Vaisala HMP230 - Manual (Page 135)

HMP230 SERIES
M210225en-B Appendix 5: Error messages
129
E21 PRB EEPROM ackn. error
- no connection to the EEPROM including calibration information can be
formed. Send the transmitter to Vaisala for repair.
E22 PRB EEPROM checksum error
ackn. error = EEPROM is faulty
checksum error = check sum is erroneous
- possibly due to an electrical disturbance an erroneous calibration parameter
value or an incorrect checksum has been stored in the EEPROM including the
calibration information. Change any parameter value, e.g. RH offset: check the
value with command L, write it down and then change it with command LI.
Return the previous value with command LI and give command RESET, or
turn the power off and then on again. If the error message no longer appears,
check the transmitter reading and if it seems to be in order, the transmitter can
be taken into use again. Should the message re-appear repeatedly, send the
transmitter to Vaisala for repair.
The LEDs display these error types as follows:
¡l¡¡ CPU EEPROM error
l¡¡¡ input hybrid error