AXW smart - Biral

58
english
9. Summary of malfunctions
All poles of the supply voltage must be switched off
and secured against reconnection without fail
before removing the terminal box cover and before
dismantling the pump at any time.
Fault Cause Remedy
Pump does not run No motor voltage Check switch and fuses,
(no LED indication)
check supply voltage
Motor defective
Change pump
Short-circuit
when pump switched on Mains wrongly connected Connect correctly
Motor defective
Change pump
E1 lit red Sensor error forward flow (Pump changes
Connection to forward
to continuous operation.)
flow sensor interrupted
Check fitting of temperature
sensor and connection
of blue plug (4.6)
E2 lit red Overheating (Pump switched off.
The temperature
It switches on again
at the return flow sensor automatically after cooling.)
above 85°C
=> check system
E3 lit red No heating of forward flow (Pump switched off)
takes place with pump running: Acknowledge error message:
dry running, boiler cold
press control button,
or non-return valve blocked possibly vent pump (6.2)
E4 lit red Defective non-return valve (Pump runs in normal operation.)
Error message can be reset
by pressing control button.
Check/replace non-return valve.
Subject to technical modifications