Fisher & Paykel Intuitive DE62T27GW, Руководство по обслуживанию

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7.3.1 Testing the Conductivity Contacts
Impedance Testing
It is possible to check the integrity of the conductivity contacts through diagnostics. Firstly enter
the diagnostic mode described in Section 7.1.4, and then press the
Time Dry button five times. In
this mode, touching damp clothes or fingers across the conductivity contacts will cause the LED
display to change. If the contacts, or the harness to them, have gone open circuit, no change will
occur in the LED display. This is a useful method of checking the integrity of the sensor cells. To
exit the diagnostic mode, press the
Power button.
Resistance Test
An alternative, but slightly less reliable method of testing the conductivity contacts, is to test the
circuit with a multimeter. When using this method the power to the dryer must be switched off.
Place one probe of the multimeter on each conductivity contact. The resistance should be
6. 2%.
To exit the diagnostic mode, press the
Power button.
7.3.2 Data Download Mode
Encoded data is transmitted out of the Wrinkle Free LED, and can be captured by an optical
download pen attached to a PC or hand held palm PC, where “Smart Tool” software interprets the
data to aid servicing.
To enter the Data Download mode;
Enter diagnostic mode as described in Section 7.3, then press the
Start/Pause button. The
Wrinkle Free LED will flash. Place the data download pen over the LED to download the data.
To exit from the data download mode, press the
Power button.
8 AUTOSENSING
When wet or damp clothes are loaded into a dryer they are partially saturated with water, which is
a relatively good conductor of electricity. In the Intuitive™ dryer, sensor bars (located beneath the
lint bucket) are used to measure the conductivity. When moisture in the clothes touches across the
sensor bars their conduction is measured. As the clothes dry they become less conductive and it is
this measurement that is used to calculate the dryness of the clothes load. Large loads will brush
against these sensor bars more frequently than small loads, and this strike count is used to help
determine the dryness of different sized loads.
Different fabrics retain moisture differently; a thick towel containing a lot of moisture will often
conduct the same as a light synthetic garment containing very little. It is this difference in fabric
characteristics plus the initial unknown moisture content that makes the calculation of dryness
reasonably complex. To test the sensor bars refer to Section 7.3.1
9 TEMPERATURE CONTROL
Auto sensing is automatically selected when the Intuitive™ dryer is turned on. The user can select
a time dry option of 20, 40 or 80 minutes through the Options menu. Auto sensing of the clothes
load dryness level is achieved by touch sensors that sense the moisture content of the load. An
exhaust temperature sensor is used to monitor the exhaust temperature. The controller limits the
temperature to what is required for the various cycles and determines what elements are used.