Kotly U 25 Instructions Pour L'installation page 9

GB Fault Finding Chart
Fault
Pump fails to
start
Noise in the
system
Noise in the
pump
Technical data
Mains voltage:
junction line:
Water temperature max.:
Ambient temperature max.:
nominal pressure max.:
Cause
Supply failure
Capacitor is defective
Pump blocked due to
furred bearings
Impurities in the pump
Pump flow setting is too
high
Air in the system
Inlet pressure too low
Remedy
Check fuses and posible loose
electrical connections
Replace the capacitor
Change over tt maximum
speed for a short period or
free the rotor with a screwdri-
ver inserted in the slot of the
shaft end
Dismantie and clean the pump
Change over to a lower
speed
Vent the system
Increase the inlet pressure or
check the air volume in
the expansions tank
(if installed)
1 x 230V~ 50Hz
max. 3 x 1,5mm
110°C
40°C
10bar
2
9