[green light]

I recently wired a mini split on a house. The unit is [email protected] 240v. The unit is not working because the voltage the poco is supplying is 253. I guess it doesn't like that high of a voltage. The unit is designed to operate from 208 to 240. I would like to install a transformer to step the 253v down to somewhere between 208 and 240. My supply house seems to be having some trouble locating such a transformer. Any suggestions on where I can get said transformer, or other suggestions that may fix the problem?

 

[wildleg]

start here

http://www.jeffersonelectric.com/s3/site/catalog/buckBoost.pdf

 

[captkirk]

I bet its something else... most things are designed to operate with a little bit higher voltage.

 

[MDShunk]

I seriously doubt that the voltage is your issue, but I'm a little puzzled why a supply house man and an electrician are both unfamiliar with buck-boost transformers.

 

[green light]

I seriously doubt that the voltage is your issue, but I'm a little puzzled why a supply house man and an electrician are both unfamiliar with buck-boost transformers.

Were not all as smart as you. Thanks for the input.

 

[green light]

I bet its something else... most things are designed to operate with a little bit higher voltage.

The guy from the hvac company that installed it told me the voltage is too high for it to work.

 

[MDShunk]

Were not all as smart as you. Thanks for the input.

Really has nothing to do with being smart. It's pretty standard stuff. Seriously.

 

[green light]

Really has nothing to do with being smart. It's pretty standard stuff. Seriously.

No need for insults...

 

[captkirk]

The guy from the hvac company that installed it told me the voltage is too high for it to work.

Thats funny. I had the same problem this summer only the hvac guy told the homeowner i needed to run a twisted stranded wired instead of uf.....lol... needless to say it turned out to be the unit. Check the contactor in the unit..are you getting any lights on the blower..?

 

[green light]

Thats funny. I had the same problem this summer only the hvac guy told the homeowner i needed to run a twisted stranded wired instead of uf.....lol... needless to say it turned out to be the unit. Check the contactor in the unit..are you getting any lights on the blower..?

I havent checked anything. I hooked up the unit, left the disconnect off and told the hvac guy to turn it on when he was ready since he had a couple more hours worth of work and I didnt want to hang around. Im going off what the installed told me, and he seems certain its the voltage.

 

[Speedy Petey]

No need for insults...

I don't see that as an insult. I see it as an opinion.

 

[Speedy Petey]

The guy from the hvac company that installed it told me the voltage is too high for it to work.

And you believe him?
When have you known something 240V to not work @ 250V?

 

[butcher733]

I havent checked anything. I hooked up the unit, left the disconnect off and told the hvac guy to turn it on when he was ready since he had a couple more hours worth of work and I didnt want to hang around. Im going off what the installed told me, and he seems certain its the voltage.

Electricians, guilty until proven innocent.

 

[MDShunk]

Electricians, guilty until proven innocent.

Right after they figure out it's not the voltage issue, they'll blame it on the grounding. When you've "grounded it properly", they'll then find the bad part and blame the original "voltage issue" for "blowing it up". I'm not psychic. That's just how this stuff goes down all the time.

 

[Speedy Petey]

I havent checked anything. I hooked up the unit, left the disconnect off and told the hvac guy to turn it on when he was ready since he had a couple more hours worth of work and I didnt want to hang around. Im going off what the installed told me, and he seems certain its the voltage.

Do you honestly think an HVAC guy is going to say anything else in this situation? IMO you are being made the scapegoat.

The voltage in my house always hovers around 250V and I've never had a problem with anything.

 

[green light]

Do you honestly think an HVAC guy is going to say anything else in this situation? IMO you are being made the scapegoat.

The voltage in my house always hovers around 250V and I've never had a problem with anything.

I just spoke with the hvac guy again and expressed my opinion(coming from all of you)that its not the voltage. He says that the Daiken technical dude is insisting that anything over 250v will make the computer board "too hot". I'm not being blamed for the issue, just being asked to lower the voltage. I dont care if its the voltage or not, Im just trying to do what the customer is asking me to do, and Im getting paid for it. Wildleg was nice enough to post a link to some transformers, so Im gonna look into it. And yes, the supply house I deal with are a bunch of idiots. Unfortunately they are the only show in town.

 

[Speedy Petey]

I just spoke with the hvac guy again and expressed my opinion(coming from all of you)that its not the voltage. He says that the Daiken technical dude is insisting that anything over 250v will make the computer board "too hot".

Well, if they can substantiate the claim then you have no choice I guess.
I am very surprised such a thing is so sensitive.

 

[brian john]

No need for insults...

SERIOUSLY buck boost transformers are very common and pretty standard in the electrical industry.

 

[Big John]

If it were me, I'd talk directly to the manufacturer, and I'd find someone reliable (not a sales rep or technician) who could talk about the voltage tolerances the thing is designed for.

Because right now you've got people telling you that 4% off of nominal will make it stop functioning. In my opinion, that's ridiculous.

 

[brian john]

Right after they figure out it's not the voltage issue, they'll blame it on the grounding. When you've "grounded it properly", they'll then find the bad part and blame the original "voltage issue" for "blowing it up". I'm not psychic. That's just how this stuff goes down all the time.

SHHHHHHH!

I have made a lot of money proving what it isn't