4. Troubleshooting
4-7
Error Type
Error
mode
Checking Method
Corrective actions
Water supply Error
4E
[Or]
‘Smart
Auto’
LED
1. Check whether the water faucet is open.
- Open the faucet.
2. Check whether the water supply has been cut off.
- Close the faucet and turn off the power. Wait until the water supply
resumes.
3. Check whether any foreign material is in the Water Supply Line and the
water Inlet Valve
fi
lter.
- Remove the foreign material. Clean the
fi
lter with a brush.
4. Check the connection for the Inlet Valve connector.
- Reconnect the Inlet Valve connector.
5. Check whether the coil in Inlet Valve is conductive (Remove the connector
before measuring.)
Normal: Approx. 1.2 k
Ω
¯
- Faulty: Replace the Inlet Valve.
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 yellow wire of the Main PBA CN101
connector and the brown wire of the CN202
Normal: 120V (while operating)
¯
- Faulty: Replace the Main PBA assy.
- Normal: Replace the Inlet Valve
- Remove
Retainer.
- Check
voltage
7. Check whether the water supply stops after water is supplied for 5 seconds.
- Replace the Assy Case Brake which is including Flow Meter.
8. Check whether the water supply stops after water is supplied for 1~5
minutes.
- Check the water supply valve and increase the water pressure.
9. Check whether the water supply stops after water is supplied fully until the
fl
oater in Assy Case sensor is located in High level sensor.
- Replace the Assy Case Sensor which is including water (high &
low) level sensor.
Содержание DMT400 series
Страница 10: ...2 5 2 Features and Specifications Memo ...
Страница 33: ...3 23 3 Disassembly and Reassembly Memo ...