Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 128

Troubleshooting
Messages
(cont.)
Message
System characteristics Cause
03 Configuration fault
05 Fault EEV 1
06 Fault EEV 2
07 Message EEV 1
08 Message EEV 2
10 Outside temp sensor
Operation with outside
temperature -40 °C
128
System configuration
fault:
■ Incorrect system
scheme (contains non-
supported heating cir-
cuit)
■ Max. flow temperature
for heating circuit <
min. flow temperature
for cooling the heating
circuit
■ Cooling for unavailable
heating circuit
Fault message from EEV
controller (refrigerant cir-
cuit control)
Fault message from EEV
controller (refrigerant cir-
cuit control), heat pump
stage 2 (type BWS)
Message from EEV con-
troller (refrigerant circuit
control), heat pump
stage 1 (type BW)
Message from EEV con-
troller (refrigerant circuit
control), heat pump
stage 2 (type BWS)
Short circuit, outside
temperature sensor
Measures
Check and match associ-
ated parameters, reset to
delivered condition if
required ("Reset", see
operating instructions),
and reconfigure system.
Contact your local heating
contractor if the cause of
the fault cannot be rem-
edied.
Observe messages in
heat pump module diag-
nosis (see page 154).
Observe messages in
heat pump module diag-
nosis (see page 154).
Observe messages in
heat pump module diag-
nosis (see page 154).
Observe messages in
heat pump module diag-
nosis (see page 154).
Check resistance (Ni 500)
at plug-in connection F0;
replace sensor if
required.