Troublesho oti ng l 6-11
6
Troubleshooting
Problem
Process Temperature
Deviation – The process tem-
perature exceeds the deviation
band as entered for the speci-
fied time. Default values are
10°F {6°C} for 5 seconds.
Possible cause
One of the solid state relays (SSRs)
failed.
Defective heater.
The output on the board has failed.
The process RTD is loose or has fallen
out.
The air hose connections are loose.
Solution
Replace the failed solid state relays
(SSRs).
Check the heater fuses and resistance
across each leg of the process.
Replace the board.
Check the process RTD and tighten if
needed.
Tighten all air hose connections.
Shutdown Alarms
If the red Acknowledge Alarm LED is blinking red, the alarm is a shutdown
alarm. The dryer will shutdown automatically to prevent damage to the
equipment or personnel. Note that when the Acknowledge Alarm button is
pressed once, the blinking red LED becomes solid.
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