Page 44
SERVICING AND MAINTENANCE
FAULT FINDING
Faults, Causes and Remedies
The troubleshooting must only be carried out by a qualified specialist, and work on
the electrical connection must only be carried out by a qualified electrician.
Fault signals
• The fault signal LED indicates a fault
• The pump switches off (depending on the fault) and attempts a cyclical restart.
Faults
Cause
Remedy
Pump is not running although the
power supply is switched on
Electrical fuse defective
Check fuses
No voltage supply to pump
Rectify the power interruption
Noisy pump
Cavitation due to insufficient
suction pressure
Increase the system pressure within the permissable
range
Check the delivery head and set it to a lower head if
necessary
Building does not warm up
Thermal output of the heating
surfaces are too low
Increase set point
Change the control mode from Ap-c to Ap-v
LED
Faults
Cause
Remedy
Lights up red
Blocking
Rotor blocked
Active manual restart or contact customer
service
Contacting / winding
Winding defective
Flashes red
Under / over voltage
Power supply too low / high on
mains side
Check mains voltage and operating
conditions, and request customer service
Excessive module temperature
Module interior too warm
Short circuit
Motor current too high
Flashes red /
green
Generator operation
Water is flowing through the
pump hydraulics, but there is
no mains voltage at the pump
Check the mains voltage, water quantity /
pressure and the ambiant conditions
Dry run
Air in the pump
Overload
Sluggish motor, pump is
operated outside of its
specifications (e.g. high
module temperature). The
speed is lower than during
normal operation.
Summary of Contents for BOILERMATE OV PP
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