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
F
F
5
Sensor H2O IN damaged or disconnected
F
F
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 effi 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 fi lter of the water supply system;
• check of magnesium anode’s integrity and replacement, if necessary (even every 6 months).