PROBLEM
The Strainer IC may need
cleaned.
Blockage in valve housing
Isolator switch not working /
not switched on.
Pump circuit has no power
Main power (Isolator switch)
Gulper IC fails
supply OFF /not working.
to operate
Loose wiring connection
Pump circuit has no
power
Fuse blown or loose
electrical connection
Debris under flap valves
/ not seated properly
Failure to
Air leak in intake line
prime - Motor
operates, but
no pump
Punctured pump diaphragm
discharge
Restricted intake or
discharge line
Strainer IC bilge strainer,
not working
Defective/ debris on
Pump fails to
grey waste float switch
turn off when
Insufficient voltage to
required
the pump
Override switch activated
Air leak at pump intake
Debris inside pump and
plumbing
Low flow
Punctured pump diaphragm
Defective electronic control
POSSIBLE CAUSES
POTENTIAL SOLUTION
Unclip the top cover of the Strainer IC, clean and
inspect for debris (Fig 12). Carefully remove the lid
and clean the inside walls, if necessary unscrew the
valve housing assembly for further cleaning.
Check the isolator switch is on and working.
Check electrical connections to ensure pump is
receiving power as normal and free from corrosion.
Check power supply.
Check the isolator switch is on.
Check electrical connections to ensure pump is
receiving power as normal and free from corrosion.
Check there is 12/24 volts from the battery.
Check the in-line fuse & ensure all electrical
connections are tight and free from corrosion. If fuse
has blown, check for reverse polarity, closed valves
or seacocks, then for debris in pump head and clean
out if necessary (refer to installation section).
Replace fuse and run pump.
Turn off electrics and disconnect plumbing
check valves for blockages and remove debris (See
section 14).
Check hose connections are airtight. Open pump
head and check valves and diaphragm (see section
14).
Replace the damaged part using service kit - Part
number AK2050.
Check all hose connections are airtight, free from
blockages, and hose has not collapsed/kinked.
Check Strainer IC is operating properly (see section
13).
Clear debris/ replace float switch.
Check power supply to pump.
Turn off override switch.
Check the hose connections are airtight.
Turn off electrics and disconnect plumbing, check
for blockages and remove (See section 14).
Replace the damaged part using service kit - Part
number AK2050.
Replace pump. If within specified warranty period
contact Whale (see contact details).
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