Biral A 802 Instrucciones De Instalación Y Funcionamiento página 90

90
Fault
The pump is operating
again after being
shut down due to a fault.
– red message light is lit
– green message light is lit
The pump has been set
to the «Stop» mode
after being shut down
due to a fault.
– red message light is lit
– green message light
is flashing
Noise in the system.
– green message light is lit
Pump is making noises
– green message light is lit
Radiators do not heat up
Short circuit when switching
on the pump
english
Cause
The pressure
and temperature sensor
is defective.
The pump was automatically
restarted following a temporary
malfunction.
The pressure
and temperature sensor
is defective.
The pump was automatically
restarted following a temporary
malfunction.
Air in the pump.
Pump too powerful
Air in the pump
Feed pressure is too low.
Cavitation
Pump too weak
Air in the pump
Frequency converter
wrongly connected
Motor defective
Subject to technical modifications
Remedy
Check the sensor connection.
Replace the sensor if necessary.
Acknowledge the fault message.
Check the sensor connection.
Replace the sensor if necessary.
Acknowledge the fault message.
Vent the heating unit
and add water if necessary.
Set lower characteristic curve
See Section 7.3
Install smaller pump
Vent system several times
with pump switched off.
See Section 6.2
Increase feed pressure
and/or check gas volume
in the expansion vessel
(if present) and
adjust if necessary.
Increase system pressure/
reduce temperature
See Section 12
Set higher characteristic curve
see Section 7.3
Possibly switch to
«Constant Pressure» control
Install more powerful pump
Vent system
with pump switched off.
See Section 6.2
Connect correctly
Replace pump