Vaisala HMP240 - Manual (Page 116)

HMP240
Appendix 6: HMP243 wiring diagram
M210300en
114
- the humidity measurement cannot be completed. Check the HUMICAP
sensor and humidity measurement wires and their solderings on the
component board (TP9,TP10 and TP11/15). If you cannot find any faults, send
the transmitter to Vaisala for repair.
E46 f (Ud2 ) out of range
- the measurement hybrid is probably damaged. Send the transmitter to
Vaisala for repair.
E47 f (Uk1 ) out of range
- the measurement hybrid is probably damaged. Send the transmitter to
Vaisala for repair.
E48 f (Uk2 ) out of range
- the measurement hybrid is probably damaged. Send the transmitter to
Vaisala for repair.
The LEDs display these error types as follows:
¡¡
¤¤
no frequency at all
¡¡
¤
¡ a frequency missing from the RH channel
¡¡¡
¤
a frequency missing from the T channel
The second error type indicates erroneous y-values (used in internal calcula-
tions):
Display: Serial bus:
E51 T y-value out of range
- the temperature measurement cannot be completed. Check the temperature
sensor when only a humidity probe is used, and both temperature sensors if
also an additional temperature probe is used. Check also the temperature
measurement wires and their solderings on the component board