ADC Gas Electric Steam WDA-540 - Manual (Page 61)

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NOTE: If the failure was elsewhere (i.e. dryer’s door switch circuit) the light emitting diode (L.E.D.)
display would read “door” if a keyboard (touch pad) entry was attempted. If the display
L.E.D. indicators are on, and the door L.E.D. indicators are on, and the door L.E.D. input and
motor/heat output L.E.D.s are on, yet the motor and/or heat is not active (on); then the
problem is not the door switch on the Phase 5 microprocessor controller (computer), the
problem is elsewhere in the dryer.
2. “HEAT” - Output L.E.D. Indicator - if the dryer is started and there is no heat, yet the microprocessor
controller (computer) L.E.D. display heat indicator dot is on, but the heat output L.E.D. indicator
is off, then the fault is in the Phase 5 microprocessor controller (computer) itself. If both the
display heat output L.E.D. indicator are on, then the problem is elsewhere (external of
the microprocessor controller (computer).
3. “MTR” (motor) - Output L.E.D. Indicator - if the dryer is started and the motor is not operating, yet both
the microprocessor controller (computer) L.E.D. display motor indicator dot and “DOOR”
input L.E.D. indicator are on, but the “MTR” output L.E.D. indicator is off; then the
fault is in the Phase 5 microprocessor controller (computer) itself. If the motor is not
operating and the “MTR” output indicator is on, then the problem is elsewhere (external
of the microprocessor controller [computer]).