User Manual
EE381
Page 12
6. Maintenance
6.1 Cleaning the Sensing Head / Filter Replacement
If required, the sensing head can be cleaned. Please find the E+E Cleaning Instructions at www.epluse.com/EE381.
6.2 Self-diagnosis and Error Messages
Self-diagnosis via LED on the circuit board:
Power LED (green):
ꟷ flashing
Supply voltage applied / Microprocessor is active
LED D1 (blue):
ꟷ constantly lit
sensing element damaged
ꟷ flashing
sensing element bedewed (condensation)
Self-diagnosis via display (option):
ꟷ Error 1
Humidity sensing element damaged
ꟷ Error 2
Humidity sensing element bedewed (condensation)
ꟷ Error 3
Temperature sensing element damaged
ꟷ Error 4
Short circuit of temperature sensing element
LED D1 blue
Power LED green
