WaterLogic WL3FW FIREWALL Manual page 57

No Water is Dispensing from One Side – Cold or Hot
Possible Reason
Too much water pressure.
Recommend 2.5Bar to 4Bar for
the WL3FW Water Treatment
System to operate properly.
PCB
Solenoid
See "Green Flashing Light"
Fault Code Section of this
Manual
Cold Water Dispenses from Faucet and Vent Outlet Simultaneously
Possible Reason
Improper tubing attachment
from the Cold Tank to Faucet
or vice versa
Scale has formed inside Cold
Tank outlet tube.
Expansion chamber in Cold
Tank is not sealed properly.
WL3 FW Manual
Verify water pressure at the Inlet Bulkhead with a Pressure
Regulator.
Additional method of verification is to turn off water to unit and
press the Dispense Button. Does the Solenoid open without water
pressure to the unit? Listen for solenoid to activate, not the
Dispense Button "click".
Adjust water pressure to 2.7 Bar – 3.5 Bar
Switch the hot and cold wires on PCB (red and blue connections).
If water now dispenses from the opposite side, this is an indication
that there is a PCB problem.
Replace PCB
If both the Water Pressure and PCB have been ruled out, then it is
the Solenoid.
Replace Solenoid.
Indicates the Firewall UV system is not detecting adequate dose of
UV to ensure safe water.
Verify tubing is connected properly from Cold Tank Outlets to
correct Faucet attachments.
Remove Cold Water Outlet Tube from Cold Tank to Faucet. Pour
some scale remover into Cold Tank.
Replace Cold Tank.
Solution
Solution
Page 53 - Revision: EU 17-09-2020