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  1. This is an incredibly bad idea. A 48va...

    This is an incredibly bad idea. A 48va transformer is <2amps @ 27volts. If the transformer has a circuit breaker its probably a 75 va with a 3.2a trip point. But I think I saw blowing the fuse on the...
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    Can draw a picture on my phone but it basically a...

    Can draw a picture on my phone but it basically a aux contact from the contactor paralleling a control relay creating a holding circuit that is broken by a lp control or a timer. Will pump down once...
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    If the line voltage doesn't change much when it...

    If the line voltage doesn't change much when it fails but the current or voltage reading at the igniter drops it has to be the board or the wire between the board and the ignitor...

    If you can't...
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    I don't do residential or light commercial...

    I don't do residential or light commercial anymore...but when I had to hire guys in the past I could get a very good sense of where people are just by talking about their last few jobs...what they...
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    I love my dv-200n 's...best pump on the market...

    I love my dv-200n 's...best pump on the market imho. Pulled down a 860 ton chiller over night with triple evac. I replace the tree fitting with a 1/2" pipe thread x 3/4" ref hose adapter then reduce...
  6. The fact that it's intermittent I would look to...

    The fact that it's intermittent I would look to things that don't happen every cycle. Heat pumps in az that rarely go into defrost with a rubbed wire on the rv coil will pop a fuse in defrost...:eek:
  7. The 485 side is the boilers, the 232 through the...

    The 485 side is the boilers, the 232 through the 485 converter(that is powered off the acs 12vdc) would go to their protonode...you need to enter pw of 6817 and set the acs to network and enable mod...
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    I have 4 or 5 fluke meters(one is a cap tester...

    I have 4 or 5 fluke meters(one is a cap tester from meterman that I am told is made by fluke or was)

    But my best meter that i can't function without is a fluke 289
    ...
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    Essentially Black is common, Yellow is run, and...

    Essentially Black is common, Yellow is run, and Brown is start...Brown to yellow "Should" have the most resistance. Black to Brown the second highest, and Black to yellow the least...A volt meter can...
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    Keep the parts you don't want melted wrapped with...

    Keep the parts you don't want melted wrapped with a rag, make sure everything is clean, use the right torch tip, go hard, go quick and get it done, then cool it off...:eek2:
  11. Thread: Txv

    by Hrdworkingacguy
    Replies
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    743

    When you say 100 degree air cooled to 70...

    When you say 100 degree air cooled to 70 "upstream", is that unit ducted into this unit? or is it a plenum return and its just dumping tempered OSA above the ceiling or into the space? If its ducted...
  12. When you have high superheat, and high sub...

    When you have high superheat, and high sub cooling, the liquid is in the condenser...The only thing that will cause that is liquid restriction of some kind(plugged drier, underfeeding TXV,...
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    If its in a place where you can afford it being...

    If its in a place where you can afford it being down a day or two, I would wait until it dies...Its better(imho) to bring in the carcass of a dead compressor for warranty, then risk getting jerked...
  14. All three circuits share the same return and...

    All three circuits share the same return and OSA??? The difference in SC/SH is the txv and/or the adjustment nut...All three circuits seems underfeeding to me...Possibly the outdoor coil is...
  15. What are your water temps??? Do you have just one...

    What are your water temps??? Do you have just one of these or are there a two paralleled together, is so do they isolate when they aren't running? :eek2:
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    These don't care....But if your differential...

    These don't care....But if your differential pressure is low and the pump is auto-reversing, switching the direction can "sometimes" give you better differential pressure...:eek:
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    2,446

    Is it a Copeland discus compressor? I have a...

    Is it a Copeland discus compressor? I have a couple 25hp and 35hp in a 100ton unit...I had a similar problem...differential pressure was like 7psi fully loaded...Those compressors run like 30-40#...
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    The bumping is from transistors of some sort...

    The bumping is from transistors of some sort opening and closing in the end bell of the motor(the drive part)...The motor is actually a 3 phase DC motor in a lot if not all cases...I have personally...
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    ECM motors that rock like that are usually otw...

    ECM motors that rock like that are usually otw out from what I have seen...:eek:
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    1,465

    It looks on the surface like liquid restriction...

    It looks on the surface like liquid restriction type symptoms...If the tech was messing with the txv he might have suspected that also and might not want to replace it under warranty...:eek:
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    I should say if it used to work and now doesnt...

    I should say if it used to work and now doesnt then bad board...Last time that same thing happened to me I pulled the board and flipped it over to find it crispy...:eek:
  22. Replies
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    1,251

    Bad board :eek:

    Bad board :eek:
  23. Replies
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    6,884

    19xrv centrif or 23xrv screw = best chillers on...

    19xrv centrif or 23xrv screw = best chillers on the market today...I like turbocor a lot but those two carrier machines own all...:eek:
  24. If you have the newer style motor protection...

    If you have the newer style motor protection module there is a service bulletin that says you need to install a bypass timer in parallel with the oil safety control...The control just opens when the...
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    I saw something online showing a 60/5uf at 370v...

    I saw something online showing a 60/5uf at 370v run cap for that unit...The three identical ohm readings are a little weird...look at the electrical data on the compressor label, does it say 3 phase...
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    condensation happens when something is lower...

    condensation happens when something is lower temperature then the dew point...It condenses the moisture in the air...If something doesn't have access to air it can't create condensation....thats why...
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    Cast iron would be "ideal" but isn't...

    Cast iron would be "ideal" but isn't required...Ive done both and they are just different...one isn't better then the other...:eek:
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    Sometimes I will render the fat out of bacon and...

    Sometimes I will render the fat out of bacon and make a roux with that...Depends on what i'm making...gumbo brown or black roux is easier but takes alot longer if you cook it in an oven for a...
  29. You can't win when it comes to 410a conversion...

    You can't win when it comes to 410a conversion from a 22 system...Trane says it doesn't matter, units with run with 50% PoE oil, 50% mineral oil...CPS sells gauges that do both refrigerants and says...
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    I might know somewhere...Does he have any...

    I might know somewhere...Does he have any schooling...:eek:
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    476

    No, blood is good enough...Others will ask for...

    No, blood is good enough...Others will ask for the turn your head a cough thing but thats on them...:eek:
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    Eddie Murphy Raw = best of all time.... Best in...

    Eddie Murphy Raw = best of all time....
    Best in the last 10 years = Richard Jeni Greatest Bits
    Best of 07' = Lewis Black Red, White, and Screwed...

    My opinion only...:eek:
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    I would talk to management...:eek:

    I would talk to management...:eek:
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    In the situation the OP talks about I would be...

    In the situation the OP talks about I would be looking to the person who bid/sold the job that said it was 8 hours and gave you nothing to go on...You can't possibly go to a job with 1/10 of the...
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    I didn't notice Ace or Gary on the list...

    I didn't notice Ace or Gary on the list either...:eek:
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    If it gets too hot in the winter and not hot...

    If it gets too hot in the winter and not hot enough in the summer there isn't much you can do with that...You don't need as many CFM in heating as you do in cooling...I think a register with an OBD...
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    I would call and complain to the register of...

    I would call and complain to the register of contractors, the BBB, channel 12(or whatever your local new station is, santa clause, the easter bunny, the bunny ranch(to blow of some steam) and if that...
  38. Every time I have seen dark oil in my gauge sets...

    Every time I have seen dark oil in my gauge sets sight glass its because the compressor either froze and overheated the oil or the compressor totally burned out...Im not sure if its a give that dark...
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    ruud/rheem are generally pretty quiet and they...

    ruud/rheem are generally pretty quiet and they use scroll compressors and have a pretty good reputation for reliable metering devices(imho) they are #2 to trane/american standart in my book...:eek:
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    When is the customer is always right actually...

    When is the customer is always right actually going to apply...:eek:
  41. Thread: help

    by Hrdworkingacguy
    Replies
    33
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    1,824

    I saw a Ducane fan coil at a general metals a few...

    I saw a Ducane fan coil at a general metals a few weeks ago that was like 13" tall laying horizontal...:eek:

    Being an "AC service tech" can mean a lot of different things to different...
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    hmm the green lantern = 95%, spiderman = 90% :eek:

    hmm the green lantern = 95%, spiderman = 90% :eek:
  43. Thread: Aflac

    by Hrdworkingacguy
    Replies
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    681

    I almost cut off my thumb and was off work for 6...

    I almost cut off my thumb and was off work for 6 1/2 months a few years ago...If I would have had aflac they would have paid out like $47,000 in compensated wages and a lump sum for the injury...as...
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    Good call...there is a reason Mcguyver wasn't an...

    Good call...there is a reason Mcguyver wasn't an HVAC tech...:eek:
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    demand defrost at least to trane is base on a...

    demand defrost at least to trane is base on a deltaT between the ambient thermistor and the coil temperature thermistor...As long as the DeltaT is in the right range it will go into defrost...Even if...
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    1,993

    Meant continuous run time...but like I said every...

    Meant continuous run time...but like I said every board is different...If the unit is on for 10min off for 10min and on for 10 minutes it won't check defrost...As a unit runs longer and longer it...
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    Generally its continuous but every board is...

    Generally its continuous but every board is different...:eek:
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    Two places I will never live, one is New York,...

    Two places I will never live, one is New York, and the other is Tennessee...:eek:
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    30/60/90 minutes of run time in the heat...

    30/60/90 minutes of run time in the heat mode(usually)...:eek:
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    mini splits are awesome...The compressors with...

    mini splits are awesome...The compressors with the inverters are really nice...Fujitsu has one I was looking at that goes from .75ton to 3.5ton...:eek:
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