Manual

27
2003 Top Dry Service School
Error Messages
When the dryer shuts down the user can
quickly determine what caused the shutdown by
viewing the display on the dryer control panel. The
Electronic Monitoring Control System displays the error
message and sounds a warning signal to alert the user.
The displayed error conditions and their electrical cause
are as follows:
Burner 1 Loss Flame
The flame sensor in burner number one has
failed to detect flame. Either the burner failed to light
or the flame sensor needs to be adjusted. The flame
sensor is the sensor attached to the burner, and has a
single lead. If the burner is lighting but the unit is still
shutting down due to loss of flame the flame sensor
needs to be adjusted. The flame sensor can be adjusted
by bending it so it is immersed in flame. If the burner is
not lighting make sure that the dryer is getting fuel, all
solenoids are opening, and the ignitor is sparking.
Burner 2 Loss Flame
The flame sensor in burner number two has
failed to detect flame. Either the burner failed to light
or the flame sensor needs to be adjusted. The flame
sensor is the sensor attached to the burner, and has a
single lead. If the burner is lighting but the unit is still
shutting down due to loss of flame the flame sensor
needs to be adjusted. The flame sensor can be adjusted
by bending it so it is immersed in flame. If the burner is
not lighting make sure that the dryer is getting fuel, all
solenoids are opening, and the ignitor is sparking.
Fan 1 Vapor High Limit
The LP gas vapor temperature sensor located
on the gas pipe train downstream from the vaporizer
coil on fan and heater number one has opened indicat-
ing that the vaporizer coil is running too hot and must be
adjusted. This sensor is set at 200 degrees Fahrenheit
and automatically resets itself when cool. The vapor-
izer is adjusted by loosening the bolt and moving the
vaporizer coil away from the flame.
Fan 2 Vapor High Limit
The LP gas vapor temperature sensor located
on the gas pipe train downstream from the vaporizer
coil on fan and heater number two has opened indicat-
ing that the vaporizer coil is running too hot and must be
adjusted. This sensor is set at 200 degrees Fahrenheit
and automatically resets itself when cool. The vapor-
izer is adjusted by loosening the bolt and moving the
vaporizer coil away from the flame.
Fan 1 Housing High Limit
The temperature high limit located on the
housing on fan and heater number one opened, indicat-
ing that the housing towards the bin has overheated.
This high limit sensor is set at 200 degrees Fahrenheit
and must be manually reset.
Fan 2 Housing High Limit
The temperature high limit located on the
housing on fan and heater number two opened, indicat-
ing that the housing towards the bin has overheated.
This high limit sensor is set at 200 degrees Fahrenheit
and must be manually reset.
Plenum High Limit
An over temperature condition has occurred
inside the dryer plenum. The plenum high limit is set
automatically on the Hi-lo thermostat when the cycle
set-point is adjusted and resets automatically when
cooled. The lo-fire gas pressure needs to be lowered,
or the cycle setpoint on the Hi-lo thermostat needs to be
increased if the error is displayed frequently.