WHISPERFLOXF
®
VS and MAX-E-PROXF
®
VS Commercial Variable Speed Pump Installation and User’s Guide
20
Problem Possible Cause Corrective Action
Pump failure. Pump will not prime - Air leak in suction. Check suction piping and valve glands on any suction
gate valves. Secure lid on pump strainer pot and be
sure lid gasket is in place. Check water level to be sure
skimmer is not drawing air.
Pump will not prime - Not enough water. Be sure the suction lines, pump, strainer, and pump
volute are full of water. Be sure valve on suction line is
working and open (some systems do not have valves).
Check water level to make sure water is available through
skimmer.
Pump stainer basket is clogged. Clean pump strainer basket.
Pump strainer gasket is defective. Replace gasket.
Reduced capacity
and/or head.
Air pockets or leaks in suction line.
Check suction piping and valve glands on any suction
gate valves. Secure lid on pump strainer pot and be
sure lid gasket is in place. Check water level to be sure
skimmer is not drawing air.
Clogged impeller. Turn off electrical power to the pump.
Disassemble (see Pump Disassembly on page 17)
Clean debris from impeller. If debris cannot be removed,
complete the following steps:
1. Remove left hand thread anti-spin bolt and O-Ring.
2. Remove, clean, and reinstall impeller.
3. Reassemble (see Pump Disassembly on page 17)
Pump strainer basket clogged. Clean suction trap.
Clean pump strainer basket.
Pump fails to start. Main voltage is not present. 1. Replace fuse, reset breaker/GFCI.
2. Tighten main wire connections.
Pump shaft is locked. Check if the pump can be rotated by hand and remove
any blockage.
Pump shaft is damaged. Replace pump.
Pump runs then stops. “0004” over-temperature alarm. Check that back of pump is free from dirt and debris. Use
compressed air to clean.
“0017” over-current alarm. Inspect drive to motor connection terminals.
Pump is noisy. Debris in contact with fan. Check that back of pump is free from dirt and debris. Use
compressed air to clean.
Debris in strainer basket. Clean pump strainer basket.
Loose mounting. Check that mounting bolts of pump and pump are tight.
Inadequate circulation. Filter or pump basket dirty. Check pump strainer basket; if logged, turn pump off and
clean basket.
Check and clean pool lter.
Suction/discharge piping is too small. Increase piping size.
Speed is set too slow for proper ltration cycle. Increase ltration run time.
Always disconnect power to the pump at the circuit breaker and disconnect the digital input cable before servicing the pump. Failure
to do so could result in death or serious injury to serviceman, pool users or others due to electric shock. DO NOT attempt to adjust or
service without consulting your dealer or a qualied pool technician. Read the entire Installation & User’s Guide before attempting to
use, service, or adjust the pool ltering system or heater.
TROUBLESHOOTING
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