B4.2 Install & Operation Manual
Borg & Overström
AU
20
Problem/Report
Possible Cause
Suggested Action
Slow but Continuous Water
Dispense from Ambient or Cold Tap
Low incoming water pressure
Consider replumbing to alternative
supply if possible
Fit Booster pump set.
Intermittent Water Dispense from
Ambient or Cold Water Valve
Trapped air in pipework (especially
where water pressure is low after
filter change).
Hold button on to purge air out
(This could take sveral minutes
where pressure is low).
Pre-flush filters
Button not being pressed enough
Press button firmly. Could be
caused by surrounding cold
environment making the button
stiffer.
Faulty PCB
Replace PCB
Intermittent Water Dispense from
Ambient or Cold Water Valve and
hammering noise.
Fluctuating mains water pressure
situation.
Please contact technical support.
Continuous Water Dispense from
Ambient/Cold or Hot water valve.
Button jammed on/faulty.
Replace PCB or/button panel as
needed.
Debris blocking hole in diaphragm
window.
Dismantle valve and clean out.
Fault Diagnosis: Miscellaneous