User Manual HTS801
Humidity and Temperature Sensor for High Humidity and Chemically Polluted Conditions | 46
7 Maintenance and Service
7.1 Self Diagnosis and Error Messages
7.1.1. Error Messages on the Display
Error Description
Error Code (Display)
Error Category
Recommended Action
Voltage out short circuit - output 1 only*
1.x
1
Check the wiring of the outputs
Current loop open - output 1 only
2.x
Check the wiring of the outputs
RH sensor polluted
3.x
Clean the sensor
Hardware error
5.x
2
Return the faulty unit to E+E
for service
6.x
8.x
Temperature measurement failure
7.x
Humidity measurement failure
9.x
10.x
For all other error codes accurring on the display, please contact the E+E service team.
* not available with 0 - 1 V output
Tab. 14
Overview of error codes
Error Category
Description
1
Non-critical
error
, can be solved by the user.
▪.
The display blinks and the buzzer beeps every 10 seconds.
▪.
The red status LED lights continuously.
2
Critical error
, return the device to E+E for service.
▪.
The display blinks and the buzzer beeps continuously.
▪.
The red status LED flashes.
Tab. 15
Explanation of the error category
7.1.2. Status and Error Messages via LEDs
Four status LEDs placed on both sides of the PCB next to the USB service interface. The USB connector is
accessible after removing the blind cover.
PCB
LED 1
LED 2
LED 4
LED 3
Current output
Error LED
Error LED on = error category 1
Error LED flashes = error category 2
Voltage output
Power supply/
main board
USB
LED 5
ARC LED
ARC LED on = ARC active
ARC LED off = ARC inactive
Fig. 43 Status LEDs
