Buderus BUE-Plus Einbau- Und Betriebsanleitung Seite 31

Fault signals
Code Fault
E 04 Undervoltage
E 05 Overvoltage
E 07 Generator
operation
E 10 Blocking
E 11 Dry running
E 21 Overload
E 23 Short-circuit
E 25 Contacting/
winding
E 30 Module over-
heated
E 36 Module defec-
tive
Cause
Power supply too
low on mains side.
Power supply too
high on mains side.
Water is flowing
through the pump
hydraulics, but pump
has no mains volt-
age.
The rotor is blocked
Air in the pump
Sluggish motor
Motor current too
high
Winding defective
Module interior too
warm
Electronic compo-
nents defective
English
Remedy
Check mains
voltage.
Check mains
voltage.
Check mains
voltage.
Contact specialist
technician
Check water quan-
tity/pressure.
Contact specialist
technician
Contact specialist
technician
Contact specialist
technician
Check operating
conditions in chapter
2.
Contact specialist
technician
27