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Samsung DW80H9940US/AA Service Manual page 54

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Error Type
Error mode
Circulation
3E
Pump error
(3E1 -3E4)
52 _ Troubleshooting
Checking method
1. Check whether there is any foreign material in the
Circulation Hose and Circulation Pump.
2. Check the connections for the Circulation Pump connector.
3. Check whether the Circulation Pump coil is conductive.
(Remove the connector before measuring.)
4. Check the operation of the Inverter PBA
4-1. Check the operating AC voltage of the Inverter PBA CN5
connector
Normal : 110V ~ 120V (while operating)
4-2. Check the operating LED(red) of the inverter PBA
Normal : Fully turn-on (while operating)
4-3. Check the operating voltage between #1 and #2 of the
Inverter PBA CN6 connector at L3(Lc) in test mode
Normal : 50V ~ 90V (while operating)
How to do L3(Lc) in test mode
- Push Booster left key+Booster right key+Power key at the
same time
- Push the Linear Auto key
Corrective actions
- Remove the foreign material in the Circulation Hose and Circulation Pump.
- Reconnect the Circulation Pump connector.
- Faulty: Replace the Circulation Pump.
- Faulty: Replace the Main PBA assy
- Faulty: Replace the Inverter PBA assy.
- Faulty: Replace the Inverter PBA assy.
- Normal: Check a connection between the Inverter PBA and the Circulation
Pump.

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