7-6
8. Leak of the check valve
on the balance gas limb
9. Air 3-way valve self-test
error
10. N2O 3-way valve
self-test error
11. O2 switch valve self-test
Electronic
flowmeter self-test:
Timeout
High
The self-test result cannot be
obtained due to the internal
communication error.
1. Power on the machine again for
a self-test.
2. If the status screen encounters
the black screen, blank screen, or
communication error, rectify the
fault of the auxiliary screen (refer
to 7.2.1 and 7.3.2).
3. If the problem persists, open the
service door (refer to 8.1.1), and
reconnect the cable between the
backplane and the flowmeter
assembly. (For the cable position,
refer to 8.12.)
4. If the problem persists, replace
the electronic flowmeter board
BFCS self-test
error
High
valve is faulty.
2. The monitored status of
the two microswitches that
identify the position status
of the mechanical door is
inconsistent.
3. The electromagnet
voltage is beyond the normal
range, or its control status is
inconsistent with the
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 to 7.6.5.2.
VPM self-test:
Error/VPM
self-test: Failed
High
1. An error occurs to the
CPU, EEPROM, or WTD.
2. After power-on, the CPU
board cannot communicate
with the VPM.
1. Power on the machine again for
a self-test.
2. If the problem persists, re-plug
the VCM (refer to 8.6.2
).
3. If the problem persists, replace
the monitoring and controlling
assembly (refer to 11.1.11).
VPM self-test:
Timeout
High
The self-test result cannot be
obtained due to the internal
communication error.
1. Power on the machine again for
a self-test.
2. If the status screen has a
communication stop alarm, or
encounters the black or blank
screen error, rectify the fault of the
status screen first (refer to 7.2.1