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Fault codes DW 20.1, 2, 3, 4 & 5
(fault codes the service technician may see in the service menu)
LED L3/Fault code F3, Thermistor fault (no indication in DW20.1)
Interruption in the heating or temperature more than 80 degrees C. The
program exits from the heating stage and continues in the process.
Indication only in the service menu.
Check: Thernistor, control unit.
LED L4/Fault code F4, Water intake fault (no indication in DW20.1)
Less than 80 pulses received by flow sensor within 60 seconds, or the
correct number of pulses is not achieved within 225 seconds. Program
interrupted.
Check: Water supply, flow sensor, inlet valve, wiring
60
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