44
PROBLEM
Pump
always
running
even
when
not
required
Messaggio
Causa
intervento
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
Messaggio
Causa
intervento
none
Flow
rate
sensor
fault
Check
the
flow
rate
sensor
PROBLEM
Low
pump
performances
Messaggio
Causa
intervento
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:
1. MAKE THE FACTORY PARAMETERS RESET BEFORE STARTING THE INVERTER
(parameter SET.F at page 11 of the Manual)
