Start Page For External Control; Switching The System On/Off - Viessmann Vitotronic SPS Service Instructions Manual

Start page
(cont.)

Start page for external control

Fig. 2

Switching the system on/off

initiates a complete system shutdown. The heat
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pump control unit and sensors remain operational. The
power supply to the system will not be interrupted.
Actual values can still be retrieved; remote diagnosis/
maintenance also remains possible. Frost protection
remains active. The system can be restarted by press-
ing the button again or by remote access.
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If the mains isolator is switched off, then the power
supply to the system will be completely interrupted.
Configuring the system
9