Problem Possible Reasons & Solutions
“Lamp” message during
operation
Reasons
Lamp drive circuit.
Weak or defective PID lamp, defective.
Solutions
Turn the unit off and back on.
Replace UV lamp
"Sen" message during
operation
Reasons
Lamp drive circuit.
Weak or defective PID lamp.
Sensor defective.
Solutions
Turn the unit off and replace the sensor.
Or replace UV lamp of sensor.
Or replace detector of sensor
Handheld PID Monitors 125 User Manual