5 / 15
3. Fault correction
3.1 Fault finding
Fault finding should always start with a check that the external conditions for correct function are OK. This is
done by checking:
• that the mains supply is in accordance with the data on the nameplate,
• that the installation was carried out according to the installation and operating instructions,
• that the external on/off switch has been connected correctly,
• that the desired setpoint signal is available,
• that the requested sensor signal is available.
3.1.1 Printing of data registers
The Grundfos R100 remote control enables the printing of status for the data registers by means of a Hewlett
Packard infrared printer.
The purpose of this is to ensure that the service technician can print out the data registers before starting the
fault finding so that this print stating the original fault information can be enclosed, in case the product is re-
turned to Grundfos.
The pump must be serviced by a qualified person.
Service must be carried out in accordance with local regulations and accepted codes of good practice.
