How To Adjust Fan Speed On A Rheem Variable Speed Furnace
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- Опубликовано: 4 окт 2024
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If you press that button on the board twice it will display AF followed by the cfm, makes it really quick and easy
Great job brother. Didn't know some fans were adjustable on speed by adjusting the dip switches. Adding 100 cfm and dropping the cooling 4 or 5 degrees had to feel like huge improvement. Thanks for posting and keep up the good work!
you are a thorough technician and good at explaining things...thanks. my furnace is so loud i cannot talk on the phone while it is operating. crazy that years of discomfort can be solved by 2 minutes of work and no local techs have been able to fix it.
Did you just turn one of those switches down?
Had my system installed during winter, just ran the system for the first time Air flow was terrible. System was set to the lowest setting at 750... One dip switch move, system poring out cold air.. Really great job and thank you.....
Same thing happened to me after a new installation of a furnace and A/C system.
It struggled to keep up cooling the 2nd floor while the basement was a meatlocker with tons of condensation on everything metal; the furnace, the lower ducts, etc..
During a routine inspection, which of course I paid for, he found that the airspeed was set too low at install.
So I had to pay good additional money to find out the same company didn't set it correctly at the very expensive installation.
What’s a lousy company!! Hopefully you didn’t pay too much extra. What a joke though. Any reputable company would stand behind their work and do that free of charge. Thanks for sharing!
Nice video. Good find. Would have liked to see delta T so as to know if you sacrificed dehumidification for cooling. Thanks
This is helpful. My upstairs furnace fan speed is tooo high and noisy so I think I can lower the speed like this. Thanks.
Did it work? If so, which switches did you flip down?
Thank for this video. My system doesn’t seem to be blowing enough air. I should check my main board and see where my switches are at.
I know this is not the place to ask but do you happen to know if main board by EWC controls has adjustments for fan speed?
I replaced my main board with this new one so I could use google nest thermostats and for the past year I feel it doesn’t blow air like it used to.
Need to check static pressure and refrigerant level.
2:09 - great video, I have the same system and noticed the bottom isn’t taped and warm air is blowing out. I plan to tape it up like you did later in the video but was curious what ensuring no air escapes helps - warm air exits the house versus pumped into basement (increased humidity)? Thank you!
Great video. Why didn't you also check the subcooling or super heat? Maybe you did and it's not mentioned?
Thanks
The coil box standing half open was probably the biggest reason for poor air flow. The adjustment only added 100 cfm. Spreading that out though all the duct work. I know that is not nothing but air will take the path of least resistance. What was the temperature in that basement?
So on my furnace, could I reduce the fan speed by flipping DOWN one or two switches? Would it be from the same switch set?
Thank you for the video!
I measure with device about 480 fpm at a vent quite distant from furnace. How does that likely compare to cfm at furnace. I now my ac is undersized at 1.5 because installer said my old air handler couldn't handle my hotwater system air handler. Now I have 75000 btu ruud. 11 years ago. Ac seems challenged a bit. Air coming out vent is 13 f lower than thermostat room temp. Also note is that I run my fan continuously. When heat is on fan speed increases from the continuous feed. For cool it remains at continuous speed. If I put fan to auto it does come on with ac but at that continuous speed, lower thsn heat. Should note that when guys installed new furnace 11 years ago they didn't even reconnect my ac wires. I did that myself and maybe I even set speed too low then.
Did you measure the total static pressure the system was seeing while at 1,200 CFM. maybe the S/A ducting is under sized???? If the return ducting is lined make that there is not a loose piece of liner flopping around :)
With an ECM blower motor that unit is probably rated for a Max 0.8 in.wc. total static.... 0.5 is a sweet spot to be at.
I have this same board and could someone explain to me which dip switches will increase fan speed for heat? Thank you
Hi. Cool video. Do you know how to ajast speed in bryant 820ta
Thanks
Did you watch the video on the the supco umbrella so you don’t break the new one ?????
Didn’t… I busted my new one though lol
I wasn't sure which video to post this on, but about 2 months ago you had a TXV intro video, and you promised the "next" video would show how to install a TXV. Is that still on the way? 🙏
It is in the works. It should be out next week. My apologies!
@@diyhvacguy no apology necessary! Great!
Also if you go to 6:34 on this full replacement video, I show how to do the txv installation. ruclips.net/video/MUCb7sAFFbA/видео.html In my next txv video that will post next week hopefully, it’s a little different as everything is mounted on the outside of the coil box. Much easier to install and easier to work on if it ever needs to be adjusted. So keep an eye out for that one. Click the little bell and you woo be notified when a new video posts! Cheers
I have a Rheem R96V gas furnace. It's pretty loud. Will lowering the CFM reduce the noise? Am in a 2500 sq ft house (2 floors). What is the ideal CFM? Thanks!!
great video. i recently had a new rheem system installed in the summer and just recently started using the heater and it seemed to me that the blower on heat cycle was lower than when on cooling cycle. can you adjust the fan speeds of these independently? just happened to see your video and how easy it was to adjust of course you have to know which 1 to adjust the dip switch. just counting the times the light blinks and multiplying by 100. thanks
Yes you can adjust speed for heat and cool. Look in your manual and it will show the dip switch settings for each.
I think they are labeled on the board heat and cool by the dip switches
What controls the fan speed when the furnace is not actively burning? I want my fan to run all the time during heating and cooling. I want to increase the fan speed only when the AC is actively cooling. Standard speed otherwise.
How many Ton unit was this one?
Biggest issue there was the air leaks at the evaporator
How about the two code violations you didn't mention, one with the furnace and one with the tankless, and I didn't even include that awful gas piping which hopefully have drip pockets somewhere. I think you will be back with cooling issues as 100 CFM doesn't make that much of a difference and it would have been nice if you mentioned the tonnage of the A/C and furnace blower capacity.
You didn't even point out the lack of a drain on the coil That thing is gonna be rusted out and break that furnace so quick I'm surprised that lasted 5 years.
You sir, are blind 👍🏼 it has a drain and a clean out. Look back at the video.
@@diyhvacguycame here to to tell him the exact same thing. You can clearly see it off the left side of the a coil. Dude took one hvac class and thinks he’s an expert.
fortunatly its set at max speed that way it ensures to kill itself after two days comstant use what a crappy design