Samsung DMR78AHS/XAC Service Manual

Also see for DMR57 Series: User manual Installation guide User manual User manual Installation guide

Contents

4. Troubleshooting4-3Error type Error mode Checking Method Corrective actionsWater supply error 4E1. Check whether the 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 supplyresumes.3. Check whether any foreign material is in the Water Supply Line andthe Inlet Valve filter. - Remove the foreign material. Clean the filter 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 theconnector before measuring.)Normal: Approx. 1.2 kΩ➢- Faulty: Replace the Inlet Valve.6. Check whether the Inlet Valve is operating normally.- Check the operation of the Inlet ValveNormal: 120V➢- Check the Inlet Valve Relay.: Check the voltage between the white wire of the Main PBACN1 connector and the brown wire of the CN14Normal: 120V (while operating)➢NEW PBA6-1.Check whether the Inlet Valve is operating normally.- Check the operation of the Inlet ValveNormal: 120V➢- Check the Inlet Valve Relay.: Check the voltage between the white wire of the Main PBACN101 connector and the brown wire of the CN201Normal: 120V (while operating)➢- Faulty: Replace the Main PBA assy.- Normal: Replace the Inlet ValveNEW PBA7. Check the Power Relay. - See the “Power Relay error”.8. Check whether the water supply stops after water is supplied for 5seconds. - Replace the Flow Meter.9. Check whether the water supply stops after water is supplied for 1or 5 minutes. - Check the water supply valve and increase the water pressure.