88
38 Lead break, boiler water temperature sensor
■
With DHW cylinder:
Circulation pump for cylinder heating on, boiler is
maintained at set cylinder temperature.
■
Without DHW cylinder:
Boiler is regulated by the temperature controller.
Cause
Measure
Lead break, boiler water temperature sensor
Check the boiler water temperature sensor: See chap-
ter "Checking temperature sensors"
3A LAN hardware error
Control mode
Cause
Measure
Network module error
Check the network module and replace if necessary.
3B LAN system error
Control mode
Cause
Measure
Memory problems
Switch the control unit OFF and ON again.
50 Short circuit, cylinder temperature sensor 1
■
Cylinder loading pump on:
DHW temperature target = set flow temperature
Priority control is cancelled.
or
■
With cylinder loading system:
Cylinder heating is started and stopped via cylinder
temperature sensor 2.
Cause
Measure
Short circuit, cylinder temperature sensor 1
Check the cylinder temperature sensor: See chapter
"Checking temperature sensors"
51 Short circuit, cylinder temperature sensor 2
With cylinder loading system:
Cylinder heating is started and stopped via cylinder
temperature sensor 1.
Cause
Measure
Short circuit, cylinder temperature sensor 2
Check the cylinder temperature sensor: See chapter
"Checking temperature sensors"
52 Short circuit, buffer temperature sensor
Control mode
Troubleshooting
Fault messages
(cont.)
5863679
Diagnosis
Содержание Vitotronic 11 CC1E
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