Error Messages - Extech Instruments AN340 User Manual

Error Messages
Meter will not switch ON
 Press the power button firmly for at least 0.1 seconds
 Check that the batteries are installed, fresh, and correctly oriented
 Remove one battery for one minute to reset the circuit, replace and try again
Display switches OFF
 The battery voltage may have dropped below operational requirements. Check the
batteries and replace if necessary
 The automatic power OFF (sleep mode) function may have switched the meter OFF.
Switch the meter ON and if it does not power up replace the batteries and try again.
E2 Error
The reading is lower than the low range limit. Test the meter in an environment known to be
within acceptable meter limits. If error persists, send the unit to Extech for repair.
E3 Error
No field solution. Return the unit to Extech Instruments for repair.
E4 Error
The reading is higher than the high range limit. Test the meter in an environment known to be
within acceptable meter limits. If error persists, send the unit to Extech for repair.
E31 Error
Temperature related circuit error. Return the meter to Extech Instruments for repair.
E32 Error
Memory IC error; reboot the meter and check it again; send it to Extech Instruments for repair
if the error message persists.
E33 Error
RH measurement circuit failure; return the unit to Extech Instruments for repair.
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