Vaisala HMT120 - Manual (Page 69)

Chapter 6 ____________________________________________________________ Troubleshooting
VAISALA ________________________________________________________________________ 67
CHAPTER 6
TROUBLESHOOTING
This chapter describes error messages and analog output error behavior,
troubleshooting for possible problems, and provides contact information
for technical support.
Error Codes
HMT120 software includes number of different self diagnostics, such as
flash and program memory checksum, probe communication status,
probe checksum, operation voltage check, oscillator fault check etc.
At startup software checks factory/user settings checksum, program
memory checksum and oscillator fault status. Other checks are made
during runtime. Available error codes are shown in the table below.
Table 7 Error Codes and Texts
Code Description Error Text
1 Probe T measurement error Probe T meas
2 Probe RH measurement error Probe RA meas
3 Probe communication error Probe communication
4 Probe checksum error Probe checksum
5 Probe message form error Probe message form
6 Program's flash checksum error Program code checksum
7 Current settings checksum error (RAM) Settings checksum
8 Factory flash not initialised Factory defaults empty
9 User flash not initialised User defaults empty
10 Voltage is too low to operate correctly Voltage too low
11 Measurements not available Measurements not available
12 Oscillator fault bit active HW fault 1
13 Analog output quantity invalid Analog output quantity invalid
14 Display quantity invalid Display quantity invalid
Error text is shown by using the ERRS command via the serial interface.
In case of using a HMT120 transmitter with display option the error code
is shown at the display in format "ERR:Code-1[.Code-2][.Code-n]".
Multiple errors are separated with a dot between the error codes.