Samsung DMR78AHS/XAC Service Manual page 45

Error type Error mode
Heater error HE1
Water leakage
LE
error
Half load error PE
4-7
Checking Method
1. Check the operation of the Thermistor.
2. Check the Heater Relay.
Check whether there is any trace of water leakage in the shutter.

Normal: No water leakage trace
➢
1. Check the connections for the Distributor Motor connectors.
2. Check whether the coil in Distributor Motor is conductive.
: Remove the connectors before measuring.
Normal: Approx. 2.6 kΩ
➢
3. Check whether half load is operating normally.
- 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)
➢
New PBA
3-1.Check whether half load is operating normally.
- 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)
➢
4. Check the Power Relay.
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