Samsung DMT300 Series Service Manual page 34

4. Troubleshooting
Error Type Error mode
4-5
Checking Method
5) Check whether the coil in Inlet Valve is conductive (Remove the
connector before measuring.)
• Normal: Approx. 1.2 kΩ
6) Check whether the Inlet Valve is operating normally.
• Check the operation of the Inlet Valve
• Normal: 120V
• Check the Inlet Valve Relay.
: Check the voltage between the white wire of the Main PBA CN101
connector and the brown wire of the CN201
• Normal: 120V (while operating)
7) Check the Power Relay.
8) Check whether the water supply stops after water is supplied for 5
seconds.
9) Check whether the water supply stops after water is supplied for 1 or
5 minutes.
Corrective actions
Faulty: Replace the Inlet Valve.
•
• Faulty: Replace the Main PBA assy.
Normal: Replace the Inlet Valve
•
• Remove Retainer.
Check voltage.
•
• See the "Power Relay error".
• Replace the Flow Meter.
Check the water supply valve and increase the water pressure.
•
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