Viessmann Vitocal 300-G BW, Installation And Service Instructions Manual

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117
ID Message (pri-
ority) 1. Cause
2. Measures Access right
52 DHW sens.
Bottom ("
U
")
1. Short circuit, DHW temperature sensor,
bottom
2. Check the sensor and replace, if
required
Customer
54 DHW solar
("
U
")
1. Short circuit, DHW temperature sensor
solar - Vitosolic
2. Check the sensor and replace, if
required
(see Vitosolic installation instructions)
Customer
58 DHW sens. Top
("
U
")
1. Break, DHW temperature sensor, top
2. Check the sensor and replace, if
required
Customer
5A DHW sens.
Bottom ("
U
")
1. Break, DHW temperature sensor, bot-
tom
2. Check the sensor and replace, if
required
Customer
5C DHW solar
("
U
")
1. DHW temperature sensor solar - Vito-
solic
2. Check the sensor and replace, if
required
(see Vitosolic installation instructions)
Customer
60 Buffer cyl.sen-
sor ("
U
")
1. Short circuit, heating water buffer cyl-
inder temperature sensor
2. Check the sensor and replace, if
required
Customer
63 Ext. Heat
source ("
U
")
1. Short circuit, external heat source tem-
perature sensor
2. Check the sensor and replace, if
required
Customer
68 Buffer cyl.sen-
sor ("
U
")
1. Break, heating water buffer cylinder
temperature sensor
2. Check the sensor and replace, if
required
Customer
6B Ext. Heat
source ("
U
")
1. Break, external heat source tempera-
ture sensor
2. Check the sensor and replace, if
required
Customer
Troubleshooting
Control unit diagnostics
(cont.)
5368 522 UAE
Service