AquaBreak Series
Page
15
of
18
AquaTech-Pressmain Instruction Manual\AquaBreak
2.3.4
TROUBLE SHOOTING GUIDE
Symptoms
Possible Cause
Check
No water, pump will not start
Electrical supply off
Check power supply, electrical
isolator, fuses, RCD, motor circuit
breaker, wiring connections
Pump seized (motor buzzes)
Pump has not been run regularly
(weekly). Contact Aquatech
Pressmain service
Pump seized (internal motor
thermotrip operated)
Pump has not been run regularly
(weekly). Contact Aquatech
Pressmain service
Dry run protection initiated (see
2.3.3.3)
Breaktank is empty, check inlet
valve/strainer and solenoid valve
operation. Check mains water
supply. Check pump suction
strainer/inlet filter
Maximum system head exceeds 8m
for AB5‐35 or 12m for AB5‐45.
Pump start Pressure switch will not
operate if maximum system head is
exceeded.
Pump stopped on low water (dry
run), no water in break tank
Tank Level Control relay fault, switch
power off, wait 10 seconds and
switch power on again to reset
control relay.
No water, pump does run
Pump air‐locked
Vent/prime pump to remove all air.
Check pump suction strainer/inlet
filter
Reduced/intermittent flow
Pump partially air‐locked
Vent/prime pump to remove all air
Mains water/Pump inlet strainer
blocked/partially blocked
Clean mains water/pump inlet
strainer (section 2.4)
Air in system
Purge air from all system pipework
Dry run protection initiated (see
2.3.3.3)
Breaktank is empty, check inlet
valve/strainer and solenoid valve
operation. Check mains water supply
Pump continues to run with all
outlets closed or pump cycles on and
off (hunts)
Leak in system
Check all system pipework and
outlets for leak
Control vessel air‐charge incorrect
Check air charge pressure in vessel
Jammed flow switch
Remove discharge hose and check
flow switch for free movement, no
debris
Jammed non‐return valve
Remove non‐return valve and check
for free movement, no debris
Damaged flow or pressure switch
Contact Aquatech Pressmain service
If a problem persists, contact AQUATECH‐PRESSMAIN service department quoting the serial
number WN: _______ (on control panel fascia)
