Operating instructions

59
730.138 | 08.12
EN
10.1 Causes of problems
Controller does not appear to function at all:
Secondary symptoms Possible cause Procedure
Display shows nothing
No display illumination
•
•
Controller power supply is
interrupted
Check the controller power cable
Check the fuse for the power supply
Check the fuse at the controller
(replacement fuse is located in the
case)
•
•
•
The solar pump does not operate, despite the fact that the switch-on conditions
are satisfied:
Secondary symptoms Possible cause Procedure
The pump symbol in the
display rotates
Pump power supply is
interrupted
Pump has seized up
•
•
Check the pump power cable
Check the fuse in the controller
(replacement fuse is located in the
case)
Get the pump working again,
replace if necessary
•
•
•
The pump symbol in the
display does not rotate
The maximum storage
tank temperature has
been reached
The maximum collector
temperature has been
reached
In multi storage tank
systems: the system has
stopped due to a priority
test
The minimum collector
temperature has not
been reached
The maximum loading
temperature has been
reached
Stagnation reduction
activated
Storage tank deactivated
•
•
•
•
•
•
•
No fault•
The pump symbol in the
display does not rotate
The display illumination
is red
A tool symbol flashes in
the display
•
•
•
The operating switch is set
to manual operation and
the pump output is set to
"off"
Set the operating switch to auto-
matic operation
•
The pump symbol in the
display does not rotate
The display illumination
flashes red
•
•
Short circuit or interruption
of a temperature sensor
On the controller, request the
current values from all connected
temperature sensors
Check all defective sensors and/or
sensor cable
•
•