Causes Of Problems - Dimplex SOLCU Installation And Operating Instructions Manual

10.1

Causes of problems

Controller does not appear to function at all:
Secondary symptoms
• Display shows nothing
• No display illumination
The solar pump does not operate, despite the fact that the switch-on conditions
are satisfied:
Secondary symptoms
The pump symbol in the
display rotates
The pump symbol in the
display does not rotate
• The pump symbol in the
display does not rotate
• The display illumination
is red
• A tool symbol flashes in
the display
• The pump symbol in the
display does not rotate
• The display illumination
flashes red
EN
Possible cause
Controller power supply is
interrupted
Possible cause
• Pump power supply is
interrupted
• Pump has seized up
• 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
The operating switch is set
to manual operation and
the pump output is set to
"off"
Short circuit or interruption
of a temperature sensor
730.138 | 08.1
Procedure
• 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)
Procedure
• 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
• No fault
• Set the operating switch to auto-
matic operation
• On the controller, request the
current values from all connected
temperature sensors
• Check all defective sensors and/or
sensor cable
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