Immergas Hydro 3 - Page 60

60
5.3 THE FOLLOWING SYMPTOMS DO NOT
CONSTITUTE A PROBLEM FOR THE FAN
COIL.
Symptoms Status
e system does not work.
• e fan coil does not start immediately aer the ON/OFF key is pressed on the remote control.
If the operation LED ashes, the system is in normal condition.
Changing to “FAN” mode during
cooling mode.
• To prevent the internal evaporator from freezing, the system automatically changes to “FAN”
mode and then returns to cooling mode aer a few moments.
• If the room temperature drops to the set-point, the indoor unit changes to “FAN” mode. e
same applies to the heating mode.
White fog is coming out of the
unit.
• When, during cooling, the humidity level is particularly high. If the inside of the indoor unit
is extremely obstructed, distribution of the temperature in the room becomes irregular. In this
case, the inside of the indoor unit needs cleaning. Call your dealer for more information. is
operation must be carried out by qualied sta.
Fan coil cooling noise.
• When the system is in cooling mode or is stopping, a low and continuous “hiss” can be heard.
is noise can be heard when the drain pump (optional accessory) is running.
• When the system stops aer a heating operation, a sharp sound can be heard. is noise is
produced by the expansion and contraction of plastic parts caused by a variation in the tempe-
rature.
• A continuous and low “hiss” might be heard when the fan coil is running. is is caused by the
water ow.
• A low hiss might be heard when the unit is started or as soon as it has stopped: this is caused
by a variation in the water ow or it stopping.
Dust is coming out of the unit.
• When the unit is used for the rst time aer a long time. is occurs because there is dust inside
the unit.
e unit can give o a bad smell. • e unit absorbs the smells of the rooms, furniture, cigarettes, etc. and re-emits them.
e fan does not turn. • During operation. e fan speed is controlled so as to optimise system operation.