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Troubleshooting
Fault display
(cont.)
Deleting the fault codes from the fault memory
Press the following keys:
1.
+
simultaneously for approx. 4 s.
d
å
The "Service" menu appears.
2.
/
for "Fault history".
|
~
3.
to confirm.
d
Fault codes
Fault code dis-
System characteristics
played
AA
Boiler circuit pump on
■
Return temperature raising
■
facility open
Buffer cylinder control valve
■
open
AB
Control mode
AC
Control mode
20
Control mode
21
Control mode
22
Control mode
24
Control unit set to 0 °C out-
side temperature
25
No DHW heating
26
Control mode
27
Control mode
30
Control mode
31
Control mode
32
Control mode
62
4.
/
for "Delete".
|
~
5.
to confirm.
d
6.
/
for "Yes".
|
~
7.
to confirm.
d
8.
until the default display is shown.
ä
Cause
Too much wood charg-
■
ed.
Incorrect set value se-
■
lected at programming
unit.
Faulty system compo-
■
nent (pump, valve or
temperature sensor).
Water pressure is too low.
Water pressure is too
high.
Short circuit, flow temper-
ature sensor
Short circuit, boiler return
temperature sensor
Short circuit, flue gas tem-
perature sensor
Short circuit, outside tem-
perature sensor
Short circuit, top buffer
temperature sensor
Short circuit, centre buffer
temperature sensor
Short circuit, bottom buffer
temperature sensor
Lead break, flow tempera-
ture sensor
Lead break, boiler return
temperature sensor
Lead break, flue gas tem-
perature sensor
Measures
Activate "Dissip excess heat"
■
function.
Check the buffer cylinder temper-
■
ature before heat up and before
recharging fuel. Can the expec-
ted energy be drawn off or stor-
ed?
Check the boiler circuit pump,
■
valve of the return temperature
raising facility and temperature
sensor.
Press reset button for high limit
■
safety cut-out (only possible with
boiler water temperature below
70 °C) and acknowledge the
fault.
Notify heating contractor.
Notify heating contractor.
Check flow temperature sensor
Check boiler return temperature
sensor
Check the flue gas temperature
sensor
Check outside temperature sensor
Check top buffer temperature sen-
sor
Check centre buffer temperature
sensor
Check bottom buffer temperature
sensor
Check flow temperature sensor
Check boiler return temperature
sensor
Check the flue gas temperature
sensor
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