A5/A3â„¢ Service Manual 046-001141-00 5 - 3
Repair and Troubleshooting Technical Alarms Check
5.2 Technical Alarms Check
A technical alarm, as apposed to a parameter alarm, is an alarm condition that exists whether or not a
patient is connected to the machine. Technical alarms include:
• Startup alarm Messages
• CPU Board Runtime Alarm
• Power Board Runtime Alarm
• Fresh Flow Sensor Board Alarm
• Ventilation Control Board Runtime Alarm
• AG module real-time alarm
Before troubleshooting the anesthesia machine, check for technical alarm message. If an alarm
message is presented, eliminate the alarm first.
The following sections detail how to troubleshoot technical alarms related to the modules
mentioned above.
For detailed information on possible causes and actions for other alarm and prompt messages, refer
to the Operator’s Manual.
5.2.1 Startup Alarm Messages
Message Priority Cause Solution
Bundle Version Error
Bundle Version: Time
out
High
The software versions are
not compatible.
1. Update to the compatible software version again.
Flowmeter Voltage
Error
High
DVCC, AVDD or VC voltage
error
1. Restart the machine.
2. Measure the 12V input voltage (voltage on the power
cable) of the electronic flowmeter to see if it is within
specifications. Check if the cable is defective. If the input
voltage is out of specification, replace the power board or
cable.
3. If the problem persists, replace the fresh flow sensor board.
Flowmeter Selftest
Error
'Flowmeter Self Test:
Time out
High
1.CPU, Flash or WTD error.
2.After power on, the CPU
board can't communicate
with the fresh flow sensor
board.
1. Restart the machine.
2. Re-plug or replace the communication cable between the
CPU Board and the fresh flow sensor board.
3. If the problem persists, replace the fresh flow sensor board.
4. If the problem persists, replace the CPU board.
Aux Control Module
Selftest Error
Aux Control Module
Self Test: Time out
High
1.CPU, Flash, WTD error
2.After power on, the CPU
board can't communicate
with the auxiliary control
module.
1. Restart the machine.
2. Re-plug or replace the communication cable between the
CPU Board and the auxiliary control module.
3. If the problem persists, replace the auxiliary control
module.
4. If the problem persists, replace the CPU board.
Ventilator Selftest Error
Ventilator Self Test:
Time out
High
1.CPU, TIMER, RAM, WTD,
EEPROM or AD error
2.After power on, the CPU
board can't communicate
with the ventilator control
board.
1. Restart the machine.
2. Re-plug or replace the communication cable between the
CPU Board and the ventilator control board.
3. If the problem persists, replace the ventilator control board.
4. If the problem persists, replace the CPU board.
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