Vapor x high limit, Grain temp open x, Grain temp short x – Grain Systems PNEG-1181 User Manual
Page 25: Plenum temp open x
8. Troubleshooting Tips
PNEG-1181 Portable Dryer Troubleshooting
25
Possible Safety Circuit Shut Down Messages (Continued)
VAPOR X HIGH LIMIT
Vapor 1 High Limit:
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 adjusted. This sensor
is set at 200°F and will automatically reset itself when cool. Adjust the vaporizer coil away from the burner
flame. Make sure the LP tank has fuel in it. Also, try switching to ON/OFF cycle rather than High/Low,
especially on warmer days. If the error still does not clear after pushing the stop button, check the fan/heater
interface. The error message shows on which heater this condition occurred.
Use a voltmeter on the following terminals:
Black probe (J7-10) DC negative
Red probe (J7-16) 12 VDC output
Red probe (J7-01) 12 VDC when closed
GRAIN TEMP OPEN X
Grain Temp Open 1:
This error indicates there is a open condition with one of the grain temperature
sensors located inside the left or right grain columns. This could be a open sensor or the sensor wires
could be disconnected. These sensors are wired to a fan/heater interface, which one depends on the
model of dryer. Refer to the
Dryer Front Panel Parts Location Wiring
for location of the actual sensors.
The terminals they are wired to are as follows:
Grain Temp Sensor Ground - (J7-18)
Grain Temp Sensor - (J7-14)
When testing these sensors to see if they are bad refer
(Series 2000 Temp Sensors)
and also
Grain Sensor Testing on Page 57
.
GRAIN TEMP SHORT X
Grain Temp Short 1:
This error indicates a shorted condition with one of the grain temperature
sensors located inside the left or right grain columns. This could be a shorted sensor or the sensor wires
could be shorted together. The sensors are wired to a fan/heater interface. Refer to the
more complete information.
The terminals they are wired to are as follows:
Grain Temp Sensor Ground - (J7-18)
Grain Temp Sensor - (J7-14)
When testing these sensors to see if they are bad, refer to the
(Series 2000 Temp
Sensors)
and also
Grain Sensor Testing on Page 57
.
PLENUM TEMP OPEN X
Plenum Temp Open 1:
This error indicates an open condition with the plenum temperature sensor
located inside the plenum chamber. This could be an open sensor or the sensor wires could be
disconnected. These sensors are wired to a fan/heater interface, which one depends on number of
plenums. The error message will show in which plenum the opening occurred. Refer to the
for location of the actual sensors. The terminals they are wired to are as
follows:
Plenum Temp Sensor Ground - (J7-13)
Plenum Temp Sensor - (J7-12)