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Troubleshooting.
Faults
Pump not working with
power supply on.
The pump generates
noise
The building does not
heat up.
Diagnostics in real time
- The anomaly LED indicates a fault.
- The pump stops (depending on the fault), and performs
cyclical attempts to restart.
LED
Block
It lights up red
Contact/winding
Under/Overvoltage
It flashes with
Excessive module tem-
red light
perature
Short-circuit
Turbine operation
Dry operation
It flashes with
red/green light
Overload
Manual restart
When a blockage is detected, the pump tries to automatically
restart.
If the pump does not automatically restart:
- Activate the manual restart by pressing the control key for 5
seconds, then release.
- The restart function starts and last max. 10 minutes.
- The LEDs flash one after the other clockwise.
- To interrupt, press the control key for 5 seconds.
Causes
Faulty electrical fuse
The pump is without voltage
Cavitation due to insufficient flow pres-
sure
Heat output of the radiant panels too
low
Faults
Rotor seized
Faulty winding
Feed side power supply voltage too low/
high
Inside of the too hot module
Motor current too high
The hydraulic system of the pumps is fed
but the pump has no mains voltage
Air in the pump
The motor runs with difficulty. The pump
complies with the specifications (e.g. high
module temperature). The number of
revolutions is lower than normal operation
Check the fuses
Eliminate the power supply cut-off
Increase the system pressure within the allowed field
Check the head setting and eventually set a lower head
Increase the delivery value
Set the adjustment mode to ΔP-c instead of ΔP-v
Causes
Activate the manual restart or contact
the Authorised Technical Service
Centre
Check the mains voltage and operating
conditions, ask the Authorised
Technical Assistance Centre
Check the mains voltage, the water
pressure/flow rate as well as the
environmental conditions
20
Solutions
Solutions
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