GSI Outdoors 100 SERIES DRYER PNEG-552 - Manual (Page 57)

PNEG-552 100 Series Dryer 57
10. Troubleshooting
A multimeter is required for some of the following checkout procedures. Before performing any tests,
determine if the dryer power supply is 1 phase, 230 volt, or 3 phase, 230 or 460 volt.
• The burner circuit is 120 volts AC on all standard U. S. production models.
• The control circuit to the motor starters is 120 volts AC.
• The safety circuit is 12 volts DC.
• When checking these circuits, measure voltage between the circuit test location and to ground.
• DC circuits should be measured between the test location and its respective DC ground. Refer to
Wiring Diagrams and the parts list for identification of parts and the electrical terminals.
Problem Possible Cause
Control power light OFF. 1. Check that main power and circuit breakers are turned ON.
Check for tripped breaker.
2. Check for blown 5 amp fuses.
3. Monitor relay is defective.
4. Defective transformer or wiring.
5. Check for a defective power switch.
6. Check wiring between fuses and input/output board. Refer to
Wiring Diagrams for test locations.
Control power is ON. Drying mode light OFF. 1. Power interruption: Incoming power to the dryer has been
interrupted. The display screen will show the date and time if this
has occurred, once power has returned.
This indicates control power is present at
input/output board, but no power is being
transferred through the I/O board. 2. Display not finished initial setup: The monitor will display a
copyright message and model number, total running time in
hours and minutes and then the current date and time. To
activate the controller press the reset button.
3. Input/output board: The input/output board has developed a
problem that requires its replacement.
No display on LCD screen. 1. Check for a defective power switch.
2. Check wiring between fuses and input/output board.
3. Check for 120 volts AC between points J6-02 and AC-1.
4. The display may have a malfunction requiring its replacement.
Control power light is ON, drying mode light is
ON-load auger, fan, heater, unload auger does not
operate. 1. Press the dryer power start button.
2. Refer to the problem listed for load auger, fan heater and unload
auger in the following sections.
Display shows “MOTOR OVERLOAD” message. The thermal overload on the fan motor, load motor, unload motor or
an auxiliary motor has opened indicating an overloaded motor.
(The overloads must be manually reset.)
Display shows “VAPOR HIGH TEMPERATURE”
message. The LP gas vapor temperature sensor located in the gas train
downstream from the vaporizer has opened, indicating that the
vaporizer is running too hot and must be readjusted. (This control
is a 200°F limit which automatically resets when it cools.)
Display shows “LOSS OF FLAME” message. The flame sensor has failed to detect a burner flame, indicating
that the burner has failed to light. There is a problem with the flame
sensing circuitry or the dryer is not getting burner fuel.
When making high voltage tests with “live” circuits, be extremely careful.
Follow established safety practices. Turn power ON for testing only. Do not
attempt to make the dryer operate by using a jumper wire to bypass a defective
safety component.