Grain Systems PNEG-1743 - Manual (Page 44)

8. Safety Circuit Shutdown Messages
44 PNEG-1743 Vision for Tower Dryers
0203 - Burner #X Vapor Temp High-Limit
This message indicates that the LP gas vapor temperature sensor located in the gas pipe train
downstream from the vaporizer has opened, indicating that the vaporizer is running too hot and must be
readjusted. This sensor is set at 200°F (93°C) and automatically resets itself when cooled. The message
will identify which burner caused the shutdown. Try adjusting the vaporizer coils farther away from the
burner’s flame. You may also want to try switching the burner mode from High/Low to ON/OFF, especially
on warmer days.
0204 - Burner #X Plenum Overheat
This message indicates that an over-temperature condition occurred inside the dryer plenum. This control
is a 300°F (149°C) limit and automatically resets itself when cooled. The message will identify which
plenum caused the shutdown.
0205 - Burner #X Grain Overheat
A grain high-limit sensor runs through the center of the columns of each module. The safety is tied to the
lowest fan/heater on that module. If the sensor reaches 210°F, it will open, shutting down the dryer. There
could possibly be a plugged column.
0206 - Burner #X Gas Pressure High-Limit
A gas over-pressure switch is placed on the high side of the gas regulator. If the gas pressure exceeds a
certain value, the dryer will shutdown. This is not standard on all dryers.
0207 - Burner #X Lost Airflow
This error message is displayed when airflow (air pressure) has been established but was subsequently
lost. This could happen if, during the dryer’s operation, the grain settled or if grain shrinkage occurred in
the grain columns, thereby causing a loss of air pressure in the plenum chamber.
0208 - Burner #X No Airflow
Contacts in the air switch failed to open due to the fan not turning or the air switch may need adjustment.
The message will identify which fan caused the shutdown.
0209 - Burner #X Ignition Failure
This condition occurs during the initial ignition of the burner. If the burner fails to light, check to make sure
that the gas has been turned ON and/or the Maxon valve has been turned ON.
020A - Burner #X Lost Flame Detection
The flame sensor failed to detect a burner flame which had been established but was lost subsequently
and there is a problem with the flame sensing circuitry or the dryer is not getting burner fuel. The message
will identify which burner caused the shutdown.
020B - Burner #X Plenum Overheat (Thermistor)
This message indicates that an over-temperature condition occurred inside the dryer plenum. This control
is a 300°F (149°C) limit and automatically resets itself when cooled. The message will identify which
plenum caused the shutdown.