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  1. Replies
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    331

    These come apart very easily. Very clever design...

    These come apart very easily. Very clever design that takes two or three times to figure them out though.
  2. Thread: Package Unit

    by timjimbob
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    198

    What part are you changing?

    What part are you changing?
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    790

    I think acid. Check for it.

    I think acid. Check for it.
  4. First verify if equipment is dropping temperature...

    First verify if equipment is dropping temperature 15 to 20 degrees AT EQUIPMENT. If so, I suggest bad ductwork. Sometime AC equipmebnt runs fine when tech is there, but system fails because of a...
  5. I haven't seen an evaporator, in the last ten...

    I haven't seen an evaporator, in the last ten years, that cannot handle higher 410a pressures. If it is older then that, you should be putting in a new coil.
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    173

    Data communications. Can be anything. AC ok.

    Data communications. Can be anything. AC ok.
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    326

    Check circuit size first. This will dictate the...

    Check circuit size first. This will dictate the heat strip size of existing system. If new wire is needed, can be a deal breaker.

    Unlike AC, Oversize resistance heating does not affect...
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    391

    typically not fastened to pad. Being plastic...

    typically not fastened to pad. Being plastic pad, I dont know of an advantage of bolting it down. But concrete would deter theft in crime-y neighborhood.

    Pad can be replaced without moving CU or...
  9. I believe Rheem dry charge, with copeland comp,...

    I believe Rheem dry charge, with copeland comp, R22 units now are using POE oil. How is this change the change out. If mineral oil needs to be flushed out, then R22 dry charge has no advantage then...
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    Leaking where? There are caps on these valve...

    Leaking where? There are caps on these valve that prevent seal leaks. Stem may be leaking, but the cap is a secondary defense against leaking. Use teflon tape or new gasket.

    I can't picture were...
  11. Replies
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    Author wrote he removed all 24volts to board. ...

    Author wrote he removed all 24volts to board. The relay, I believe, cannot close the blower relay without 24 volts. So that would leave out the safety string as the culprit. I am not looking at...
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    655

    Now, I think it is bad bus bar

    Now, I think it is bad bus bar
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    523

    pressurized building zones is also a way to...

    pressurized building zones is also a way to control smoke within the building. Say there is a fire on Floor 13, floors 12 and 14 will be pressurized to "corral" the smoke. Very much a part of a...
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    I once repaired a blast freezer, ignoring the...

    I once repaired a blast freezer, ignoring the rattle of copper after repair. Rubbed a hole in no time and ruined many man/hour spent on frozen ice cream cakes during their holiday rush.

    OOps!
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    What caused the oil so bad? R11 works wonders on...

    What caused the oil so bad?
    R11 works wonders on circuit. R11 Equivelents now available.

    Suck oil out of compressor and replace. Repeat?
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    495

    I think melted disconnect was not a result of...

    I think melted disconnect was not a result of power outage. Could cause compressor failure. Can't be sure of furnace though.
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    655

    Did tech try to stall compressor by rapaid...

    Did tech try to stall compressor by rapaid restart? Usually, breakers that trip 6 hours apart are a result of overheating breaker or local bus bar hot spot. Typically, a bad compressor will trip...
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    1,777

    This is a stretch, but I see alot of reverse...

    This is a stretch, but I see alot of reverse polarity.

    White is really hot leg. Mostly older houses. grounded motor would do that in that situation.
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    1,777

    i don't see how a bad board would cause the motor...

    i don't see how a bad board would cause the motor to spin slowly for very long. I assume you verified this wasn't a low speed setting. If voltage to motor is low and line voltage is 120 volts, that...
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    I cannot recommended the Andover. This system is...

    I cannot recommended the Andover. This system is hard to understand, non intuitive, and requires company people make changes. AC status is stated as 1 or zero. Oh I get it, but why not On or Off....
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    fresh air is required on nwer systems, because of...

    fresh air is required on nwer systems, because of energy code. New houses are tight and CO2 builds up unless you "open a window" That is what the damper does. It is on a timer that opens the damper...
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    Amazing that it restarts pretty easily.

    Amazing that it restarts pretty easily.
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    548

    Compressor does have run cap

    Came accross a very old Singer comfortmaker AC yesterday. Everything was butchered on this.

    Found wire connection on comp cap burnt off. Could not find matching burnt wire, The more I studied...
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    ironically,it works the best where water is most...

    ironically,it works the best where water is most precious.

    You cannot economicaaly remove the minerals.
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    conceptually good idea. Uses the power of...

    conceptually good idea. Uses the power of "change of latent heat" to lower the temperature, just like a skyscraoper cooling tower does.

    Problem is all the minerals that are in the water. This...
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