Monitoring and Operating the Controller
212 UDC3500 Universal Digital Controller Product Manual 3/07
4.10.6 ACCUTUNE Error Codes
Table 4-14 Procedure for Accessing Accutune Error Codes
Step Operation Press Result
1
Select Accutune
Set-up Group
Setup
Upper Display = SETUP
Lower Display = ACCUTUNE
2
Go to Error Code
Prompt
Func
Upper Display = (an error code)
Lower Display = AT ERROR
Table 4-15 lists all the error codes, definitions, and
fixes.
Table 4-15 Accutune Error Codes
Error Code
(Upper Display)
Definition
Fix
RUNNING
ACCUTUNE RUNNING
The Accutune process is still active (Read Only)
NONE
NO ERRORS OCCURRED
DURING LAST ACCUTUNE
PROCEDURE
None
ID FAIL
PROCESS IDENTIFICATION
FAILURE
Applies only to SP or SP+PV
tuning. An illegal value for
Gain, Rate or Reset was
calculated.
• Illegal Values
– try Accutune again.
• Untunable process – contact local application
engineer.
ABORT
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
SP2
LSP2 not enabled or LSP1 or
LSP2 not in use (only applies
to Duplex Tuning)
Enable LSP2 and configure the desired LSP1 and
LSP2 setpoints. See Section
4.10.
OUTLIM
OUTPUT LIMIT REACHED
(HIGH OR LOW)
Applies
only to SP or SP+PV
tuning. Output insufficient to
get to SP value.
Check the Output Limits in the Control or Control 2
Set Up groups. See Section
3.20 or Section 3.21.
Verify that the correct Process Gain Value, KPG or
KPG2, is entered. See Section 3.10.
ATTENTION This error will cause the controller to
switch from Automatic to Manual Mode. The output
is then set to the value present at the beginning of
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