ReplySorry, we cannot give DIY advice here. I will tell you this, however: fuses cost less than transformers.
Regular Guest
I am at my wits end with this air handler. I have replaced the the transformer 7 times in the last 3 months. I have replaced every component in the control box, the heat strip and replaced the control box itself. I've also replaced the thermostat in hopes that this would resolve the problem. The system is a First Company Horizontal Fan Coil HX series pumping R22 through a Bryant 3 ton condenser. This problem begin during the summer. The resident would get at least a week of no problems with the condenser and then the transformer would blow. We are now in heating season and as soon as the 10Kw strip is energized, there goes yet another transformer. Any ideas of what may be causing this aggravation and why it isn't happy with heating or cooling?
Professional Member*
Sorry, we cannot give DIY advice here. I will tell you this, however: fuses cost less than transformers.
Regular Guest
I am not a DIY. I am HVAC certified and have been for the past 2 years. Thanks for your reply, anyways.Originally Posted by cjpwalker
Professional Member*
Then you should know to fuse the transformer until you find the issue and you would not be replacing them.
__________________________________________________ _______________________
Experience is a hard teacher because she gives the test first, the lesson afterwards" ~ Vernon Law
"It's what you learn after you know it all that counts." ~ John Wooden
"When the teachers become unteachable we're all in trouble" ~ Mr. Bill
"Remember "Pro" is only a name, it's not always a mindset determined to do everything correctly" ~ Mr. Bill
Professional Member*
I could tell you what to CHECK but because of your status does not Verify you as a certified professionAl we would be breaking the rules. I hope your TRANSFORMER issue gets resolved.
If you're too "open" minded, your brains will fall out.
Artificial intelligence is no match for natural stupidity.
Regular Guest
Thank you cjpwalker and Mr Bill for the advice. I appreciate your responses and will do so. Just been a long 3 days of trying to isolate this problem. I have run into this issue several times with other units and have been successful with correcting the problem. Been going through my notes and talking with other techs. I'll get it solved, just need to figure what I missed.
Professional Member
Moved thread to tech to tech Residential
AOP Committee/Professional Member*
Since you are new...
1) get 15 substantive posts under your belt and apply for Pro membership
2) when you get Pro membership, post in the Pro Residential forum. We don't post a lot of technical info here in the open forums, because they are easily indexed by search engines.
[Avatar photo from a Florida training accident. Everyone walked away.]
2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
AOP Forum Rules:
Professional Member*
Fuse every load, then determine where your problem is.
Your trouble shooting skills are poor. Be more systematic. Learn, advance to next step. Replacing same part over and over is wasting your bosses time and inventory.
Regular Guest
I appreciate your response. I'll get it. It hasn't beat me yet. :-)
Regular Guest
I appreciate your candor. Your are absolutely right and is wasting my time as well. I am still learning and improving everyday. Thanks.
Professional Member*
Hey, I can remember back in the early 70's when I was kicking off, I would carry 10 transformers because I had to learn from someone to fuse them also.
__________________________________________________ _______________________
Experience is a hard teacher because she gives the test first, the lesson afterwards" ~ Vernon Law
"It's what you learn after you know it all that counts." ~ John Wooden
"When the teachers become unteachable we're all in trouble" ~ Mr. Bill
"Remember "Pro" is only a name, it's not always a mindset determined to do everything correctly" ~ Mr. Bill
Professional Member
never understood why all transformer don't come with built-in breaker.
Professional Member
Then the transformer manufacturer wouldn't sell any transformers
Professional Member*
I like the multi fuse idea to narrow down cause.
Col 3:23
questions asked, answers received, ignorance abated
Professional Member
I ran into something similar a few weeks ago, went through 3 transformers before i finally wised up and asked a senior tech.
Professional Member*
If I am blowing transformers I just don't put another one on until I find out whats making my VA to high. Chances are its cause someone took a 75VA off and replaced it with a 50VA.
If you're too "open" minded, your brains will fall out.
Artificial intelligence is no match for natural stupidity.
Professional Member*
I always carry a transformer with a built in circuit breaker when i come across a bad transformer... I use it as a troubleshoot aid
Professional Member
Just check your wires for a short
Professional Member
Is it blowing on the primary or secondary side?
Posting Permissions