Grain Systems PNEG-1458 - Manual (Page 53)

PNEG-1458 T-Series Tower Dryer 53
11. Safety Circuit Shut Down Messages
Figure 11A
Fan/Heater Generated Errors
The following is a list of errors that are generated with the fan/heater controller. Each fan/heater has there
own set of safeties which are listed below. You will need to inspect the controller associated with the error.
Example: If you get this error, it is telling you the problem is with housing 1 (bottom most fan) High-Limit.
(See Figure 11A.)
Air Switch x Stuck
The air switch contacts have closed prior to the fan starting, indicating a freewheeling blade or improper
setting of the air switch. The message will distinguish between which fan caused the shut down. This
indicates that 12 VDC has been lost to terminal J4-04 on the Fan/Heater board.
Fan x Loss of Airflow
This error message is displayed when airflow (air pressure) has been established but was lost for some
reason. This could happen if while during the dryers operation the grain has settled or shrinkage in the
grain columns causing a loss of air pressure in the plenum chamber.
Fan x No Airflow
Contacts in the air switch have never opened due to the fan not turning or the air switch may need
adjustment. The message will distinguish between which fan caused the shut down.
Flame Loss x
The flame sensor has failed to detect a burner flame which had been established but was lost for some
reason and there is a problem with the flame sensing circuitry or the dryer is not getting burner fuel.
The message will distinguish between which burner caused the shut down. The reference to the number
one is telling you that it is burner number one which is the bottom most fan.
Shut down warning window:
Touch the Help button
to display the shut down
help window.