Viessmann VITOLIGNO 300-H Series, Руководство по эксплуатации

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Cause Remedy
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Control unit incorrectly set.
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The remote control (if installed) is set incorrectly.
Check the settings and correct if required:
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DHW heating must be switched on. See page 27.
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DHW temperature: See page 27.
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Time: See page 36.
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Switching times: See page 27.
DHW cylinder is cold. Check the settings and correct if required:
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Set DHW temperature: See page 27.
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Heating times for DHW heating: See page 27.
If the heating times are OK: Check the temperature of
the DHW cylinder. If this temperature is too low: Notify
your heating contractor.
The DHW cylinder pump is not running. Check the heating times. If according to the times set in
the control unit the pump should be running: Notify your
heating contractor.
Mixing valve faulty Notify your heating contractor.
The DHW is too hot
Cause Remedy
Control unit incorrectly set. Check the DHW temperature and correct if required.
See page 27.
Sensor fault Notify your heating contractor.
"Fault" is shown in the display
Cause Remedy
Heating system fault Check the type of fault and notify your heating contrac-
tor accordingly. See page 41.
"Warning" is shown on the display
Cause Remedy
Maintenance is required Check the type of warning and notify your heating con-
tractor if necessary. See page 41.
For maintenance intervals: See page 47.
What to do if...
There is no hot water
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