Operation
12/00 UDC2300 Controller Product Manual 63
Error Codes
Table 6-9 Procedure for Accessing Accutune Error Codes
Step Operation Press Result
1
Select Accutune
Set-up Group
SET UP
Upper Display = SET
Lower Display = ATUNE
2
Go to Error Code
Prompt
FUNCTION
Upper Display = (an error code)
Lower Display = ATERR
Table 6-10 lists all the error codes, definitions, and fixes.
Table 6-10 Accutune Error Codes
Error Code
(Upper Display) Definition Fix
RUN
ACCUTUNE RUNNING
The Accutune process is still active (Read Only)
NONE
NO ERRORS OCCURRED
DURING LAST ACCUTUNE
PROCEDURE
None
IDFL
PROCESS IDENTIFICATION
FAILURE
Autotune has aborted
because an illegal value of
GAIN, RATE, or reset was
calculated.
• Illegal Values
– try Accutune again.
• untunable process -- contact service support
representative.
ABRT
CURRENT ACCUTUNE
PROCESS ABORTED
caused by the following
conditions:
a. Operator changed to
Manual mode
b. Digital Input detected
c. In Heat region of output
and a Cool output calculated
or vice versa.
Try Accutune again
Aborting Accutune
To abort Accutune and return to the last previous operation (SP or output level), press
MAN-AUTO/RESET key to abort the Accutune process.
Completing Accutune
When Accutune is complete, the calculated tuning parameters are stored in their proper
memory location in the controller, and the controller will control at the local setpoint
using the newly calculated tuning constants.
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