Specifications

Curtis PMC 1223/33, 1225/35, 1227/37 Manual
67
8 — MAINTENANCE
diagnostic history file was cleared. The faults may be intermittent faults, faults
caused by loose wires, or faults caused by operator errors. Faults such as contactor
faults may be the result of loose wires; contactor wiring should be carefully checked
out. Faults such as HPD or overtemperature may be caused by operator habits or
by overloading.
After a problem has been diagnosed and corrected, clearing the diagnostic
history file is advisable. This allows the controller to accumulate a new file of
faults. By checking the new diagnostic history file at a later date, you can readily
determine whether the problem was indeed completely fixed.
To clear the diagnostic history file, go to the Special Program Menu (by
pressing and holding the MORE INFO key, and then pressing the PROGRAM key),
scroll through the menu until “Clear Diagnostic History” is the top line in the
display, and then press MORE INFO again. The programmer will prompt you to
acknowledge or cancel. See Section 7 of this manual for more detail on program-
mer operation.