Results 1 to 12 of 12
Thread: York ycav
-
07-04-2012, 06:57 AM #1
Professional Member
- Join Date
- Jun 2010
- Location
- northwest connecticut
- Posts
- 54
York ycav
Getting a low dc bus pre- charge voltage. I have read some of the troubleshooting for this drive and it appears it could be a problem with the scr's not firing or a shorted capacitor. Anyone with any first hand experience with this paticular issue I would love to hear from you ,Thank you!!
-
07-04-2012, 07:52 AM #2
Professional Member*
- Join Date
- Sep 2007
- Location
- Somewhere in the world.
- Posts
- 1,441
It's very possible something is shorted but I can tell you that the YCAV doesn't have any SCR's it is a VFD drive very complex piece of equipment lots of things that could go wrong and you could hurt yourself or someone else if you don't understand the principles behind the technology.
Arguing with your Boss is like wrestling with a pig in
mud.
After a while you realize that while you are getting
dirty, the pig is actually enjoying it.
It is not exactly cheating, I prefer to consider it
creative problem solving.
-
07-04-2012, 09:14 AM #3
Professional Member
- Join Date
- Jun 2010
- Location
- northwest connecticut
- Posts
- 54
scr diode modules as part of their "drive" yes they do, just looking for a little input from someone who has more experience than me on this paticular machine, or maybe actually run across this very same issue !!! I am not a diy guy been in the service buisness for 30 years.
-
07-04-2012, 09:47 AM #4
Professional Member
- Join Date
- Sep 2011
- Location
- Northwest Louisiana
- Posts
- 157
Do you have service manual on drive?
A LITTLE BIT OF STUPID GOES A LONG WAY!
-
07-04-2012, 10:35 AM #5
Professional Member
- Join Date
- Jun 2010
- Location
- northwest connecticut
- Posts
- 54
No, i do not have a manual for the drive itself!!!
-
07-04-2012, 07:32 PM #6
Professional Member*
- Join Date
- Sep 2007
- Location
- Somewhere in the world.
- Posts
- 1,441
They are structurally different and operate differently. In an SCR, operating off of a direct current source, once turned on by a control signal the device will stay on if the control signal is removed. With an IGBT the device turns off when the control signal is removed. Just thought I would send you this so you can see the difference between the two.
Originally Posted by hvac1966
Arguing with your Boss is like wrestling with a pig in
mud.
After a while you realize that while you are getting
dirty, the pig is actually enjoying it.
It is not exactly cheating, I prefer to consider it
creative problem solving.
-
07-04-2012, 09:15 PM #7
Professional Member
- Join Date
- Sep 2011
- Location
- Northwest Louisiana
- Posts
- 157
Post email address
A LITTLE BIT OF STUPID GOES A LONG WAY!
-
07-04-2012, 09:25 PM #8
Professional Member
- Join Date
- Jun 2010
- Location
- northwest connecticut
- Posts
- 54
e-mail
-
07-04-2012, 09:28 PM #9
Professional Member
- Join Date
- Sep 2011
- Location
- Northwest Louisiana
- Posts
- 157
I am at the airport picking up oil pump for important customer, when I get home I'll send you an email.
A LITTLE BIT OF STUPID GOES A LONG WAY!
-
07-04-2012, 09:35 PM #10
Professional Member
- Join Date
- Jun 2010
- Location
- northwest connecticut
- Posts
- 54
Thanks !!!!
-
07-05-2012, 06:56 PM #11
Professional Member
- Join Date
- Mar 2005
- Location
- Indiana
- Posts
- 126
I had this problem two weeks ago. Luckily I had two chillers with one of them runable. Had to result to part swapping for two of the boards. My problem ended up being the SCR trigger board which is pretty expensive. Replaced it and it's running great.
-
07-05-2012, 10:52 PM #12
Professional Member
- Join Date
- Jun 2010
- Location
- northwest connecticut
- Posts
- 54
Thank you very much , I apppreciate you sharing this info it makes the troubleshooting process alot easier !!!!!!
Reply With Quote
