Vaisala HMP42 User Manual download pdf (Page 47)

HMI41 AND HMP42

M210317EN-A Operating Manual

10. IN CASE OF ERROR

The HMI41 goes through a continuous self-diagnostic procedure. If any

problems occur, it displays the corresponding error message:

where nn = the number indicating the error

Whenever you come across an error message or your indicator does not

function as it should, first check that the probe is correctly connected. Then

check that the filter and the steel grid are clean.

10.1 Trouble shooting

In the following, a short list for trouble shooting:

PROBLEM: WHAT TO DO:

the display is blank

- check the batteries (see Chapters 3.1 and 9.1)

- if the batteries are ok, contact Vaisala or a Vaisala

representative

the display is dim - during automatic data collecting, the display is dim

except when the readings are updated (once in a

minute)

the readings seem to

be wrong

- allow enough time for the probe to stabilize to

the ambient temperature

- check that the probe is correctly connected to the

indicator

- check that the steel grid and the membrane filter are

clean

- make sure that the measurement point is clean and

that there is no condensated water

- check that the settings are correct (see

Chapter 10.2)

you have accidentally

changed some settings

- enter the setup mode, select the setting with

ENTER and change it with buttons ▲ or ▼ (see

table on the next page). The pressure setting has to

be acknowledged with ENTER.

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Vaisala HMP42 User Manual Page 47