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SECTION 4
4.1 TROUBLESHOOTING PROCEDURES
PROBLEM
1. Aftercooler fan motor
continues to operate,
system temperature
below 35
O
F.
2. Aftercooler fan motor
not operating, system
temperature above
45
O
F.
4.2 CONTROLLER ERROR CODES
The controller display panel is used to display error codes in the event of problems with the controller. The four error codes
are listed below.
--
-SENSOR FAILURE
The "--" displayed for the temperature indicates that there is a problem with the sensor. The sensor is open or shorted.
All relays will be de-energized in the event of a sensor failure. If the sensor is damaged, it must be replaced.
EE
-EEPROM FAILURE
The "EE" error code indicates that there is a problem with EEPROM. The values read back from the EEPROM are not
the same as what was written into the EEPROM. This error cannot be field repaired. The controller must be replaced.
-60°F or 270°F (-51°C or 132°C) Blinking
The temperature display blinks when the sensed temperature is outside of the display range, below -60°F (-51°C) or
above 270°F (132°C). The displayed value remains at the display limit and the controller continues to function unless
an open or shorted condition is detected.
BLINKING RELAY STATUS
This occurs when the Relay Minimum Off Time is active. The (
PAGE 6
POSSIBLE CAUSES
Controller not set properly
Control relay faulty
No power to the control box
No power to the controller
Controller not set properly
Controller failure
Sensor failure
Control relay faulty
- TEMPERATURE OUT OF RANGE
Check the controller settings as outlined in Section 2.7. The
controller may be set in the heat mode or the set points set too
low. Set the controller to the recommended settings.
Check the control relay. Replace if faulty.
Check main electrical power source.
Check the transformer. Make sure that the jumpers on the
transformer are properly installed. Reference Section 2.5.
Check the fuses on the transformer.
Check the controller settings as outlined in Section 2.7. The
controller may be set in the heat mode or the set points set too
high. Set the controller to the recommended settings.
Check the controller settings. If the controller is properly set, check
the main power source.
Check the controller display for error codes. Section 4.2 outlines
what the error codes indicate and the necessary steps.
If the sensor is faulty a "--" will be displayed for the temperature on the
controller display. Refer to Section 4.2 for further details. If the
sensor is faulty, it must be replaced.
Check the control power at the relay coil. Check the relay for proper
operation. Replace if faulty.
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) blinks while the relay's minimum off time is active.
TROUBLESHOOTING
SOLUTIONS
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Table of Contents
Troubleshooting
