Operating and service manual
166 of 222 pages
912
Battery voltage HI
Log
Description
High Battery Voltage
Cause
Trouble
shooting
Possible causes:
•
Battery defect.
•
Battery cables defect.
Accompanied alarms:
•
AL 801 will be activated during FT- or PTI test.
Trouble shooting:
1) Check that cables for the battery are not damaged and in contact with other
voltages. If so replace the battery.
Criteria
Battery voltage above warning limit for high battery voltage 10 V
Controller
action
None
Log
X
Alarm
Alarm light
Off
Consequence
If main power is removed, data logging may not be possible
Elimination
Log data
Parm 1
Parm 2
Parm 3
Parm 4
Parm 5
Active/Inactive Low limit High limit
Actual
Internal Voltage Reference Alarms
951
Power ref LO
Warning
Description
Controller Internal Voltage Reference Fault
Cause
Indication of controller internal voltage reference fault
Trouble
shooting
Possible causes:
•
Defect power supply for controller PCB.
•
Defect sensor pulling power supply down.
•
Defect controller PCB.
Accompanied alarms:
•
There may be sensor alarms.
•
AL 801 will be activated during FT- or PTI test.
Trouble shooting:
1) Check if there are other active (sensor) alarms. Clear these alarms first
using their trouble shooting.
2) Check voltage level of 24 V AC and 5 V signals to see if power supply has a
short circuit or other damages. If OK, the controller PCB is defect. Replace
controller door.
Criteria
Reference ref below 2.25V DC
Controller
action
None
Log
X
Alarm
Alarm light
Off
Consequence
Elimination
Log data
Parm 1
Parm 2
Parm 3
Parm 4
Parm 5
Active/Inactive Low limit High limit
Actual value A/D channel
The measured voltage is internal on the controller PCB and cannot easily be measured