25
Troubleshooting
Faults which are displayed at the programming unit
(cont.)
Plain text fault display
Outdoor temperature sensor
Supply sensor
DHW Tank sensor 1 or 2
Will only be displayed if a second DHW tank temperature
sensor is connected.
Sensor 17B
Room temperature sensor
Collector sensor
Solar DHW sensor
Participant number
Fault – participant
Display only if the control unit is programmed as fault
manager.
Calling up acknowledged fault messages
1.
Press
for approx. 2 seconds.
The fault will then be displayed.
2.
Select an acknowledged fault
with
or
.
Fault
code
System characteristics
Cause
Remedy
10
Activates after 0 °C / 32 °F
outdoor temperature
Short circuit
Outdoor temperature sensor
Check outdoor temperature sensor
(see page 39)
18
p
Open circuit
Outdoor temperature sensor
(
p g
)
20
Mixing valve is ”Closed”
Short circuit
Supply temperature sensor
Mixing valve circuit M1
Check supply temperature sensor
(see page 38)
28
Open circuit
Supply temperature sensor
Mixing valve circuit M1
40
Short circuit
Supply temperature sensor
Mixing valve circuit M2
44
Short circuit
Supply temperature sensor
Mixing valve circuit M3
48
Open circuit
Supply temperature sensor
Mixing valve circuit M2
4c
Open circuit
Supply temperature sensor
Mixing valve circuit M3
5581
529
v1.0
08/2006