29
DMH - DMH_C - DMV
EN
UMIDOSTATO
DEUMIDIFICATORE/TERMOVENTILANTE
TERMOSTATO
250mA
ID3
ID4
LED 3 (YELLOW)
LED 2 (RED)
ALARM TYPE
ALARM CODES THAT CAN BE
ASSOCIATED
no alarm
no code
non-serious alarm
E03 / E04 / E07
serious alarm
E01 / E02 / E05 / E06
Note: non-serious alarms do not block the functioning of the unit, though they require a check of functioning conditions; serious alarms fully block the
functioning of the unit.
ALARM CODE
MEANING
RECOMMENDED ACTION
E01
Tripped high pressure switch
Check the operating limits
E02
Tripped low pressure switch
Check the operating limits
E03
Air temperature not within the limits
Check the operating limits
E04
Water temperature not within the limits (dehumidifier mode)
Check the operating limits
E05
Water inlet temperature S1 probe broken or disconnected
Repair or replace
E06
Air inlet temperature S2 probe broken or disconnected
Repair or replace
E07
Water temperature not within the limits (forced air heater
mode)
Check the operating limits
Note: all alarms are automatic-reset alarms and simultaneous alarms can be displayed by pressing the SET button; if alarms E01 and E02
occur with a frequency beyond the preset one, they become alarms with a manual reset.
FUNCTIONING MODE
If the digital input ID4 is open, the unit
acts as a real summer dehumidifier, acti-
vating, if required by humidistat (digital
ID3 input closed), both the compressor
and the fan. When the unit setpoint is
satisfied, the compressor and the fan are
switched off, possibly with a preset delay.
This mode is indicated by the bEU label
The unit can also work as a winter venti-
lator, even if a summer / winter bipolar
switch is used, which closes the digital
input ID4 which automatically disables
the compressor; it must be connected
as shown below, where the thermostat
provides the heating consent (switch and
thermostat not supplied)
This mode is indicated by the FAn label.
In both operating modes, the on-board
electronics follow two controls on the
water and air inlet temperatures, to verify
that these are compatible with the chosen
operating mode.
DEHUMIDIFIER/FORCED AIR HEATER
HUMIDISTAT
THERMOSTAT