5
DIAGNOSTICS
Overview
If a fault occurs that prevents correct operation of the dryer, and is detected
by the controllers, the dryer is stopped, the display shows a fault code and the
beeper is continuously turned on and off. Pressing the
Power
button will stop
the beeper but leave the fault code displayed to help the service technician
diagnose the problem. Pressing the
Power
button again will remove the fault
display and cause the dryer to try to start again.
If a fault occurs on a dryer, the user should be encouraged to turn the sound
off (by pressing the
Power
button once) but leave the displayed fault code on
for easy diagnostics.
Note
: If the dryer has faulted and displayed a fault but the fault is currently not
displayed, most faults will manifest when the user attempts to run the dryer
again. However, at any time the “Last Fault” can be recalled from memory.
Diagnostic Mode
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.
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 on page 7.