Wilo RAIN3 Notice De Montage Et De Mise En Service page 44

en
Faults
The three-way valve is not work-
ing anymore
Default indication on the control
panel
The system is running with city
main water whereas the rainwater
storage thank is full
The float valve in the break-tank
is not closing/water is draining
through the overflow
Incidents
Maximum pump cycles per
hour
Pressure sensor fault
Dry running RWM
Dry running TWM
Self-priming failure
Max. runtime pump
Break tank overflow
44
Faults, causes and remedies
Causes
Blocked due to sediments on the valve seat
The float switch signal sent to the controller is
wrong because the cable is damaged or the float
switch is blocked inside the rainwater storage
tank
The control panel is in manual mode
Despite the sufficient water level in the tank, the
float switch did not change the supply mode.
The cable is damaged or the float switch is
blocked inside the tank
The system is automatically renewing the water
inside the break-tank (check chapter 7.1)
The float valve is defective or mechanically
blocked
Controller error codes
Error codes Causes
E140 Frequent starts due to
leakage (counter of starts
in specific time)
E40.1 Short circuit or wire break
(signal value out of the
range 4-20mA)
E62.1 No minimum pressure after
MP start/operation within a
specific time in RWM
E62.2 No minimum pressure after
MP start/operation within a
specific time in TWM
No water in suction side
(see dry running)
E141 Maximum permanent op-
eration time is reached,
leakage in system
E66.0 Too much water in break
tank via overflow sensor
Remedies
visual check and, if necessary, dismantle and
clean the valve
Check the contacts or perform a visual control
Restore the correct functioning mode on the
control panel
Check the contacts or perform a visual control
Nothing to do, it's a programmed feature. Check
chapter 6.2.
Perform a visual check, and if needed remove the
break-tank in order to check the float valve
Self-acknow- Following actions
ledging
Error will be generated.
Pump stops, error will be generated.
x If within in specific time there is no min-
imum pressure. The pump keeps on run-
ning and it will be switched over to TWM
for an adjustable time and back again in
RWM. If pressure is increase above min-
imum pressure within an adjustable time
in RWM, system operates normally again.
If pressure could not increases, it will be
switch over to TWM and back again for a
maximum of 5 times per hour. During this
time the pressure value on main screen is
blinking. After 5 times pump stops, error
will be generated.
x pump stops, error will be generated.
(see dry running).
Pump stops, error will be generated.
Forced TWM, error will be generated.
WILO SE 2020-02