Immergas Hydro 3 - Error Codes and Malfunctions

62
Remote control problems and their causes.
Note: check the points in the table below before requesting
service or repairs.
Symptoms Causes Solution
e fan speed cannot be
changed.
Check if the mode indicated on the display is
“AU T O ”.
When automatic mode is selected, the fan coil
automatically changes the fan speed.
Protection from hot air in cooling mode.
Protection from cold air in heating mode.
Reduce the inlet water temperature in cooling
mode, increase it in heating mode.
Check if the mode indicated on the display is DRY.
When DRY mode is selected, the fan coil auto-
matically selects the fan speed. e fan speed can
be selected during COOLING, FAN ONLY and
heating modes.
e remote control signal
is not transmitted, not even
when ON/OFF is pressed.
Check whether the batteries in the remote control
are at.
e supply voltage is not on.
e TEMP. indicator does
not switch on.
Check if the mode indicated on the display is
“FAN ONLY”.
e temperature cannot be set in “FAN” mode.
e indication on the di-
splay disappears aer a few
seconds.
Check if operation of the timer stops when TIMER
OFF appears on the display.
e fan coil will stop working aer the predened
interval.
e TIMER ON indicator
switches o aer the prede-
ned interval.
Check if operation of the timer starts when TIMER
ON appears on the display.
When the predened interval is reached, the fan
coil starts automatically and the corresponding
LED switches o.
e indoor unit does not
emit any sound, not even
when ON/OFF is pressed.
Check if the remote control’s signal transmitter is
properly directed towards the indoor unit’s infrared
signal receiver whenON/OFF is pressed.
Direct the remote control’s signal transmitter
properly towards the indoor unit’s infrared signal
receiver and press ON/OFF twice.
Error codes.
Note: if any of the following malfunctions occur, do not try
to repair the unit yourself but contact your dealer.
Make sure you provide precise information on the type of
fault and the device model.
Codes Description of the errors
E2
T1 evaporator sensor malfunction.
E3
T2 evaporator sensor malfunction.
E7
EEPROM communication error.
E8
DC motor malfunction.