-cl-showing-on-new-viessmann-boiler-anyone-got-v0-2dk5od48iz691.png?auto=webp&s=3e320d0e1a8c1e78340c0685a3c6b6a43ec14642)
Error message "CL" showing on new Viessmann boiler, anyone got any clue what this could mean? Can't find the message in the book or anywhere else... : r/hvacadvice
![Bought a house, had a Viessmann Vitdoen 100 (4 years old), previous owner never serviced. Plumber suggest replacing entire unit as Viessmann are not well built/require lots of servicing a year. Please Bought a house, had a Viessmann Vitdoen 100 (4 years old), previous owner never serviced. Plumber suggest replacing entire unit as Viessmann are not well built/require lots of servicing a year. Please](https://preview.redd.it/yvm20ms77ut91.jpg?auto=webp&s=8ef1bc00fcb0e37b2e8aaf799444641baa4f8432)
Bought a house, had a Viessmann Vitdoen 100 (4 years old), previous owner never serviced. Plumber suggest replacing entire unit as Viessmann are not well built/require lots of servicing a year. Please
![hitzler-villenbach-partner-logos-viessmann-heizung-400x400 - Hitzler - Heizung - Sanitär - Spenglerei - Lüftung hitzler-villenbach-partner-logos-viessmann-heizung-400x400 - Hitzler - Heizung - Sanitär - Spenglerei - Lüftung](http://www.hitzler.biz/wp-content/uploads/2015/02/hitzler-villenbach-partner-logos-viessmann-heizung-400x400.jpg)