29
Maintenance, warranty and disposal
FAULTS
CONTROL PANEL
CAUSES
REMEDIES
Circulator is not
running although the
electrical power supply
is switched on
LED red
The rotor is blocked
Disassemble the motor and
clean the impeller if the
Should you fail to eliminate
the cause of the malfunction,
refer to the Distributor or
nearest Service Center.
doesn’t succeed (→ 13.2)
Insufficient supply voltage
Verify that the power supply
matches the data on the
name plate.
Building does not get
warm
LED on
The circulator performance
is too low
Increase the suction head
(→10 Circulator setting)
Should you fail to eliminate the cause of the malfunction, refer to the Distributor or nearest
Service Center.
13.2 Unlocking procedure
A red light in the LED indicates a locking.
Turn the selector to the position max, disconnect and connect power supply to start the
automatic release process.The circulator operates 100 attempts to restart (process lasts
approximately 15 minutes).
Every restart is signalled by a short flash of LED light. If the locking is not removed through the
automatic release process after 100 attempts to restart the circulator, it goes into standby and
the LED remains red. In this case follow the manual procedure described in the next steps:
1. Disconnect power supply - the warning light switches off.
2. Close both isolating valves and allow cooling. If there are no shut-off devices, drain the
system so that the fluid level is beneath that of the circulator.
3. Carefully pull the rotor/impeller
4. Remove impurities and deposits with appropriate agents.
5. Reinsert the rotor/impeller
6. Set the selector on the wished position.
7. Connect power supply.
If the circulator doesn’t run → .
With high fluid temperatures and pressures there is the risk of burnings.
Hazard of scalding by simple contact.
