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Recent Air Handler questions

I purchased A Rheem hm4821JA in2014. Is there another filter

I purchased A Rheem hm4821JA in2014. Is there another filter that needs cleaning/replacing. I change the air filter every 60 days, and have tested the safety switch which would turn the unt off in the event of zero h2o flow ffrom the drain. However I am having more h2o than normal I'm the drip panJA: Did you double-check the thermostat's settings? And what about the filters?Customer: checked the thermostat and seems ok have changed the air filter but am wonderiif ofthere is an internal filter behind the air handler panles that I may need to clean/change?JA: Do you plan on doing the work yourself?Customer: only if it I is a filter will throw the brakersto insure no power is on the unit and verify with my mutimtereJA: Anything else we should know to help you best?Customer: yes is ther another filter that a home owner can change on tis unit

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Rick

Owner

23,620 satisfied customers
I have a Lennox heat pump with the inside air handler

I have a Lennox heat pump with the inside air handler leaking water, running out through filter. Took filter out and shut off unit and no more leaking. Unit is coolingJA: Did you double-check the thermostat's settings? And what about the filters?Customer: I did check the thermostat, ok. Filter was dirty and I was starting to change it when I found this. Started using paper filters early this season with no problems.JA: Do you plan on doing the work yourself?Customer: If I can.JA: Anything else we should know to help you best?Customer: Cannot afford to replace this. It is a 1.5 ton unit cooling a condo.

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HVAC Guru

Service Technician

Associate Degree

25,418 satisfied customers
I want to use my cooling system to reduce humidity in the

I want to use my cooling system to reduce humidity in the house. I have a Trane ser20 system with 2 stage cooling and variable speed blower. I have the prestige IAQ thermostat with red link and the EIM interface. I understand to wire one terminal from U1 to the RH terminal. My question is when it states wire other U1 terminal to low speed fan, do I just wire to terminal G and it will call for low speed fan or do I need to locate the low speed terminal of my fan motor and wire into that? Thanks. Steve

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BillyHvac

Journeyman Service Technician

State Licensed Mechanical Contractor

11,652 satisfied customers
Evolution is stuck in standby mode. Blue light is constant -

Bryant evolution is stuck in standby mode. Blue light is constant - not pulsing despite inside temp being above cool set point. Have replaced filter and checked all breakers. Condenser unit runs for 5-10 minutes but no cool air. Will start up again when I turn system off and back on. Air handler is functioning - fan runs and moves air when manually set to high. Was working fine - went away for three days and not working right when we came back. All units are 5 years old. Last system servicing was 2 years ago.

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HVAC Guru

Service Technician

Associate Degree

25,418 satisfied customers
I have a rheem rhllhm4821ja air handler and a rheem prestige

I have a rheem rhllhm4821ja air handler and a rheem prestige compressor. The fuse blows on the ah circuit board frequently and now is doing it every few minutes. The fan in the air handler sounds smooth and fine except it changes from normal high speed to low speed frequently. After this high low problem repeats for a while, the circuit board fuse will blow. The unit does cool until the fuse blows. There is also a relay click on the circuit board when this speed change occurs. The service tech thinks it is either the circuit board or the motor.Any ideas or debugging suggestions?

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Airheatman

Heating & Air Conditioning Contractor

6 years college

9,778 satisfied customers
My outside unit is just humming, filters clean and

my outside unit is just hummingJA: Did you double-check the thermostat? And what about the unit's filters?Customer: filters clean and thermostat set at 73 degrees but the thermometer showing 80. It's a heat pump. The fan on top was not turning until I bumped it with a screwdriver but it runs slow. Compressor still just humming.JA: What are all the symptoms of the problem (error codes, flashing lights, etc.)?Customer: It's a 12 year old goodman so no flashing lights or anything. Not one issue to this point. So the compressor just hums and the fan won't start unless I bump it.JA: What happened just before this problem started? What troubleshooting have you tried?Customer: We just noticed it getting hot in the house and looked at the thermostat then I looked out the window and the fan wasn't running. the air handler inside is working. It's like the compressor and the fan aren't getting enough power. I have 220 at the lugs on the unit and the contactor pulls in but the compressor just hums quietly.. Maybe the capacitor?JA: Anything else you want the HVAC tech to know before I connect you?Customer: Nope

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Gaztech

Owner

Vocational, Technical or Trade School

438 satisfied customers
I have a trane TAM7 unit and attempted to install a nest

I have a trane TAM7 unit and attempted to install a nest thermostat. I unknowingly left the power supply to the thermostat on and had two wires (not sure which ones) touch and spark/pop for a second. At that point, I cut the power and put the old thermostat back on. Flipped breakers for the condenser and blower/airhandler the system was inoperable. I read the manual and located a 3.2 amp fuse, (near the blower) replaced it, and now the blower/fan runs but the condenser/heat pump will not run and no cold air is blown from vents. Any ideas? Did I fry the AFC board?

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220 satisfied customers
Lennox Air Conditioner Model and Serial Numbers Compressor:

Lennox Air Conditioner Model and Serial NumbersCompressor:Model: XP16-048-230-08Serial Number: 5815D07536Air Handler:Model: CBX32MV-048-230-6-07Serial Number: 51615D07094I like my indoor humidity at around 46%. In the evenings, at night, and in the morning my system will maintain this. However in the afternoon from about noon till 7:pm I cannot get it lower than 48%. I'm located here in Ocala, Florida.

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Airheatman

Heating & Air Conditioning Contractor

6 years college

9,778 satisfied customers
I have a Carrier furnace and a/c, model # FX4DNB/FX4DNF. It

I have a Carrier furnace and a/c, model # FX4DNB/FX4DNF. It is installed in my attic and I am not the original owner, so I don't have a user manual, nor am I familiar with this type of installation.What I want to know is how to access and change the filter. Thanks!

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Airheatman

Heating & Air Conditioning Contractor

6 years college

9,778 satisfied customers
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