Viessmann Pt500A (Green Marking); Checking The Fuses - Viessmann Vitocal 222-G Installation And Service Instructions Manual
Compact heat pumps, 400 v~ and 230 v~
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Also See for Vitocal 222-G:
- User manual (236 pages) ,
- Installation and service instructions manual (132 pages) ,
- Technical manual (92 pages)
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Checking the sensors
Viessmann Pt500A (green marking)
860
780
700
620
540
460
-20
20
60
Temperature in °C
Fig. 51
Checking the fuses
For fuse locations, see page 23 onwards.
Fuse F1 is located on the mains terminal of the heat
■
pump control unit.
Fuse F3 is located on the main PCB.
■
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 cur-
rent.
Before working on the equipment, always
ensure that the power circuit is also at zero
volt.
(cont.)
100
140
180
Fuses F1 and F3:
6.3 A (slow), 250 V~
■
Max. power loss
2.5 W
■
≤
Maintenance
57
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