Bosch, Neff, Siemens Showing 1 min left syndrome

On many different BSH branded models of both dishwasher and washing machine the programme appears to complete all but the last 1 minute shown on the time counter. And, without exception, relates directly to a ‘time-out’ error (of some sort) that the programme module has detected at some point during the cycle. The programmes microprocessor circuitry somewhat basic in not specifying an error code but instead just displays the number 1 (-1) or (01) in the window.

In the case of a dishwasher it could mean one or more of the following problems have occurred: –

Fill time-out
Drain time-out
Blockage in water fill system
Not heating
Anti-flood switch tripped
Turbidity sensor (if fitted) fault

For washing machines and some washer dryers then almost always it refers to an earth leakage problem associated directly to the motor. So an insulation tester is vital in identifying any failing there. Likewise the heater needs checking.

In some (isolated) cases a motor fault can damage the fuzzy logic circuit within the control module (PCB) though. And only after you have successfully repaired the motor fault does that issue become apparent and replacing the PCB the only cure.

Open circuit heater – Usually completes cycle OK but your customer will very often tell you it took far longer than normal to finish.