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9.2 Faults without error messages
Faults and malfunctions that cannot be displayed as well as possible causes and
their error source can be identifi ed using the following table. If you cannot rem-
edy the fault using the description below, contact the supplier or installer.
Problem
Possible causes
Measures
Display does not
function
230V mains voltage not
available
■
Switch on or connect
controller
Check the connection's
main fuse
Defective fuse inside the
device
■
Check the fuse*,
replace with a new type
2A/T, if necessary.
Check the 230V compo-
nents for short-circuits
Defect device
■
Contact the supplier
Outputs are not
switched on
Controller is in manual
operation
■
Exit "Manual" operation.
Switch-on condition is not
satisfi ed.
■
Wait until switch-on
condition is satisfi ed.
"Pump" symbol
rotates, but the
pump is not on
Connection to the pump
interrupted.
■
Check the cable leading
to the pump
Pump is blocked.
■
Free the pump
No voltage present at the
switching output.
■
Contact the supplier.
Temperature
display strongly
fl uctuates at
short intervals
Sensor cables are installed
near the 230V cables
■
Relocate sensor cables,
shield sensor cables
Long sensor cables
extended without
shielding
■
Shield sensor cables
Defect device
■
Contact the supplier
Faults that aff ect the
230V/A mains power
supply must only be remedied
by a specialist!
Faults that aff ect the
230V/A mains power
supply must only be remedied
by a specialist!
