7-5 
c)    If yes, replace the bag arm (refer to 11.5.1). 
d)    If not, replace the sealing ring of the bag arm (refer to 11.5.1). 
e)    If the problem persists, replace the APL valve (refer to 11.5.1). 
f)    If the problem persists, replace the circuit (refer to 11.5.1). 
 
7.3 Technical Alarms 
A technical alarm, as apposed to a physiological parameter alarm, is an alarm condition that 
exists no matter whether a patient is connected to the machine. Technical alarms include: 
  Power-on self-test alarms 
  CPU board runtime alarms 
  Power board runtime alarms 
  Electronic flowmeter and BFCS runtime alarms 
  VCM runtime alarms 
  Electronic vaporizer runtime alarms 
  AGSS module runtime alarms 
  Auxiliary O2/air module runtime alarms 
  HFNC module runtime alarms 
  Internal AG module runtime alarms 
  Plug-in module runtime alarms 
Before troubleshooting the anesthesia machine, check for technical alarm messages. If a technical 
alarm is generated, evaluate the alarm first. 
The following sections detail how to troubleshoot technical alarms related to the modules 
mentioned above. 
For detailed information on possible causes for other alarm and prompt messages, see the user 
manual. 
7.3.1 Power-On Self-Test Alarms 
or software version 
High 
The incompatible firmware 
version is installed. 
Upgrade the software to the latest 
version (refer to Chapter 6). 
Bundle version: 
timeout 
High 
The self-test result cannot be 
obtained due to the internal 
communication error. 
Check the self-test record, identify 
the module that encounters the 
self-test timeout problem, and 
clear the module self-test timeout 
alarm according to this section 
Electronic 
flowmeter self-test: 
Error 
High 
2. Protection module selftest 
error 
3. Self-test error of the O2 
limb proportional valve   
4. Self-test error of the 
balance gas limb 
proportional valve   
5. O2 limb flow leak 
6. Balance gas limb flow 
leak 
7. Zero point reading error 
1. Power on the machine again for 
a self-test. 
2. If the problem persists, enter the 
standby state, check the alarm or 
log to locate the error code, and 
handle the problem based on the 
error code by referring to7.3.4.1.