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F5 (Inadequate Water Supply)
Water Tap
•
Make sure the water input tap is totally open and that there is no water cut off.
Water Inlet Hose
•
Close the water input tap, separate the water input hose from the tap and clean the filter at the connection
end of the hose.
Water Inlet Valve
•
The water inlet valve filter could be clogged.
•
The water inlet valve could be out of order. There could be a problem with the cable connection of water
inlet valve.
Floater
•
The floater switch could be out of order or have a problem with the cable connection.
Pressure Switch
•
The pressure switch of the heater could have a mechanical or cable connection problem.
Circulation Pump
•
The circulation pump could be out of order or have a problem with the cable connection.
•
An external part could be blocked to the circulation pump.
F6 (NTC Faulty)
NTC
•
The NTC could be out of order.
•
The NTC cable connection could be faulty. The NTC could have a short or an open circuit.
Main PCB
•
Check the power and resistance value of heater.
•
Check the cable connection of the heater.
F7 (Extreme Heating Up Faulty)
NTC
•
If the water temperature inside machine is higher than 77°C, the NTC could be out of order.
Main PCB
•
The main PCB could be out of order.
F8 (Inadequate Heat)
Heater
•
Check the power and resistance values.
•
Check the cable connection of the heater.
Main PCB
•
Check the Main PCB.
Table of Contents
Page 18 DWSI1021
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