44
PROBLEM
Pump always running even when not required
Message
Cause
intervention
None
System leaks greater then 2 l/min
Identify the leaks and repair
None
Flow sensor fault or locked open
Inspect and check the flow sensor
PROBLEM
The pump stops too soon when requested
Message
Cause
intervention
none
Flow rate sensor fault
Check the flow rate sensor
Message
Cause
Message
Cause
intervention
none
Air inside suction manifold
Bleed the suction system
none
Pump blocked or damaged
Inspect the pump and eliminate the problem
MAINTENANCE
Replacement of the CONTROL BOARD + PRESSURE SENSOR
- Disconnect the inverter main power supply and wait 2 minutes (capacitors discharge)
- Open the front cover and disassembly the pressure sensor and the control board as shown below
- Install the new control board with pressure sensor in reverse order of removal.
Open the front cover by unscrewing the 4 screws
Before removing the cover, disconnect the
ribbon cable of the display
Disconnect the wire communication with the power
board
Remove FIRST the PRESSURE SENSOR and
THEN the CONTROL BOARD by unscrewing the 5
screws indicated
Re-assemble the new BOARD+SENSOR in the same way but in reverse order:
-
FIRST assemble the CONTROL BOARD
-
THEN assemble the PRESSURE SENSOR
-
connect the wire communication with the power board
-
connect the ribbon cable of the display and close the front cover
ATTENTION:
