Vaisala HMW90 - Manual (Page 97)

Appendix A _________________________________________________________ BACnet Reference
VAISALA ________________________________________________________________________ 95
Reliability
Table 26 Reliability
State Cause
0 NO_FAULT_DETECTED
1 NO_SENSOR No contact to measurement module
2 OVER_RANGE T over +80 °C
3 UNDER_RANGE T under -40 °C
7 UNRELIABLE_OTHER Other measurement error
Event State
Table 27 Event State
State Cause
0 NORMAL Reliability equals 0 (NO FAULT
DETECTED)
1 FAULT Reliability not 0
Out of Service
Out of Service value is writable. By Default = FALSE.