Samsung DMR78 Series Service Manual page 45

Error type Error mode
1. Check the operation of the Thermistor.
Heater error HE1
2. Check the Heater Relay.
Water leakage

LE
error
1. Check the connections for the Distributor Motor connectors.
2. Check whether the coil in Distributor Motor is conductive.
3. Check whether half load is operating normally.
Half load error PE
New PBA
3-1.Check whether half load is operating normally.
4. Check the Power Relay.
4-7
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Checking Method
Check whether there is any trace of water leakage in the shutter.
Normal: No water leakage trace
➢
: Remove the connectors before measuring.
Normal: Approx. 2.6 kΩ
➢
- Check the half load operation
Normal: 120V
➢
- Check the the operation of Distributor Motor Relay.
: Check the operating voltage between the white wire of the
Main PBA CN1 connector and the violet wire of the CN14
connector.
Normal: 120V (while operating)
➢
- Check the half load operation
Normal: 120V
➢
- Check the the operation of Distributor Motor Relay.
: Check the operating voltage between the white wire of the
Main PBA CN101 connector and the violet wire of the CN201
connector.
Normal: 120V (while operating)
➢
Corrective actions
- See the "tE1 Error".
- See the "HE Error".
- Faulty: Check the leakage location. Replace the faulty part.
- Nomral: Replace the Main PBA assy.
- Reconnect the Distributor Motor connectors.
- Faulty: Replace the Distributor Motor.
- Faulty: Replace the Main PBA assy.
- See the "Power Relay error".
4. Troubleshooting
New PBA