Vaillant · Heat pumps · Vaillant aroTHERM plus with uniTOWER plus
S.281Freq. converter fault: Mains voltage
Name in the manufacturer's documentation (service manual): Freq. converter fault: Mains voltage
[1]
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Sources
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- [1] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 58 official manufacturer document quote verified
S.281 Freq. converter fault:
- [2] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 58 official manufacturer document quote verified
There is overvoltage or undervoltage. Mains voltage
- [3] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 58 official manufacturer document quote verified
There is overvoltage or undervoltage