Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 106

Type awt-ac 221.a04 to a13 compact heat pumps, split version for heating and cooling operation
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Troubleshooting
Repairs
(cont.)
Danger
Removing the fuse does not
switch the power circuit to zero
volt. Contact with 'live' compo-
nents can lead to serious injury
from electric current.
Before working on the equip-
ment, always ensure that the
power circuit is also at zero
volt.
106

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