2928 VADA FLOW BOSS DIGITAL WATER SWITCHING UNIT VFB-DSU INSTALLATION MANUAL
TROUBLESHOOTING
Having trouble? Sort it out here, quick smart.
If these solutions do not solve the problem, please visit your local Reece branch.
SYMPTOM CAUSE SOLUTION
No water is delivered
from pump or
pump performance
is decreased.
Rainwater tank
is empty.
1. Check rainwater tank level.
2. If empty/low, wait for tank to fill.
No power at outlet. Check power supply, circuit breakers
and plug connected to pump.
Isolation valve is shut. Open isolation valve at water source.
Bad signal from
float switch.
Check installation and operation of
the float switch. Refer to page 11
for installation instructions.
Pump has overheated. Allow pump to cool down.
Pump is not primed. Refer to pump manual on how to prime pump.
In-line strainer on the
suction line is blocked.
Clean Y-strainer of any dirt and debris.
Mesh filter in the
water switching
unit is blocked.
1. Switch power off.
2. Isolate water.
3. Remove pump barrel union.
4. Inspect/clean/replace filter.
Pump is worn. Have pump serviced by a licensed service
agent or suitably qualified professional.
No water is delivered
from pump: Digital
Water Switching
Unit has gone into
“loss of prime”.
Valve on or between
tank and switching
unit inlet is closed.
1. Open gate valve and prime the pump. Refer
to pump manual on how to prime the pump.
2. Reset the switching unit by pressing
‘Reset’ key.
Mesh filter in the
water switching
unit is blocked.
1. Switch power off.
2. Isolate water.
3. Remove pump barrel union.
4. Inspect/clean/replace filter.
Pump is not primed. 1. Open gate valve and prime the pump. Refer
to pump manual on how to prime the pump.
2. Reset the switching unit by pressing
‘Reset’ key.
SYMPTOM CAUSE SOLUTION
Pump continually
runs or cycles on
and off consistently
over time when
no outlets open.
Leak in the
plumbing system.
1. Identify where the leak is
e.g. toilet or tap leaking.
2. Repair the leak.
Issue with pump. Refer to pump manual for troubleshooting.
Air lock in the system. 1. Bleed air from system.
a). Above ground tank: Remove
priming plug on pump casing. Allow
water to flow through via gravity
until all air has been expelled.
b). Below ground tank: Ensure foot
valve is installed, fill up suction line
and casing from priming port.
2. Activate appliances/outlets sequentially
from the nearest to the furthest outlet.
3. Repeat if necessary.
4. If problem persists, please contact Reece
store pump was purchased from.
No water
supply at all.
Mains water valve
is closed.
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. The recommended
pressure is 500kPa as per AS/NZS 3500.
Poor water pressure
through pump.
Mesh filter in the
water switching
unit is blocked.
1. Switch power off.
2. Isolate water.
3. Remove pump barrel union.
4. Inspect/clean/replace filter.
Pump is worn. Have pump serviced by a licensed service
agent or suitably qualified professional.
The pump has been
incorrectly sized for
the application.
Contact the Reece store where the
product was purchased from.
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