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CLASSIC 800 Product Manual
Troubleshooting
Section
7
LED Fault Indicator
The CLASSIC 800 is designed so that any error condition will be immediately detected and displayed as a FAULT
condition on the Display Panel.
• The diagnostic circuit continuously monitors the operation of the heater, sensor elements, connecting
pathways and all the aspects of the Electronics Module.
• To prevent any possibility of an intermittent FAULT the FAULT Code remains until the problem is corrected.
• When in FAULT MODE both relays will de-energize and remain de-energized.
• The 4-20 mA output can be programmed to revert to a value of either 3.0 mA or 21 mA to indicate
FAULT mode. For more information see Section 2 “Installation Guidelines, View or Adjust the 4-20
mA Fault Mode Configuration”.
• All FAULT Codes are automatically recorded in the EVENT LOG. The EVENT LOG may be viewed by in
the Kayden RCM Software.
In the event a FAULT occurs, the Display Panel will display a FAULT LED. If the unit enters FAULT MODE one of
the following will be displayed:
Fault Condition Cause Display Panel Solution
0 (far left) LED
& 1, 2 or 3 of 40
- 75% (center)
LEDs ON
(not flashing)
Self-Test Error
This condition
may be caused
by an error in
the Electronics
Module, internal
connections,
external wiring or
the sensor itself.
Various combinations of LEDs as per
below:
Disconnect the Electronics Module and
test the sensor wiring (see Figure 24).
If the wiring resistance values are correct,
the FAULT may be in the Electronics
Module. The Electronics Module should
be returned to the factory for testing and
repair.
If the wiring resistance values are incorrect
the sensor should be returned for testing
and repair.
Note: *In FAULT Mode the CLASSIC 800 display cycles between:
a. Fault indication as described above
b. Firmware Revision and Node Address (Unit #).