Baxi Quantum MAXI, Installation And Operating Instructions Manual, Page: 46 / 64

English
42
Fault messages
Fault Cause Remedy
Pump is not
running although
the power supply
is switched on
Electrical fuse
defective
Check fuses
No voltage supply to
the pump
Resolve the interruption to
the power supply
Pump is noisy Cavitation due to
insufficient suction
pressure
Increase the system supply
pressure within the
permissible range
Check the delivery head
setting and set it to a lower
height if necessary
Building does not
warm up
Thermal output of the
heating surfaces is
too low
Increase setpoint (see 5.3)
Set control mode to
Δp-c
Code Fault Cause Remedy
E 04 Undervoltage Power supply too low
on mains side
Check mains voltage
E 05 Overvoltage Power supply too high
on mains side
Check mains voltage
E 07 Generator
operation
Water is flowing
through the pump
hydraulics but there is
no mains voltage to
the pump
Check mains voltage
E 10 Blocking The rotor is blocked Contact specialist
technician
E 11 Pump running
dry
Air in the pump Check volume flow /
water pressure
E 21 Overload Sluggish motor Contact specialist
technician
E 23 Short-circuit Motor current too high Contact specialist
technician
E 25 Contacting/
winding
Winding defective Contact specialist
technician