Repair Work; Faults - Burkert 0911 Instructions De Service

8

REPAIR WORK

8.1

Faults

ERROR MESSAGES
Message
PFo
PFc
HA
LA
EAL
BAL
STATUS OF THE ALARM RELAY
Device status
Device without power
Normal operation
Alarm situation during
operation
ACKNOWEDGING ERRORS VIA THE KEYBOARD
Press any button.
The Alarm message remains on the display as long as the alarm conditions
are present. The device then switches to normal operation.
AUTOMATIC ACKNOWLEDGEMENT OF THE ERROR
• Message PFo and PFc - Room sensor error
After approx. 30 seconds or once the error has been cleared, the
message will be acknowledged automatically. Check the connections
before any replacement of the sensor.
• Messages HA/LA - High/Low temperature alarm
The messages disappear automatically as soon as the normal temperature
range is reached again or if defrosting starts.
• External alarms EAL and BAL are acknowledged after deactivation of the
digital input.
24 - 0911
Cause
Sensor defective or not
connected
Sensor short-circuit
High temperature alarm
Low temperature alarm
Digital input alarm
AS = CL
5 - 6 closed
5 - 6 closed
5 - 6 open
Effect
Alarm relay ON; control circuit
according to So1
Alarm relay ON; control circuit
according to
Alarm relay ON; outputs remain
unchanged
Alarm relay ON; outputs remain
unchanged
Outputs remain unchanged
AS = OP
5 - 6 closed
5 - 6 open
5 - 6 closed