WaterLogic PUREZZA WL2FL FIREWALL Manual page 49

2. FAULT CODE: Green Flashing Light and 15 second Audible Alarms –Indicates the
Firewall UV system is not detecting adequate dose of UV to ensure safe water.
*The Cold Solenoid will shut down and no cold water will dispense. Hot water will
still dispense.
Possible Reason
Firewall UV System does not
have adequate dose of UV.
Power to Ballast
N = Black Wire
L = White Wire (Live)
WL2FL Manual
Flashing Green Light
Check UV System
1. If Ballast Indication Light is Green – the system should
be operational. Ensure UV lamp is on. Replace Lamp.
If lamp is replaced and problem persists, replace UV
Sensor.
2. If Ballast Indication Light is Red, change UV Lamp.
3. If Ballast Indication Light is not lit – check power to
Ballast. If power is going to Ballast – replace Ballast.
Remove Cover to locate Ballast
Solution
Wiring Harness to UV Lamp
Ballast Indication Light
1 = White Wire
2 = White Wire
3 = Yellow Wire
4 = Yellow Wire
Page 51 – Revision AUS-04-23