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Thank you to hurtinhvac and mgenius33. This was what I wanted.

Sorry about the model number. It's actually a 4TEE3C05A1000AA.

Sorry hurtinhvac. I didn't mean to be so rude. I am just a little disappointed by this thread. I thought my request was simple: Does anyone know what pins 2 and 4 do and what voltages are supposed to...

Bobster, if they are well documented, please share. I would like to know what voltages, if any, I should see down pins 2 and 4.

Please explain how I know the board checks out if I don't know what voltage it's supposed to send to the motor?

I have checked the motor and it is fine. I am left to believe it is either the dc...

I went to a service call like this a while back. The previous tech had replaced a failed R410 high pressure switch. Unfortunately, he had installed a limit switch intended for R22.

Apperantly I don't know how to upload a photo.

Thanks mgenious33. I have been meaning to apply.

I am dealing with an Acont900 series American Standard communicating air handler.

I have...

Hi guys.

American Standard variable speed communicating unit.

What do you think Pin 2 and pin 4 do. Any idea what voltages I should see on them? Pin 1 has 12Vdc to common.

Thanks.
...

This is a great idea. I had never really thought of it. However; the op was asking how to do this durning a maintenance. I sure as hell hope he is clocking a meter, waiting 20 mins for pressures, and...

It's actually quite easy and a great tool to check safe operation of an appliance.

Turn off all Gas Appliances in the home.
Turn on the appliance being tested, to the highest firing rate (be...

This is the formula for air: Btus = cfm x delta T x 1.08.

This is the formula for water: Btus = gpm x 500 x delta T.

Manipulate the formula to what you have.

Does this answer your...

What specifically is your question?

Follow Up:

The building is owned by a company that does a lot of business with us and I wasn't looking to get anyone in trouble. We made multiple attempts to contact the maintenance guy but he...

I could not imagine relative humidity at 25% in the winter. Too dry.

A couple years ago I went to a customers house that was complaining of hardwood floors cracking. I installed a data logger...

I could not imagine relative humidity at 25% in the winter. Too dry.

A couple years ago I went to a customers house that was complaining of hardwood floors cracking. I installed a data logger...

If your in gas heat, clock the meter to get btus and then use the above formula. If electric heat, calculate btus by 3.412(IxE). When I'm in cooling I override the compressor and add a known amount...

Follow Up:

Thanks for the input guys. After reading your suggestions, I did a test. I turned the gas off and turned on the shower. When the temperature started to go cool, (13 minutes), I turned...

Unhook the leads from the pressure switch. Let the inducer motor start and then touch the leads together within 2 seconds. The IFC needs to see open first, then closed.

The vision pro 8000 is an awesome stat with a ten year warranty. I have personally installed hundreds of them with maybe 6 having issues. Also, the new Honeywell has a wireless feature to allow the...

Where I work we are encouraged to look outside the box. This is very difficult to do. It is hard to not get tech tunnel and focus only on the problem. We recieve small commissions on additional tasks...

You mean liquid until you get close then slowly throttle liquid thru the vapour side right?

These are switches not loads.

Cool. Thanks guys. Good help.

Hello.

I have been limping along this pos split system for a couple of years now. It is 30 plus years old ac unit with electric heat. It didn't have any maintenance done on it for years. The...

Thanks. Crankcase heater for sure. I picked one up today. The ambient kit is already on site so I'm not sure which one it is. What is a pressure switch bypass timer?

Yes. For condenser fan cycling.

If the dip tube was the problem would the water change temp quickly. It takes about 10 mins to start getting cold and then it quickly turns to luke warm. When the shower starts it is very hot (normal...

Hi all.

I have a 5 ton goodman condenser that needs to be able to provide low ambient cooling. It's a 410 unit.

What should I set my cut out / cut in pressures at?

Thanks.

This isn't really an HVAC thing but I thought I'd ask it and see if anyone has any suggestions.

I am staying out of town for the next month renting out a suite. I've noticed that the hot water...

A real life perspective. I have an HRV and a humidifier. I live in BC Canada. Winter temps where I live get down to about -2C (30F). I have standard double pane windows installed in the early 90's. I...

I've sent you what I have. I hope it helps. It tells you exactly what wires should have voltages and what voltages they should be. Good luck.

Ps. More then once I have had the 16 pin backwards in...

Hey Transformed. I hope I didn't sound condescending when I used the word "simple". That was not my intention. I know how frustrating these can be.

I am sorry for my delay in responding. I am out...

You ever notice how many random "friends" the boss has?

Navien stores the last twelve errors. You shouldn't need to experience the problem to know whats going on. Call the homeowner and ask for the model number. It's on a white sticker on the right side...

Stick a ductless system in. Put one head at each end of the mobile home. Set the fan on the furnace to low and circulate the air for balance and filtration.

I work a lot on Navien tankless water heaters. if the model in question does not have an internal holding tank it will give cold water sandwich on low flow shower heads. Does the model number have an...

Thanks J-Kerch. I'm truly hoping its not a problem on my end. I've told them to have an experienced electrician take a look at the panel supplying the condensers.

Re: Acid Away. I don't...

^ agree. Two speeds at once. I don't think that supplying 220 to a 120 volt motor would blow it up. I would think the motors thermal overload would open.

Is it 230v or 120v

Did you use a start capacitor instead of a run capacitor?

I understand the book part but dude, there are a lot of experience based questions. Ex. Color of natural gas flame, three phase motor rotation. How do you have 6 years HVAC experience and not know...

Hire a professional duct cleaning company. Unless, of course, you have duct cleaning equipment. But then you probably wouldn't be asking this question.

I totally agree. Go to the boss with this suggestion and pay for the course yourself.
Great suggestion tocoolforschool.

Thanks. This made me laugh. I expected one or two questions but I just kept scrolling, and scrolling, and scrolling.....

And don't forget to spend an hour staring at the instructions on how to use their reducers!

@ hvac69
I think I will attempt to switch legs. I also think I will ohm the compressor windings after another day or two of run time. And just to note: the imbalance is not 20.5%. It is actually...

Of course. I have a very good relationship with my supplier and the staff do their best but ultimately they are directed by corporate rules. They can only do so much. I have no tool allowance thru my...

Anyone know of any good websites to purchase HVAC / refrigeration tools. I am paying so much thru my local supplier.

I see. I was envisioning different air handlers.
So... Any other suggestions?

Hmmm. I have studied AcidAway extensively now and have learnt a lot about that product. Thanks for the heads up guys - salt AND water. Nice.

@HVAC69. Thanks for the questions. I am trying to...