12
7.3 Trouble shooting
Problem
Possible causes and solution
Pump does not
start
• 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.
Pump does not
prime
• 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.
Low Water Flow
• Pump does not prime.
• Air entering suction piping.
• Basket full of debris.
• Inadequate water level in pool.
Pump being noisy
• 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).
