Operation Manual
14
HDO
bar
SELECT
°C
IN
OUT
(ENTER)
O/I
°C
O/I
(MENU)
°C
SELECT
(ENTER)
O/IO/I
(MENU)
HDO
bar°C
OUT
°C
IN
°C
DHW temperature
setting
buttons
DHW
heating
on/off
Button for
the display mode
and mode
and parameters
settings
7x LED indication
for the selected
functions
Heating
temperature
setting
buttons
Heating
on/off
buttons
5
6
2
4
1
3
7
LED display
♦ Error indication
ERROR MESSAGES:
Error code
Type of defect
E.00 NO DEFECT
E.01 DEFECT ON THE POWER RELAY CONTACT
E.02 LOW PRESSURE (detected by the analogue pressure sensor)
E.03 BLOCKING ELEMENT
E.04 HEATING WATER (TOP) NTC TEMPERATURE SENSOR DEFECT
E.05 DHW (TUV) NTC TEMPERATURE SENSOR DEFECT
E.06 EMERGENCY THERMOSTAT (manual reset directly on the thermostat!)
E.07 OUTDOOR/ROOM TEMPERATURE SENSOR DEFECT
E.08 reserve
E.09 PRESSURE SENSOR DEFECT – analogous pressure sensor
E.10 COMMUNICATION PROBLEM between boilers in the cascade – master boiler
E.11 COMMUNICATION PROBLEM between boilers in the cascade – slave boiler
- past defects register (1–20)
Apart from the E.06 defect (emergency thermostat temperature becomes exceeded), all other defects shut down
the boiler and bring it to the defect state (heating bars become disconnected) which is automatically revoked
only after the defect has been removed. The boiler's operation is then automatically re-initiated.
Defect detected by the emergency thermostat is irreversible (the thermostat is equipped with manual
reset function which can be used only by an authorized service worker after the defect has been properly
detected and addressed).