Troubleshooting - DAYLIFF SUNFLO-S 150 Installation & Operating Manual

5. TROUBLE SHOOTING
PROBLEM
Pump operates with
no flow or reduced
flow
Pump will not
operate
For SunFlo-B pump
shutdown with red
LED ON for ERR_1
For SunFlo-B pump
shutdown with red
LED ON for
LOW_POWER
POSSIBLE CAUSE
Low voltage
No water at pump level
Pump located too deep
Clogged filter screen
Water flow restricted
Loose connections or punctured hose
Incorrect power supply
Incorrect wire connections
Insufficient sunshine
Motor or pump is blocked and very hard
to turn
Low irradiation
Incorrect wire connections
Low voltage on the system which is
insufficient to power the pump
SOLUTION
Check solar irradiation
Ensure the pump is installed below
the lowest water level
Correct installation to the recommended
level
Remove filter screen and rinse
Check for crimped hose or blocked pipes
Check hose clamps or replace hose
Check power supply
Check electrical wiring
Check for corrosion and looseness and
correct
Check for tripped MCB & reset
Wait for sufficient sunshine conditions
Clean all solids or sand out of the pump
and reset by switching the pump OFF
then ON again
Check the PV array is facing the sun and
remove any shading. Otherwise wait for
optimum sunshine conditions
Check and correct wiring
Check controller wiring is well done
Inspect the controller for any burnt parts
and repair/replace
Check earthing connections are well
done
Insufficient power reaching the controller.
A solar-direct (non-battery) system should
start once there is sufficient sunshine
A battery system should start if the battery
supply voltage is higher than what the
pump requires
If the pump was recently connected (or
reconnected) to the controller, it may be
running in reverse direction due to wiring
error
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