Operating Faults - Wilo HELIX VE 1 Serie Instrucciones De Instalación Y Funcionamiento

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Operating faults

De-energise the pump before each intervention and secure against non-authorised restarts!
ATTENTION!
All of the incidents listed below will lead to a switch-off via the error relay
Display
Green Red
Led Led
Off On
Off On
Off On
Off On
Off On
Off On
If the pump is at a complete standstill and an intervention is required, disconnect the power supply, wait until the LEDs have gone out completely, eliminate the fault
and reconnect the power supply. If a major fault is present, then an after-sales service employee must be called in.
If the fluid is toxic, corrosive or hazardous for
personnel, then WILO or the authorised repair
company must be informed of the situation.
Clean the pump in such cases in order to ensure
absolute safety for the craftsmen performing
the repairs.
40
Frequency converter behaviour
Reaction time
Number of
up to standstill
automatic
Frequency
re-start
converter
Immediate 3
Immediate
3
Immediate
3
< 60 s 3
< 15 s 0
3
< 60 s
Waiting time
Relay status
before
Contact –
switching
Failure contact
back on
Frequency converter supply
60 s Open
has undervoltage
Frequency converter supply
60 s Open
has overervoltage
60 s Open The motor has a shortcircuit
60 s Open The pump is overloaded
The pump is deactivated or is
/ Open
running dry
The sensor cable (4-20 mA) is
60 s Open
disconnected (only Mode 2)
If the operating fault cannot be rectified, then please
contact your local professional tradesmen or the Wilo
after-sales service in your vicinity.
Fault/possible causes
Check voltage at the
terminals of the frequency
converter
Check voltage at the
terminals of the frequency
converter
Dismantle motor/
frequency converter of the
pump and have it checked
or replace it
Excessive density and/or
viscosity of the pumped
fluid
Re-prime by filling
the pump. Check the
impermeability of the foot
valve
Check correct current
supply and cabling of the
sensor
WILO SE 09/2021
Elimination