Fisher & Paykel DE7027J1US Service Manual page 52

1.1.2 Control Operation
The control board runs in 3 ways, Automatic cycles, Timed Cycles and Steam Cycles.
Automatic cycles
When running an automatic cycle, the control board initializes the default cycle time and will execute the
temperature control during all the cycle.
During the first 5 minutes elapsed, the control board runs the Restriction size algorithm and the Load size
algorithm, then a set of parameters are selected to calculate a new remaining time.
During the drying process, control board reads the sensor rod signal and calculates the filter voltage signal
Once the target voltage is reached the control calculates the new remaining time
The dryer runs without heat during the last minutes of the cycle (it depends of the cycle and heat level).
Sensor rods
There should only be a minimum of 1Mohm across the bars when dry. The resistance should lower when
moisture tracks across the bars. To test the bars, check their resistance dry, then wet your finger and place it
across the bars and check for a change in resistance.
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