Pollet Pool Group InverPro IP20 Manuel D'installation Et D'utilisation page 26

7.3 Undervoltage protection
When the device detects that the input voltage is less than 200V, the device will limit the current running speed.
– When input voltage is less than or equal to 180V, the running capacity is limited to 70%;
– When the input voltage range is 180 to 190V, the running capacity is limited to 75%;
– When the input voltage range is from 190V to 200V, the running capacity is limited to 85%.
Problem
Pump does not start
Pump won't prime
Low water flow
Pump being noisy
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Corrective solution
– Power Supply fault, disconnected or defective wiring.
– Fuses blown or thermal overload open.
– Check the rotation of the motor shaft for free movement and lack of
obstruction.
– Because of long time lying idle. Unplug the power supply and manually
rotate motor rear shaft a few times with a screwdriver.
– Empty pump/strainer housing. Make sure the pump/strainer housing is filled
with water and the O ring of cover is clean.
– Loose connections on the suction side.
– Strainer basket or skimmer basket loaded with debris.
– Suction side clogged.
– Distance between pump inlet and liquid level is higher than 2m, height of
pump installation should be lowered.
– Pump is not primed.
– Air entering suction piping.
– Basket full of debris.
– Inadequate water level in pool.
– Air leak in suction piping, cavitation caused by restricted or undersized
suction line or leak at any joint, low water level in pool, and unrestricted
discharge return lines.
– Vibration caused by improper installation, etc.
– Damaged motor bearing or impeller (need to contact the supplier for repair).