Mindray WATO EX-55Pro, Service Manual

Page: 266 / 474

8-12
8.2.5 VCM Board Runtime Alarms
Message
Alarm
Priority
Cause Solution
Aux Control
Module Comm
Stop
High
The CPU board cannot
communicate
normally with the Aux
Control module for
10s consecutively.
1. Restart the anaesthesia machine.
2. Reconnect the communication cable.
3. If the problem persists, replace the ventilator
control board.
4. If the problem persists, replace the CPU
board.
Ventilator
Voltage Error
High
5 V or 12 V voltage
error
1. Restart the anaesthesia machine.
2. Measure the supply voltage of the VCM
board to ensure that the supply voltage is
within the valid range. Check whether the
cable fails.
3. If the supply voltage is out of range, replace
the power board or cable.
4. If the problem persists, replace the VCM
board.
PEEP Valve
Failure
Medium
1. PEEP valve voltage
error
2. PEEP valve
pressure error
1. Check whether the accuracy of the PEEP
sensor is within the valid range. On the
[Maintenance] menu, calibrate the sensor or
update the PEEP sensor.
2. Test the voltage at the corresponding testing
point.
3. Check the installation of and connection
between the power cable and expiratory valve
assembly.
4. When necessary, replace the VCM board.
5. When necessary, replace the expiratory
valve assembly.
6. When necessary, replace the power board.
Insp Valve
Failure
Medium
1. Inspiratory valve
voltage error
2. Inspiratory valve
flow error
1. Check whether the accuracy of the
inspiratory flow sensor is within the valid
range. On the [Maintenance] menu, calibrate
the flow sensor. Or, when a flow error occurs,
replace the flow sensor.
2. Test the voltage at the corresponding testing
point.
3. Check the installation of and connection
between the power cable and expiratory valve
assembly.
4. When necessary, replace the VCM board.