11
Cause
Remedy
The ON/OFF switch is switched off.
Switch the ON/OFF switch ON.
The solar control unit MCB has respon-
ded (mains voltage is present, display is
not illuminated).
Inform your local heating contractor.
Collector limit temperature or set cylinder
temperature has been reached.
Wait until the relevant temperature has
fallen below its respective limit.
The solar control unit is in
"Manual
mode"
.
Select
"Auto"
as follows:
1. Press
.
2. Press until
"Manual mode"
is dis-
played.
3. Press
OK
to confirm.
4. Press until
"Relay 1"
etc. is dis-
played.
5. Press
OK
to confirm.
6. Press the / keys for
"Auto"
.
7. Press
OK
to confirm.
8. Press until
"Main menu"
is dis-
played.
There is no DHW available
Cause
Remedy
The solar control unit is faulty.
Inform your local heating contractor.
Collector temperature is too high; safety
shutdown by the solar control unit.
Wait until the collector temperature has
dropped.
The set cylinder temperature (set DHW
temperature) has been set too low.
Inform your local heating contractor.
The solar circuit pump is faulty.
Inform your local heating contractor.
The DHW cylinder is not being reheated:
The operating and time program is incor-
rectly set at the boiler control unit.
Enable DHW heating.
Operating instructions of the boiler
control unit
What to do if...
The solar thermal system does not start
5608 437 GB
