Error code reference

LG Dishwasher Error Code 4C5

No water supply mode (S/W ver. 7134+)

No water supply mode (S/W ver. 7134+): repeats water valve on (60 sec) off (3 sec) 3 times.

First step from the service manual

Check the water valve for water supply.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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4C5 on my LG LDP6797ST

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No water supply mode (S/W ver

From Service Manual 966799, p.51:

1.Check the water valve for water supply.

2.Measure the inlet valve coil resistance at the valve connector. Expected: 1,000 to 1,200 ohms per coil at room temperature.

3.Verify static water supply pressure at the inlet hose. Below 20 psi or fluctuating supply commonly triggers fill-timeout faults.

Part 5220FR2006H

Water inlet valve

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