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Fault
Turbine operation
LED: flashes red
SSM relay: opened
iPWM out: 85%
LIN: Error 09
Modbus: Error 119
Rotor blocked
LED: flashes red
SSM relay: opened
iPWM out: 5%
LIN: Error 20
Modbus: Error 10
Warning
Dry run
LED: flashes red/green
SSM relay: closed
iPWM out: -
LIN: Warning 17
Modbus: Warning 11
Overload
LED: flashes red/green
SSM relay: closed
iPWM out: 80%
LIN: Warning 18
Modbus: Warning 21
Excessive temperature
control module
LED: flashes red/green
SSM relay: closed
iPWM out: -
LIN: Warning 19
Modbus: Warning 30
Undervoltage mains
voltage
LED: flashes red/green
SSM relay: closed
iPWM out: 80%
LIN: Warning 24
Modbus: Warning 4
No bus communication
LED: flashes green
SSM relay: closed
iPWM out: -
LIN: -
Modbus: -
Installation and operating instructions • Wilo-Para MAXO/-G/-R/-Z • Ed.04/2024-11
Causes
Pump does not start.
The pump cannot start due to negat-
ive flow through.
Pump off.
Rotor blocked. The deblocking routine
tries to deblock the pump.
The pump is on and running, but air
has been detected in the pump.
The pump is on and runs at a speed
lower than expected.
The pump reduces the power (speed)
to limit the current consumption of
the motor. The pump continues to
run.
High friction due to mechanical ageing
of particles in the fluid
The pump is on.
Temperature of the control module is
too high.
The pump is on.
Power supply on mains side too low.
The pump is on.
Pump is configured via bus commu-
nication, but it does not receive a sig-
nal.
Remedies
Check installation.
The pump switches on once the nor-
mal state is reached.
Wait for the deblocking routine.
Fill the system or vent the pump.
Clean or replace the fluid.
Let the ambient temperature to cool
down.
Check power supply.
Check the bus cable.
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