Air Flow Switch Errors
The control will flag an Airflow Switch Error under several con-
ditions. Airflow Switch Errors will be processed differently de-
pending upon what state the machine was in when the error was
detected.
Airflow Switch Sensed Closed While Not In Run
Mode
If an airflow switch is sensed closed 30 seconds after entering
Idle Mode, or End of Cycle Mode, the control will display an er-
ror message until power is cycled or the error clears. The cycle
will not start and all user inputs will be ignored. If the error does
clear
, the control will go back to its previous mode of operation.
When this error occurs the Airflow Switch 1 error counter will be
incremented and the error will also be saved to the Last Eight
Alarms Menu.
Airflow Switch Does Not Close After Cycle Started
If the airflow switch does not close within 5 seconds of the
start/re-start of a cycle, the control will go to the Cool Down por-
tion of the cycle, display an error message and sound the audio
alarm. Once the Cool Down portion of the cycle ends, the control
will continue to display the error message until the power is cy-
cled to the machine or the keypad is pressed. When this er-
ror occurs, the Airflow Switch 2 error counter will be incremen-
ted and the error will also be saved to the Last Eight Alarms
Menu.
Airflow Switch Bounces During A Running Cycle
If the airflow switch is open for at least one second, the heat will
be turned off and will remain off until the switch is observed
closed for at least 5 seconds (it is flagged as an airflow switch
bounce). If there are 5 airflow switch bounces within 5 minutes
the control will go to the Cool Down portion of the cycle, display
an error message and sound the audio signal. When the Cool
Down portion of the cycle ends, the control will continue display-
ing the error message until power is cycled or a user presses the
keypad. When this error occurs, the Airflow Switch
Bounce Error will be incremented and the error will also be saved
to the Last Eight Alarms Menu. The Airflow Switch Bounce
counter will be incremented for every instance of an airflow
switch bounce.
Rotation Sensor Error
If the machine is equipped with a rotation sensor, the control will
constantly monitor the input and calculate the cylinder’
s rpm. If
the rpm drops to zero while the cylinder is supposed to be spin-
ning, the control will go to the Cool Down portion of the cycle.
The control will display an error message and sound the audio
signal. Once the Cool Down portion ends, the control will contin-
ue to display the error message until power is cycled to the ma-
chine or the correct keypad is pressed. This error will increment
the Rotation Sensor Error counter and will be saved in the Last
Eight Alarms Menu.
Moisture Sensor Error
While in Idle Mode and on the Cycle Menu, the control will be-
gin to monitor the moisture sensor input after one minute without
user input. If the moisture sensor circuitry detects a load present
signal read consistently (every second) for a ten minute period
without user input, the control will declare, if programmed to do
so, a load sensed. If at any time during this sensing period, user
input is detected or the control determines that there is no load
present, it resets the load detected counter. After this ten minute
period with a consistent load sensed, the control queues the Load
Sensed Menu to display
. When user interaction is sensed, the dis-
play will wake and show the Load Sensed Menu prompting the
user to answer whether the machine is currently empty. If the op-
erator selects No, the control returns to the Cycle Menu. If the
operator selects Yes, the control will increment the Moisture Sen-
sor Error counter and record the error in the queue of the last
eight machine errors and display the Service Moisture Sensor
Menu, instructing the operator to service the moisture sensor
soon and press the
keypad to return to the Cycle Menu. The
Load Sensed prompt will only appear once a day, unless machine
power is cycled. If the control is idle, with the Load Sensed Menu
queued, and a Service Schedule Reminder is then queued as well,
when detecting user interaction, the control will first display the
appropriate Service Schedule Menu and then display the Load
Sensed Menu after a key has been pressed.
Fan Motor Contactor Error
If the control attempts to turn on the heater relay and the control
does not sense that the Fan Motor Contactor is closed, the control
will go to the Cool Down portion of the cycle, display an error
message and turn on the audio signal. Once the Cool Down por-
tion of the cycle ends, the control will continue displaying the er-
ror message until power is cycled or the keypad is pressed.
This error will increment the Fan Motor Contactor Error counter
and will be saved in the Last Eight Alarms Menu.
Fan Motor Centrifugal Switch Error
If the control attempts to turn on the fan motor and the fan motor
contactor is sensed closed but the Fan Motor Centrifugal Switch
fails to close, the control will go into the Cool Down portion of
the cycle, display an error message and turn on the audio signal.
Once the Cool Down portion of the cycle ends, the control will
continue displaying the error message until power is cycled or the
keypad is pressed. This error will increment the Fan Motor
Centrifugal Switch error counter and will be saved in the Last
Eight Alarms Menu.
Machine Errors
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