16
Troubleshooting
Symptom
Cause
Remedy
(1)
No water is being
Water tank is empty
delivered from pump
Check tank level, wait for rain
if empty
No power at outlet
Check power supply, circuit
breakers and plug.
Bad signal from level sensor
Check installation and operation
of the level sensor.
Pump has overheated
Allow pump to cool
Mesh filter is blocked
Switch power off, isolate water
and remove pump barrel union,
inspect/clean/replace fi lter
Pump is worn
Have pump serviced by an
Onga service agent or other
suitably qualifi ed person
(2)
No water is being
delivered from pump:
WaterSwitch has gone
into ‘loss of prime’
Valve on or between tank &
mode
WaterSwitch inlet is closed.
Open gate valve and prime
pump. Reset WaterSwitch
Pump is not primed
Prime pump and reset
WaterSwitch
Mesh filter is blocked
Switch power off, isolate water
and remove pump barrel union,
inspect/clean/replace fi lter
(3)
Mains water valve is closed
No water supply at all
Check mains water isolation
valve is open
Blockage in system
Check mains water and tank
water piping for obstructions
Incoming mains water
pressure is greater than
1000kPa
Fit a pressure reduction valve to
reduce incoming mains pressure
(4)
Poor Water Pressure
Mesh Filters blocked
through pump
Switch power off, isolate water
and remove pump barrel union,
inspect/clean/replace fi lter
Worn pump
Have pump serviced by an
Onga service agent or other
suitably qualifi ed person
Pump is too small for
application
Have an Onga pump
professional recommend a
larger pump
