Troubleshooting The Soda Water Circuit - Lavit LB115 Series Troubleshooting Manual

Troubleshooting the Soda Water Circuit

Problem:
When a user selects sparkling water, the unit dispenses just CO2 gas. This may happen
periodically or it may happen continuously.
Issue:
The soda tank is not refilling properly when the water level in the tank is low. Root
Cause:
Air block in the soda water inlet line or a faulty soda level probe circuit.
Troubleshooting Procedure:
1. Remove the top cover panel but keep the touchscreen
and Lavit button connectors attached.
2. On the main PCB located on the front right of the unit under the
plastic shield, locate the soda probe lead connector. The connector
will be the yellow connector found on the front right-hand side of the
unit closest to you. It will have a yellow and black wire attached.
3. Locate the soda pump connector. The connector will be a red
connector along the top of the PCB located in the middle
(5 th from right or left). It will have a red and black wire
attached.
4. Inboard to the soda pump connector on the PCB a RED LED
illuminates when power is applied to the Soda Pump. Dispense two
medium soda waters. Watch to see if the RED LED illuminates. If the
RED LED does not illuminate proceed to STEP12.
5. If the RED LED comes on verify that water is being pumped to the
soda tank. This can be verified by the cycling on and off of the inlet
and cold tank solenoids which will also have RED LEDs cycling on
and off as well.
6. If the soda pump RED LED is illuminated and not cycling on
and off of the solenoids then an air block is present.
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