52 _ Troubleshooting
Error Type
Error mode
Checking method
Corrective actions
Circulation
Pump error
3E
(3E1 -3E4)
1. Check whether there is any foreign material in the
Circulation Hose and Circulation Pump.
- Remove the foreign material in the Circulation Hose and Circulation Pump.
2. Check the connections for the Circulation Pump connector.
- Reconnect the Circulation Pump connector.
3. Check whether the Circulation Pump coil is conductive.
(Remove the connector before measuring.)
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- Faulty: Replace the Circulation Pump.
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)
- Faulty: Replace the Main PBA assy
4-2. Check the operating LED(red) of the inverter PBA
Normal : Fully turn-on (while operating)
- Faulty: Replace the Inverter PBA assy.
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
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- Faulty: Replace the Inverter PBA assy.
- Normal: Check a connection between the Inverter PBA and the Circulation
Pump.
