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Display Meaning Remedy
ERR CONN The low power radio connection to the heat
pump has been interrupted.
Check that your heat pump is switched on.
Check that "low power radio" on your heat
pump is activated.
Vitocal operating instructions
Check the signal strength of the "low pow-
er radio" in the "DEV INFO" menu of your
Vitotrol 100-EH: See page 29.
If necessary, move the Vitotrol 100-EH to
a different installation location: See page
11.
Restart the Vitotrol 100-EH: See page 31.
Switch your heat pump off and on again.
Vitocal operating instructions
Return your Vitotrol 100-EH to factory set-
tings: See page 28.
Ask your heating contractor to recommis-
sion the remote control.
ERR SYS and A fault has occurred on your heat pump. Check the message on the heat pump con-
trol unit.
Vitocal operating instructions
Please notify your contractor.
ERR DEV A fault has occurred in the Vitotrol 100-EH. Replace the Vitotrol 100-EH.
The batteries have nearly run out. Replace the batteries: See page 33.
Diagnosis and service checks
Messages shown on the display (cont.)
6197279
Diagnosis
30


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Viessmann Vitotrol 100-EH User Manual - German - 44 pages

Viessmann Vitotrol 100-EH User Manual - Dutch - 44 pages


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