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I have this same heater and I'm smelling gas, smells like

I have this same heater and I'm smelling gas, smells like it's coming from the pilot button on the gas valve. Does this sound like a problem with gas valve or could it be heat exchanger possible?

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Rick

Owner

23,994 satisfied customers
I have a R22 rack system with 5 compressors, the problem i

i have a R22 rack system with 5 compressors , the problem i am facing is there is a lot of liquid coming back in the compressor and there is a huge ball of ice getting on the compressor winding and in the front , we have almost around 50 evaporators with TXV and i checked the superheat of the evaporators and it is between 11 to 16F , no ice on evaporator , and they are open freezers ISLAND TYPE FREEZERS with no box covers over them , but around a year back we did not had this problem of liquid coming back to the compressors, but started since 4 or 5 month , the freezers are of minus temperature and in every freezer the temperature is -18 to -25 , and i want to ask do you check subcooling on such a big system with so many expansions valves ?

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Brian HVAC Guy

HVAC/R Consultant

High School

1,464 satisfied customers
I have a weil mclain boiler that was installed in 2004. It's

Hi, I have a weil mclain boiler that was installed in 2004. It's a LP version and I have two problems: 1) when I take a shower the boiler comes on, runs its cycle and when it hits 4186 the power to it goes off. The screen is dark, the boiler is completely shut down. I have had plumbers and electricians out here, no one knows what is causing this and it will mean I won't have heat or hot water for the winter. 2) there is a leak somewhere in the system, I lose 2-4# ***** a day. I think we'll be able to put a valve on that to refill as necessary. The boiler itself had a maintenance kit put on it last October so it has been maintained. I really need help as I'm out of options for local service people.

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Rick

Owner

23,994 satisfied customers
I have a LAD504TDL Frigidare dehumidifier. I cleaned the

I have a LAD504TDL Frigidare dehumidifier. I cleaned the coils and the water pan. If I run it without the cover (so that air passes around the front coil rather than through it) the front coil ices up. But with the cover in place, the ice melts and the unit doesn't seem to be collecting any water. The compressor is very hot. The back coil seems to only heat into the very first pass of the copper through the exchanger. Is this consistent with low refrigerant? The Refrigerent is R410A; 7.94oz. Can I add this myself?JA: Did you double-check the thermostat's settings? And what about the filters?Customer: yesJA: What are all the symptoms of the problem (error codes, flashing lights, etc.)?Customer: no codes, no flashing lights. everything seems to be working, but the water is not condensing. the cooling coil is only slightly cool at the very bottom and the back side heat exchanger is only slightly warm up top.JA: What happened just before this problem started? What troubleshooting have you tried?Customer: cleaned the coils, cleaned the water pan. There was dust built up on the coils. The water pan outlet was partially clogged with something like mud. But it was running OK - the fan and the compressor seemed to kick in OK. Just not condensing and outputting waterJA: Anything else you want the HVAC tech to know before I connect you?Customer: no

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Phil

Consultant to Engrs, Govt & Contractors

Degree, Mech Engr Technology

9,892 satisfied customers
After the heater turns off the fan keeps running and shuts

After the heater turns off the fan keeps running and shuts off one minute or so later. Is that controlled by the thermostat or built in to the heater?What about in ac?

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Rick

Owner

23,994 satisfied customers
I was wondering how old my furnace is? it appears as i only

I was wondering how old my furnace is?JA: Did you check the furnace's filters?Customer: it appears as i only have a side unit which is a Space Guard High Efficiency Air Cleaner Model 2200. the furnace is a pusle 21 by lennox.JA: Do you plan on doing the work yourself?Customer: I was just doing homework to see if it is time for a new furnace or what. I know that my air conditioner unit is about a 1984 model and it is on its last leg.JA: Anything else we should know to help you best?Customer: That is all I know so far. I can go look for more info.

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Phil

Consultant to Engrs, Govt & Contractors

Degree, Mech Engr Technology

9,892 satisfied customers
How is the Keeprite DC90 furnace expected to last and what

How long is the Keeprite DC90 furnace expected to last and what are the most common causes of complete failure?

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HVAC Guru

Service Technician

Associate Degree

26,112 satisfied customers
I have an old MOC-80-1 furnace in my mobile home. Seems to

Good afternoon, I have an old MOC-80-1 furnace in my mobile home. Seems to be working well. Co2 detector in the vicinity, but not in the closet with the furnace. Combustion chamber is shot so I will need to break it down to replace and clean it while I am in there. Should I just buy a new furnace?JA: Did you check the furnace's filters?Customer: There are no filters. It is an permanent indoor filterJA: Do you plan on doing the work yourself?Customer: No Co2 issues I was thinking about it.

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Rick

Owner

23,994 satisfied customers
I installed a I c p furnace 3years ago in my

I installed a I c p furnace 3years ago in my trailer,converted it to a down flow and put an a coil under it with a transition boot to my existing ductwork and it has ran great up until December,2015. I had a trouble code of "ignition proving failure" 6 short flashes and 1long meaning it tried 3 times to answer the call for heat then locked out. Tried the component self test cycle,checked current value of flame sensor,was low so for $8 I changed,checked gas input pressure,even called gas supplier and the tech checked pressure at the meter while I had the furnace,the 100,000 b t u demand hot water running and 5 burners on our new stove no pressure drop at all at meter! January 15,2016 I was home and heard two loud bangs then furnace dropped out went to see trouble code it was " limit circuit fault" 4 short flashes which meant the flame rollout sensor saw a backdraft of heat off the burner! Had a company come in and it dropped out on a 6 flash code while he was working on it,checked the high limit disk and it was open,caught it before it cooled and reset itself so he changed it on January 20,2016. It ran good for 4-5 days then same 6-flash code again and a lockout. I have tons of return air grilles on the closet door,behind the fridge,and thru the floor in the closet too! The furnace closet door used to slam shut if you held it open 6" but now with all the return air available it does not. Any suggestions or thoughts on this would be greatly appreciated! Some guys I talked to say the insulation may have come loose around hi limit disk and obstructs air flow to it makes sense? I really need to be able to trust a 3 year old furnace oh by the way not a single issue with the air conditioning part of the system no coil freezing great temps off the air registers will take my 43 year old trailer down 10 degrees in less than an hour! I don't know how to troubleshoot the secondary heat exchanger to see if it's clogged its plastic not stainless I have vacuumed the primary tubes with a 1" soft bristle tube brush wasn't that bad! I've covered igniter resistance cold(51.2 ohms) flame sensor hi limit disk even shop vac the vent pipes no nests or spiders

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Airheatman

Heating & Air Conditioning Contractor

6 years college

9,952 satisfied customers
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