Troubleshooting; 10.1. Faults - Wilo Actun OPTI-QS Serie Instrucciones De Instalación Y Funcionamiento

English

10. Troubleshooting

In order to prevent damage or serious injury when repairing malfunctions on the unit,
observe the following:
• Attempt to remedy a fault only if you have qualified staff available. This means that
each job must be carried out by qualified personnel. For example, electrical work must
be performed by a trained electrician.
• Always secure the unit against an accidental restart by disconnecting it from the mains.
Take appropriate safety precautions.
• Always have a second person on hand to ensure the unit is switched off in an emergen-
cy.
• Secure moving parts to prevent injury.
• Unsanctioned modifications to the unit are made at the operator's own risk and release
the manufacturer from any warranty obligations.

10.1. Faults

10.1.1.
1. Electricity supply interrupted, short-circuit or earth fault in the connection cable and/or
motor winding
• Have the motor and connection cable checked by a specialist and replaced if neces-
sary
2. With solar power operation: Solar panels do not generate sufficient power
• Check the alignment of the solar panels and correct if necessary
• Check solar panels for dirt and clean if necessary
• In the event of an insufficient exposure to the sun as a result of the time of day or
cloudy skies, switch over to mains operation or a generator or wait for the weather
conditions to improve
3. Fuses and/or monitoring devices were triggered
• Have a specialist inspect the connections and correct them as necessary
• Install and set miniature circuit breakers according to the technical instructions, reset
monitoring devices
• Check that the impeller runs freely. If necessary clean it and ensure it runs freely again
10.1.2.
1. No fluid available
• Check fluid level or inlet, if necessary open slide valve
• Clean the supply line, slide valve, suction piece, suction port, or suction strainer
• During standstill, the pressure pipe drains; check the pipework for leakage and the
non-return valve for contaminants; remedy errors
2. Impeller blocked or impaired movement
• Switch off the unit, secure it against being switched back on again and free the
impeller
76
Fault: The unit will not start or only starts after a delay
Fault: Unit is running but not pumping
TROUBLESHOOTING
WILO SE 02-2019 DIN A5