Viessmann Vitotronic 200 Installation And Service Instructions Manual page 59

Faults that are displayed at the programming unit
Fault code System character-
on the dis- istics
play
58 Cylinder primary
pump "ON":
Set DHW tempera-
ture = Set boiler
water temperature
Priority control is
cancelled or
With cylinder pri-
mary system:
Cylinder heating is
started and stopped
by cylinder tem-
perature sensor 2
59 With cylinder pri-
mary system:
Cylinder heating is
started and stopped
by cylinder tem-
perature sensor 1
60 Boiler with maxi-
mum temperature,
no output reduction;
mixer return tem-
perature control
"OPEN"
68 Boiler with maxi-
mum temperature,
no output reduction;
mixer return tem-
perature control
"OPEN"
70 Shunt pump con-
stantly "ON"
With cylinder pri-
mary system:
Mixer primary circuit
"Close"; no DHW
heating
Cause Measures
Cylinder tempera- Check the cylinder tem-
ture sensor 1 lead perature sensor (see
broken page 109)
Cylinder tempera- Check the cylinder tem-
ture sensor 2 lead perature sensor (see
broken page 109)
Temperature sen- Check temperature sen-
sor aJA shorted sor (see page 110)
out
Temperature sen- Check temperature sen-
sor aJA lead sor (see page 110)
broken Without temperature
sensor:
Set code "4A:0".
Temperature sen- Check temperature sen-
sor aJB shorted sor (see page 110)
out
Troubleshooting
(cont.)
59