7-52 
Cause Confirmation  Confirmation Result  Solution 
4. Access the FCS screen 
(refer to 4.6.5), set 
Electromagnet 1 and EFPM 
Electromagnet 1 to ON, and 
then set Electromagnet 2 
and EFPM Electromagnet 2 
to ON. 
corresponding 
electromagnet does 
not change, or 
changes from ON to 
OFF. (Normally, the 
electromagnet status 
changes from OFF to 
(1) Replace the 
electromagnets of the 
BFCS door (refer to 
11.1.5). 
(2) If the problem persists, 
replace the EFCS control 
board (refer to 11.3.1). 
BFCS door 
automatically 
open (which is 
normal in BFCS 
ventilation 
mode) 
1. Check whether the BFCS 
door can be fully closed (the 
rear cover surface is aligned 
with the housing surface). 
cannot be fully closed 
due to deformation 
(caused by aging or 
improper 
(1) Replace the BFCS door 
(refer to 11.1.5). 
(2) If the problem persists, 
proceed with step 2. 
The BFCS door can 
be fully closed. 
Proceed with step 2. 
2. Select Setup > Service > 
Data Monitors > FCS to 
access the flowmeter data 
monitoring screen. Observe 
the status of Electromagnet 
1 and Electromagnet 2. 
Electromagnet 1 and 
Electromagnet 2 is 
Replace the BFCS door 
(refer to 11.1.5). 
Electromagnet 1 and 
Electromagnet 2 
blinks and is 
Replace the EFCS control 
board (refer to 11.3.1). 
BFCS 
switchover 
failure 
the screen to cancel the 
operation, turn the needle 
valve counterclockwise by 
one round, and then close 
the door. Open the BFCS 
door again and start BFCS. 
BFCS can be started. 
needle valve (refer to 
BFCS cannot be 
started. 
Replace the EFCS 
assembly (refer to 11.1.14). 
Insufficient 
BFCS basal 
flow 
Increase the flow of the 
BFCS O2 needle valve 
during BFCS ventilation of 
the machine. 
always less than 0.5 
Replace the EFCS 
assembly (refer to 11.1.14). 
increases as you 
needle valve (refer to 
 
7.4.9 Electronic Vaporizer Failures 
Cause Confirmation 
Solution 
No response after 
the electronic 
vaporizer is 
installed 
1. Reinstall the electronic 
vaporizer in place. 
The vaporizer can 
be started. 
The problem is solved. 
The vaporizer 
cannot be started. 
Proceed with step 2 to 
continue with the check. 
2. Install the electronic 
vaporizer in another slot. 
The vaporizer can 
be started. 
Replace the electronic 
vaporizer base interface