Operation Manual
27
EG
AUTO-DIAGNOSIS TABLE
Error Cause LED
BLUE YELLOW RED
1 Error on outdoor unit
F
3 Communication error with outdoor unit F F F
4 Sensor REFRIGERANT OUT damaged or
disconnected
FF
5 Sensor H2O IN damaged or disconnected
FF
6 Sensor H2O OUT damaged or disconnected F
8 Electrical heaters not set F
9 Reversed refrigerant tubes error F
10 Sensor REFRIGERANT IN damaged or
disconnected
F
11 Tank sensor (1/3) damaged or disconnected
F
12 Tank sensor (2/3) damaged or disconnected
F
F flashing LED
LED ON
LED OFF
CARE AND MAINTENANCE
In order to ensure optimum ef ciency of the product it is necessary to make the following checks annually:
• check of expansion vessel’s pressure;
• check of mineral salts or polyphosphate treatment system; it is recommended to replace them when they remain just
under a centimeter;
• check of any impurities present within the lter of the water supply system;
• check of magnesium anode’s integrity and replacement, if necessary (even every 6 months).