Short Circuit, Cylinder Temperature Sensor 1 - Viessmann VITOTRONIC 300 Installation And Service Instructions Manual

Troubleshooting
Fault messages
(cont.)

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
Short circuit, cylinder temperature sensor 1
51 Short circuit, cylinder temperature sensor 2
With cylinder loading system:
Cylinder heating is started and stopped via cylinder
temperature sensor 1.
Cause
Short circuit, cylinder temperature sensor 2
58 Lead break, 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
Lead break, cylinder temperature sensor 1
59 Lead break, cylinder temperature sensor 2
With cylinder loading system:
Cylinder heating is started and stopped via cylinder
temperature sensor 1.
Cause
Lead break, cylinder temperature sensor 2
5A Lead break, buffer temperature sensor
Control mode
120
Measure
Check the cylinder temperature sensor: See chapter
"Checking temperature sensors"
Measure
Check the cylinder temperature sensor: See chapter
"Checking temperature sensors"
Measure
Check the cylinder temperature sensor: See chapter
■
"Checking temperature sensors"
Without cylinder temperature sensor: Check parame-
■
ter "00" in the "General" group and adjust if necessa-
ry.
Measure
Check the cylinder temperature sensor: See chapter
"Checking temperature sensors"