
User's Guide ______________________________________________________________________
152 _________________________________________________________________ M210566EN-J
Table 32 Error Messages
Error Code Error Message Action
E0 Humidity sensor measurement
malfunction.
E1 Humidity sensor short circuit
Check the integrity of the humidity probe
and the probe cable. Clean the probe from
dirt, water, ice or other contaminants.
E2 Humidity sensor open circuit
E3 Temperature sensor open circuit.
Check the integrity of the humidity probe
and the probe cable.
E4 Temperature sensor short circuit.
E5 Temperature measurement
malfunction
Check the integrity of the humidity probe
and the probe cable. Clean the probe from
dirt water, ice or other contaminants.
E6 Temperature sensor current
leak.
Check the integrity of the humidity probe
and the probe cables. Clean the probes
from dirt, water, ice or other contaminants.
E7 Internal ADC read error Internal transmitter failure. Remove the
transmitter and return the faulty unit to
Vaisala Service.
E8 Additional temperature sensor
short circuit
Check the integrity of the temperature
probe and the probe cable. Clean the
probe cable from dirt, water, ice or other
contaminants.
E9 Checksum error in the internal
configuration memory
E10 Internal EEPROM read error
E11 Internal EEPROM write error
Internal transmitter failure. Remove the
transmitter and return the faulty unit to
Vaisala Service.
E12 … E13 Add-on module 1 (or 2)
connection failure
Turn off the power and check the module
connection. Turn on the power.
E14 Device internal temperature out
of range
Ensure that the operating temperature is
within the valid range.
E15 Internal RAM memory or
software checksum error
Internal transmitter failure. Remove the
transmitter and return the faulty unit to
Vaisala Service.
E18 Internal ADC reference voltage
out of range
E19 Internal analog output reference
voltage out of range
Internal transmitter failure. Remove the
transmitter and return the faulty unit to
Vaisala Service.
E20 … E22 Configuration switches for
analog output 1/2/3 set
incorrectly
Check and re-set the switches, see page
55.
E24 … E25 Internal error in add-on module
1 (or 2)
Disconnect the power and check the
module connection.
E26 Communication module installed
in incorrect add-on module slot
Disconnect the power and change the
communication module to another module
slot.
E28 … E29 Unknown/incompatible module
installed in add-on module slot 1
(or 2)
Ensure that the module is compatible with
the HMT330.
E30 Internal analog voltage out of
range
Internal transmitter failure. Remove the
transmitter and return the faulty unit to
Vaisala Service.
E31 Internal system voltage out of
range
Check that the supply voltage is correct
and the power supply can provide enough
power for the instrument.
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