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Its an OPN-RTUM2
Ive got a set of 9 units with these running off the ivu. I dont know what the actual server module is, we havent physically found it yet. What i would like to do is download the old...

Id like to get my hands on this tool. Ive got a client that i need to reprogram a opn board for. And ill be damned if i pay $1000 for a usb adapter and dvd. We got the system operating off a basic...

I watch alot of youtube and instagram shit about hvac and constantly see single wall warm air pipe used as exhaust pipe of 80% furnaces to connect from the furnace to the b vent which actually...

Just based on the large variance of superheat id bet the txv is not working correctly or it has an orifice, or possibly txv screen is acting as an orifice.

1st verify bulb is working by running...

just calculate the velocity required to keep the oil miscible in the lines using the compression rate of the compressor and the lineset length and size.

get a tougher skin kid.

on target subcool with high superheat could mean a few things.
1. charge is low and condenser is underperforming
2. evap/condenser performing normally, but low charge...

Ecobee 4 IMO the best wifi stat available right now.

I am having a few noise issues with several ceiling cassettes ive installed.
Model: SLZKA09NAR1

Stat: PAR-33MAA

Im wondering if anyone has access or a link to the full function codes for these...

Low superheat, add more refrigerant. Idk why that seems like the wrong thing to do.

I think you can rattle can those big white pipes into big black pipes. I always let customers tell me what they want.

It was somewhere between 0 and 20 on the service manual. Hard to tell on some of those little folded up sheets.

Helped out a fellow construction worker this morning.

The coil was frozen solid last night. Had them turn everything off.
I was there about 3 months ago to fix the ac. Blown cap and i cleaned the...

If you measure the temperature of the high side line entering the condenser coil it will be superheated vapor. If you measure after the condenser coil it should be subcooled liquid. A good...

Thanks for the laugh.

its possible the system is not longer operating as it should be.
what thermostat do you have.
what climatemaster do you have.
did you leave a window open upstairs?

Doing that on my 4 ton ac tomorrow. Lets find out together.

I did not use an electronic leak detector. Just alot of bubbles. Im still trying to figure out the difference between straight piece copper and rolled soft copper. And if the benefits of having...

Waterflow? Does the unit have its own flow center or is it a solenoid? Or is it twinned with a relay and paired with another pump. Pull off the spade terminals on the hipres switch and replace them...

Assuming the ground loop was done using HDPE pipe and fusion fittings and installed properly, big LOL there. Buy some geo loop conditioner pump it into the system and pressurize the loop to 80-100...

Sounds like sludge buildup in the condensate then the system goes into a condensate overflow fault.

Initial pressures were 145hi 40 lo with subcooling of 0 degrees and superheat of about 65. Idwb 74 and oddb 79. Added 4lbs r22 then 170 hi and 70 lo with 9 subcooling and 14 superheat, slightly over...

Honestly im not 100% sure i just know that it is the copper you get in straight lengths. Which i have never used before in residential. I always assumed that copper of that kind was not to be used as...

I have a friend with a system where i am very close to certain there is a leak in the wall which goes up 2 stories to the attic.
Ive leak checked the system in all accessible locations and im sure...

sounds expensive. just take a quiet and efficient standard condenser with ambient control and attach that to a water/ref coaxial with a txv and a pump. wire everything off a contactor and any 24v...

DX Equals way more money. If you want to steal the tax credit just install a condenser for cooling with a geo unit and only use aux for heat. Problem solved you shaved a corner. Dont forget to change...

Its a WF so im assuming the port size is 1-1/4 " what you could do is figure out which side is leaking remove the pipes from top and bottom of the flow center. Remove the pump on that side and just...

Its a refrigeration system.
water is pumped through the heatexchanger, usually a coaxial heat exchanger. water in the center and refrigerant on the outside.
same as a water condenser to water...

I think what i said has been heard loud and clear and there seems to be tons of valuable information in this thread as to go about pulling a vacuum. But if you have good working equipment with a good...

The best method to pull a good vacuum is to have a pump that pulls down low, maybe 50 microns or better, with good oil and a set of gauges that dont leak under vacuum. i generally pull to 100...

Its pretty common to see a screen failure after about 5 years for those Vision Pros.

I have resolved the issue. After i uninstalled the app and cleared cache, i then reinstalled the app and removed the existing location which failed made a new one and the wifi works for now. they...

Just put a giant ****ing lineset on it. By the time all the oil is out of the compressor you will be doing sales at a different company. Oil return is an old myth. New compressors are sealed and dont...

I would check the polarity of the input voltage, black wire is the hot wire. But it sounds like a bad board. 1.5 microamps is plenty for the flame sense. Check those wire ends.

Ive been doing this a while im not quite sure what your talking about here. Are you asking about why manufactures have pressure charts or are you asking what principles come into play when you want...

I have not figured out the issue. I did speak with tech support and they think its possibly a bad batch. I bought 2 and same problem with both.
During the app setup on the phone it refuses to...

Ive recently, 3 weeks ago, purchased a new T6 pro from the supply house. Installed it at my house to test it out. As a thermostat everything works fine. Single stage 90% gas with simngle stage ac....

what opens the valve.

what kind of "compressor" are we talking about.

if the end switch on the actuator is used to energize the y terminal at the unit board, does the o terminal need to be...

basically the 1 2 and 3 on the bottom are as follows
1 - common
2 - 24vac turn clockwise
3 - 24vac turn counter clockwise
the top selector switch will reverse that order of 2 and 3

the right 1...

how many forced air zones and how many radiant zones and how many thermostats share equipment.
you keep saying Tstats plural. so im assuming every radiant zone has 1 of the 8800s and every forced...

my two cents.
from what i have read it appears the system "works" in cooling mode. when switched to heat mode the system runs for a short period until it kicks high pressure or internal overload....

I know mitsubishi makes water source condensers for their citi multis, only 3 phase at this point. As soon as they step up and make them single phase, WF and Climatemaster are going to be F'd right...

YES.
A 4 ton ground loop in moist soil could be 1/2 the size of a 4 ton loop in bone dry soil. The moisture in the soil will greatly effect the radius of heat transfer around each tube in the...

Im assuming this system worked perfectly for years and years without getting the ground loop to near 100 degrees.
Things to check
1. Verify the amount of water flow going through the heat...

Anyone see the pieces of pvc used to prop the fan up higher, assuming the replacement motor shaft was too long and hitting the compressor. The motor replaced on that unit was not the stock motor. ...

Airflow probably but also i would imagine an overcharged system. The subcooling is normal, but superheat should be somewhere around 20-25 at 80 degree ambient and 75 indoor unless ur humidity is...

If its closed loop, the pump is too small. If its open loop, its piped wrong.

Yep do this.
And btw checking the charge should be done by weighing out the refrigerant by reclaiming it. Also remeber when you reclaim even if to a vaccuum several ounces of refrigerant will be...

Probably a 30 and a 20 in parrallel to replace a 50 lol.
Heres my question, i have a laptop that wont turn on but i replaced all 3000 capacitors and it still doesnt work. Is it fixable?

I pull a vaccuum, make sure it holds, then leave it on and slowly purge from the vapor to liquid line. I close off my low side valve and leave the liquid open. Once i see the liquid line needle move...

Failed txv coupled with leak? What is the subcooling and superheat. And wtf is common suction, is this a multi compressor unit. Not attacking you but i see many problems here and no information of a...