2-3 - R4.5 Dispense Wrong Volume (Filtered Water)

Modified on Tue, 3 Jun at 11:35 PM

According to the problem analysis result done by TSA, you can directly begin the subsequent troubleshooting process from the corresponding potential root cause.

1. External water line

2-3-1-1 - Verify all the shut-off valves on the external water line are fully turned on.

Result 1 - All the shut-off valves are fully turned on.
Start 2-3-2-1.
Result 2 - Any of the shut-off valves is off.
Start 2-3-1-2.

2-3-1-2 - Turn on the shut-off valve, and verify if the water flow rate can reach 30ml/sec

Result 1 - The water flow rate can reach 30ml/sec.
Issue close. (Root cause: External water line shut off)
Result 2 - The water flow rate cannot reach 30ml/sec.
Start 2-3-2-1.
Result 3 - The water is not dispensed at all.
Start 2-3-3-1.

2. Water Filter

2-3-2-1 - Verify the flow rate before and after the water filter are the same and reach 30ml/sec.

Result 1 - The water flow rate before and after the water filter are the same and reach 30ml/sec.
Start 2-3-3-1.
Result 2 - The water flow rate after the filter is lower than the flow rate before the filter.
Start 2-3-2-2.

2-3-2-2 - Replace the water filter, and verify the flow rate before and after the water filter are the same and reach 30ml/sec.

Result 1 - The water flow rate before and after the water filter are the same and reach 30ml/sec.
Issue close.(Root cause: Water filter clog)

3. Solenoid & Control Board

2-3-3-1 - Verify the solenoid wire connection (solenoid to extension wire, extension wire to control board).

Result 1 - The wire connections are fine
Start 2-3-3-3.
Result 2 - Any of the wire connections is inpropered.
Start 2-3-3-2.

2-3-3-2 - Reconnect the wire properly, and verify the water dispensing function.

Result 1 - The water flow rate can reach 30ml/sec.
Issue close. (Root cause: Solenoid wire disconnected.)
Result 2 - The water is not dispensed at all.
Start 2-3-3-3.

2-3-3-3 - Replace the solenoid, and verify the water dispensing function.

Result 1 - The water flow rate can reach 30ml/sec.
Issue close. (Root cause: Solenoid failure.)
Result 2 - The water is not dispensed at all.
Start 2-3-3-4.

2-3-3-4 - Replace the control board, and verify the water dispensing function.

Result 1 - The water flow rate can reach 30ml/sec.
Issue close. (Root cause: Control board failure.)
Result 2 - The water is not dispensed at all.
Escalate to FAE.