TROUBLESHOOTING
7-7
7.2 Possible Problems & Solutions
Problem Possible
Reason
Possible
Solution
No power after
charging battery
Drained battery
Defective battery
Microprocessor
hang-up
Charge battery
Replace battery
Disconnect then
reconnect battery to
reset computer
No LED or LCD
backlight
Defective LED or
LCD backlight
Call authorized
service center
Lost password
Forgot password
Call authorized
service center
Buzzer inoperative
Defective buzzer
Call authorized
service center
Reading abnormally
high
Wrong calibration
data
Dirty PID sensor
Dirty water trap filter
Excessive moisture
and/or water
condensation
Calibrate with gas
again
Reduce pump duty
cycle
Replace water trap
filter
Blow dry sensor
modules
“Lamp” message
during operation
Wrong threshold
Dirty PID sensor
Weak or defective
PID lamp
Adjust lamp
threshold
Replace PID sensor
(Continued)