Mindray A3 - Ventilator Control Board Runtime Alarm

Technical Alarms Check Repair and Troubleshooting
5 - 10 046-001141-00 A5/A3™ Service Manual
5.2.5 Ventilator Control Board Runtime Alarm
Message Priority Cause Solution
Aux Control Module
Comm Stop
High
Lost communication
with CPU board for
10 seconds.
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 auxiliary control module.
4. If the problem persists, replace the CPU Board.
Ventilator Voltage
Error
High
5V or 12V voltage
error
1. Restart the machine.
2. Measure the input voltage (voltage on the power cable) of the
ventilator control module to see if it is within specifications. Check if
the cable is defective.
3. If the input voltage is out of specification, replace the power board
or cable.
4. If the problem persists, replace the ventilator control board.
PEEP Valve Failure Med
1. PEEP valve voltage
error.
2. PEEP valve
pressure error.
1. Check if the pressure of pressure sensor on the PEEP circuit is within
specifications. Perform pressure sensor calibration in the service menu
or replace the sensor on the PEEP circuit when the pressure error.
2. Measure the voltage at the corresponding test point
3. Check the connection between power supply and expiratory valve
assembly
4. Replace the ventilator control board when necessary.
5. Replace the expiratory valve assembly.
6. Replace the power board when necessary
Insp Valve Failure Med
1. Insp valve voltage
error.
2. Insp valve flow
error.
1. Check if the inspiratory flow sensor is within specifications. Perform
flow sensor calibration in the service menu or replace the flow sensor
when the flow error.
2. Measure the voltage at the corresponding test point.
3. Check the connection between power supply and expiratory valve
assembly.
4. Replace the ventilator control board when necessary.
5. Replace the expiratory valve assembly.
6. Replace the power board when necessary.
PEEP Safety Valve
Failure
Med
PEEP safety valve
voltage error.
1. Measure the voltage at the corresponding test point.
2. Check the connection between power supply and expiratory valve
assembly.
3. Replace the ventilator control board when necessary.
4. Replace the expiratory valve assembly.
5. Replace the power board when necessary.
Flow Sensor Failure Low
1.Insp flow is out of
range.
2.Exp flow is out of
range.
3.Internal Flow
sensor is
disconnected
1. Check if the zero point of the flow sensor is within specifications.
2. Check if the measurement performed by the flow sensor is within
specifications.
3. Replace the flow sensor and perform calibration.
4. Check cable connection between the ventilator inside sensors. Plug
in and out the cables again. Replace the sensor when necessary.
5. Replace the ventilator control board and perform calibration.
Check Flow Sensors High
1.Insp reverse flow
2.Exp reverse flow
1. Check the check valve.
2. Check if the sampling lines of the sensor are connected in correct
order.
3. Test the measurement status of the sensor in the valves test tool.