Faults, Causes And Remedies - Wilo Yonos PICO-STG Instrucciones De Instalación Y Funcionamiento

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9 Maintenance
DANGER! Risk of fatal injury!
There is a risk of fatal injury from electric shock when work-
ing on electrical equipment.
• Before starting any maintenance and repair work, disconnect
the pump from the power supply, and make sure it cannot be
switched back on by unauthorised persons.
• Any damage to the connection cable should only ever be
eradicated by a qualified electrician.
After successful maintenance and repair work, install and
connect the pump according to the "Installation and electrical
connection" chapter. Switch on the pump according to the
"Commissioning" chapter.

10 Faults, causes and remedies

LED Meaning
illumi- Pump in
nated operation
in
green
illumi- Pump is in
nated PWM mode
in
orange
32
Operating
status
Pump is running
according to
your settings
Pump is speed-
controlled by the
PWM signal
Cause
Normal operation
Normal operation
Remedy
WILO SE 12/2018