User Guide

10 Faults, causes and remedies
ENGLISH
10
WARNING!
Electrical shock hazard!
Dangers caused by electrical energy must be excluded.
All electrical work must be performed after the electrical supply has been discon-
nected and secured against unauthorized switching.
WARNING!
Risk of scalding!
At high water temperatures and system pressure close isolating valves before and
after the pump.
First allow pump to cool down.
Problem Causes Remedy
Pump is connected Electrical defect / Check / replace the fuse.
but fails to run. fuse is blown. Should the fuse blow several times in a row:
The green indicator
x
Check the pump for electrical faults.
light is off.
x
Check the pump mains cable and electrical
(Fig.5/6, Pos.2) connection.
Ground fault Switch ground fault interrupter back on.
interrupter has Should the circuit-breaker trip several times
triggered. in a row:
x
Check the pump for electrical faults.
x
Check the pump mains cable and electrical
connection.
Faulty terminal box. Call Customer Services.
Pump is connected Undervoltage. Check the voltage at the pump (observe rating
but fails to run. plate data).
The green indicator
light is on.
(Fig.5/6, Pos.2) Winding damage. Call Customer Services.
Capacitor defect. Replace capacitor (observe rating plate data).
( only 1
~
)
Speed selection Install speed selection connector.
connector not
installed.
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