Troubleshooting
108
89217391 Rev. A
©2022 nVent
NOTE
Before contacting the manufacturer, read the chapter "General malfunctions",
check the unit for faults and, if necessary, repair the malfunction.
12.2 General malfunctions
Fault
Cause
Note
No flow / Insufficient flow
detected
The flow meter is defective.
Check the the flow meter and replace it,
if necessary.
The shut-off valves are closed.
Check and open.
The parameter settings of the control
unit are not correct.
Check the parameter settings at the
control unit and correct them, if
necessary.
The filter is fouled.
Check, clean, and replace it, if
necessary.
Medium too warm/too
cold.
Temperature sensor removed from
sensor sheath.
Check.
Insert temperature sensor back into
sensor sheath.
