Diagnostic Mode; Entering The Diagnostic Mode; Last Fault; Conductivity Contact Impedance - Fisher & Paykel DEGX1 Service Manual

5.3

Diagnostic Mode

5.3.1

Entering the Diagnostic Mode

(a) Turn the power supply to the dryer on.
(b) Press and hold the Auto Dry down button, then press the Power button.
The dryer is now in level 0 of the diagnostic mode. After initial entry into the diagnostic mode, the
Start/Pause button operates the dryer as normal. Press the Auto Dry up or down buttons to scroll
through the fault levels.
There are several levels of diagnostics, most of which are used in development and production. These
levels may bring on various LEDs, but the level of use for the service technician is that of the last fault.
5.3.1.1

Last Fault

To enter the last fault diagnostics, enter the diagnostic mode as described above, then press the Auto
Dry up button three times. The last fault will be displayed on the drying progress LEDs as described in
Section 5.1.
5.3.1.2

Conductivity Contact Impedance

To enter the conductivity contact impedance check, enter the diagnostic mode as described above,
then press the Auto Dry up 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 circuits.
To exit the diagnostic mode, press any cycle button.
5.3.2

Entering the Data Download Mode

(a) Turn the power supply to the dryer on.
(b) Press and hold the Auto Dry down button, then press the Power button. This enters the
diagnostic mode.
(c) Press the Regular button.
Encoded data is transmitted serially out the red Auto LED, and is captured by an optical download pen
attached to a PC where "Smart Tool" software interprets the data to aid servicing.
To exit, press the Regular button.
5.3.3

Entering the Showroom Mode

(a) Turn the power supply to the dryer on.
(b) Press and hold the Air Dry button, then press the Power button.
The LEDs will flash in a random sequence.
To exit, turn off the power supply to the dryer at the wall.
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