Troubleshooting/Service 
334  UDC3500 Universal Digital Controller Product Manual  3/07 
Step  What to do 
11 
Contact your Honeywell Representative to place an order. Please have a 
company purchase order number available before you call. The order entry 
person will ask for the following information: 
1.  Software Upgrade Part Number(s) you require per 
Table 8-3 
2. 
Model Number of your instrument(s) 
3.  Serial Number of your instrument(s) 
4.  Code Numbers 1, 2 and 3 from your instrument(s) 
5.  Purchase order number. 
 
With this information, a new code number set will be generated for your 
instrument(s). 
12 
When you have the new code number set provided by Honeywell, repeat 
steps 1 to 6. 
13 
Press the 
Func-Loop 1/2 key. The instrument will now display  
“XXXX” “ENTER1”, where XXXX is a unique code number for this particular 
instrument. Using the 
 and   keys, enter the new Code 1 number. 
14 
Press the 
Func-Loop 1/2 key. The instrument will now display “XXXX” 
“ENTER2”. Using the 
 and   keys, enter the new Code 2 number. 
15 
Press the 
Func-Loop 1/2 key. The instrument will now display “XXXX” 
“ENTER3”. Using the 
 and   keys, enter the new Code 3 number. 
16 
Press the 
Func-Loop 1/2 key. The instrument will process the new code 
numbers and add the new software feature. If the code numbers were 
entered incorrectly or if the wrong code numbers for this particular 
instrument were entered, then the controller will go into Manual Mode and 
flash the message “FAILSAFE” on the lower display. Check the code 
numbers being entered and repeat steps 12 through 16. 
17 
When the instrument finishes the operation, it automatically resets itself and 
restarts in the product mode. The instrument configuration now includes the 
added software feature(s).