Low
517 on Viessmann Vitodens 100-W B1HF-19

Your boiler is still heating your home and providing hot water, but the thermostat or remote control you use to adjust it has stopped communicating with the boiler, so you may not be able to change settings from it.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Normal operation, remote control not functioning. Cause: Lead break, PlusBus cable, incorrect appliance address set, remote control faulty

From this model's manual
Verified against the Viessmann/Viessmann Vitodens 100 W B1hf B1kf 6167586 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check the batteries in the remote control and replace them if they are low or flat.Make sure the remote control is switched on and the display is working.Switch the boiler off at its on/off switch, wait 30 seconds, then switch it back on to reset the connection.Check that the wires connecting the remote control to the boiler are not visibly damaged or loose at either end, but do not open the boiler casing.If the code returns, contact a Gas Safe registered engineer to check the PlusBus cable, the boiler's appliance address setting and the remote control itself.

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All 151 fault codes on the Vitodens 100-W B1HF-19

Seeing a different code? Every code this model can display, in one place.

78111213141516293049505758596263646567686970717273747577788789919295100102103104142161162163176182183184185299345346347348349350351352353354355357359361364365366367368369370371372373374375376377378379380381382383384385386387388395396399400401402403404405406408410416417418425446447448449451452453454455456457458461462463464467468471474477527528540544545574575576577578579682683684694738766767799979980981982E10E12

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