Results 1 to 6 of 6

Thread: YORK YSCACA

Hybrid View

  1. #1
    Join Date
    Feb 2010
    Location
    MEXICO
    Posts
    472

    YORK YSCACA

    GOOD DAY GUYS

    I require to change a real time clock, part # 031-00955-00 someone will have the procedure or service bulletin regarding this machine is a YSCACAS2.

    thanks

  2. #2
    Join Date
    Jan 2011
    Posts
    1,173
    Have you ever changed an EPROM? Same idea. Use the same tool you should use to change an EPROM. Make sure the notch on the RTC is at the same location as the silk screened notch on the board. There are no instructions in the manual (that I'm aware of) or service bulletins for this procedure.

  3. #3
    Join Date
    Feb 2010
    Location
    MEXICO
    Posts
    472
    change the rtc with the machine powered?

  4. #4
    Join Date
    Jan 2009
    Location
    Jersey
    Posts
    126
    Quote Originally Posted by servicetrane View Post
    change the rtc with the machine powered?
    No!
    power down and change, record all setpoints first, they reside in the rtc chip. You will have to re enter the settings after the change.

  5. #5
    Join Date
    Jan 2011
    Posts
    1,173
    Quote Originally Posted by servicetrane View Post
    change the rtc with the machine powered?
    I guess I made an assumption. You would never change an EPROM with the panel powered up. And as DFZ pointed out, you need to record all the info that is stored in the RTC. Number of Starts, Number of Hours are probably two of the most important. If the chiller runs in local mode, your leaving CHW setpoint will have to be reentered.

  6. #6
    you must be very careful to avoid the static damage electronic components as they are if you can place your anti static wrist

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event