05.10.2022
Page 27 / 86
Ecomod Heat Pump Control -
Installation and Servicing
Other symptoms
Description
1st diagnostic
No display on the LCD interface
Ecomod Heat Pump Control fuse fault
Look for the origin of the overload,
correct the fault, then replace the
fuse.
The display is always coming
on and going out.
Spurious supply on the BSB internal
bus.
Incorrect accessory connection
on the CL+/CL-/G+ connector
(Navipass, etc.).
"No connection" display.
Communication error on the BSB
internal bus.
Check the connection of the screen
and regulation ribbon cables and
the accessories connected to CL+/
CL-/G+ (Navipass Modbus)
Operation button is locked in
stand-by.
Cannot select the heating circuit or
hot water mode from the front panel
buttons.
Cannot control heating or hot water
production from the controller
regulation system.
Operation is locked in stand-
by.
Cannot perform actions using front
panel buttons.
Screen locking is enabled. It can
be disabled from the user interface
menu in parameter 26.
Programming is locked in
stand-by.
Programming cannot be changed.
Programming locking is enabled.
From the parameter to change,
press OK and ESC together for 5
seconds.
Special
programmes
code
Special programmes description
308
Enable output test via parameter 7700
311
Heat pump test enabled
