u1 Undercounter Systems
Install & Operation Guide | 39
GB
Trouble Shooting
Fault Diagnosis Guide 2 – No Water Dispenses
(continued)
Problem/ Report
Possible Cause
Suggested Action
No Water Dispenses (continued)
From Ambient or Cold Valve
Button not being pressed enough Press button firmly.
Faulty controls PCB
Replace Control PCB – Check
for 24 VDC outputs if necessary.
From Cold Valve
Firstly as for Ambient and or
Cold Dispense
Carry out the checks and actions
as for Ambient Dispense
Low or no CO2.
Check and replace cylinder
as necessary
Pump not operating
Check carbonator level
Control System.
Check probes connected/leads
attached. Check power supply
to pump.
Carbonator Tank over
pressurised with CO2
Switch Sparkling System off,
shut off CO2 supply and release
CO2 from carbonator. Switch
Sparkling system on, then check
pump operation. If normal,
open CO2 supply after pump
has stopped.
Pump Feed Solenoid Valve
Check valve function:
•
If no input DC voltage,
check rectifier and level
control module.
•
If input but no function,
check valve coil. Replace
parts as needed.
Carbonation System
switched off.
Switch on (Switch on back of
the machine)
Summary of Contents for u1
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