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  1. Thank you for your reply! I agree with you about...

    Thank you for your reply! I agree with you about two 24 volt circuits. One 24v circuit is sent out on the R wire to the thermostat, then back to the logic. Another runs in those contactors, like C1,...
  2. where is the 24v input at the simplicity 1a board?

    hello, is anyone has a simplicity 1a board manual? where is the 24v input locate at the simplicity 1a board? thanks!
  3. i am sorry, i thought that was not a problem...

    i am sorry, i thought that was not a problem because i fixed them before i replaced the compressor, but txv still not woking.
  4. i have a question for the txv. does it 100% shut...

    i have a question for the txv. does it 100% shut off when the system offline or it allows a very little freon passing it?
  5. yes, i knew the leaking, i try to fix, but the...

    yes, i knew the leaking, i try to fix, but the txv head lost the charge. i fixed them yesterday with the first new compressor i installed.
  6. thanks for everyone! i just replaced another new...

    thanks for everyone! i just replaced another new compressor and it works fine now. i found the system leaking freon form the txv cap tube and external tube because of someone tied them together and...
  7. the original one is 2 pole 24v coil contactor

    the original one is 2 pole 24v coil contactor
  8. 204v on contactor LOAD side, this is a new 2 pole...

    204v on contactor LOAD side, this is a new 2 pole contactor i just replaced. each two compressor leg all show 1 ohm
  9. the ambient temp is around 85 F, roof temp is...

    the ambient temp is around 85 F, roof temp is over 100 F, this is a carrier package unit, model: 48hcla06a2a5a0a0a0, serial: 2813c77533
    this one carries suction accumulator. i don't know why keep it...
  10. charged 8 pounds from low side service valve with...

    charged 8 pounds from low side service valve with metering fitting, then balanced the both side at 250 psig. if it was the charge issue, i will try your way, thanks! at the first place, i feel the...
  11. 204 between the terminal. charged 8 pounds from...

    204 between the terminal. charged 8 pounds from low side service valve with metering fitting, then balanced the both side at 250 psig. at the first place, i feel the compressor bottom warm, cold on...
  12. yes, i replaced a new contactor there, it is 2...

    yes, i replaced a new contactor there, it is 2 pole cntactor. i also confirmed the line and load voltage, 204v between the each 2 line.
  13. if it was the charge issue, i will recover the 6...

    if it was the charge issue, i will recover the 6 pounds freon out of the system, then turn on the power to see whether or not the compressor coming to work.
  14. i heard pop sound when i pulled out the plug from...

    i heard pop sound when i pulled out the plug from there.
  15. how do you charge in this case? there only two...

    how do you charge in this case? there only two service valves all close to compressor.
  16. yes, i checked them, each two terminal show 204v....

    yes, i checked them, each two terminal show 204v. when the old one grounded, it burned the fuse. but this new one didn't trip the overload or a fuse or breaker, because no amps draw on each wire(L1,...
  17. OK, I got it, is that a problem?

    OK, I got it, is that a problem?
  18. L1 L2: 204V, L1 L3: 205V, L2 L3: 204V

    L1 L2: 204V, L1 L3: 205V, L2 L3: 204V
  19. it looks very clean, not be torched, everything...

    it looks very clean, not be torched, everything is new, 2013? how do you get it?
  20. it is a brand new compressor from johnstone.

    it is a brand new compressor from johnstone.
  21. no, i have a evaporator fittings connect on my...

    no, i have a evaporator fittings connect on my low side gauge.
  22. i checked each leg, not grounded, each two leg...

    i checked each leg, not grounded, each two leg show 1 ohm, thanks!
  23. thank you for your reply, not sure it is a...

    thank you for your reply, not sure it is a Advanced Copeland Scroll Temperature Protection compressor, model # ZP49K5E TF5 800, serial 13KD2175L.
  24. New Three phase Copeland scroll Compressor keep silent

    Hello, I just replace a new Three phase Copeland scroll Compressor for 6 years old grounded one. the system has total 13 pound r410a, i put 8 pound from the suction service valve and both pressure...
  25. i did few month ago, but i don't know why i am...

    i did few month ago, but i don't know why i am still a guest here.
  26. good point! thanks!

    good point! thanks!
  27. i got it, thank you for your reply!

    i got it, thank you for your reply!
  28. thank you for your time and your words. they...

    thank you for your time and your words. they explain why i found 20 F, 18 F or 30 F SST in different job site and keep maintain good temps there. But I think lower SST may form the ice easily on...
  29. from the doc, i found out "Select a nozzle for...

    from the doc, i found out "Select a nozzle for R22, 20˚F suction" that means in this case, i must have a 20 F is true. i got it, why don't you tell me the 20 f is correct saturated temp directly. i...
  30. yes, i have already read 40% today, i went to...

    yes, i have already read 40% today, i went to jobsite and found evaporator superheat is stay at 14 F(38-24), i replaced a new thermostat(A19BBC-2). minimum Differential 3 F. i get cut in at 39 F and...
  31. yes, it is. i need to check the superheat and...

    yes, it is. i need to check the superheat and make sure have solid liquid freon to txv, and i found the bulb was not insulated well. thanks!
  32. thank you for your reply! i service this store...

    thank you for your reply! i service this store one year ago. when i first time replaced the compressor stater reply on the roof for this work in cooler the new evaporator unit was there. i found the...
  33. thank you for your reply, liquid line is warm,...

    thank you for your reply, liquid line is warm, ambient is 95 F, head pressure is around 211 psig, i will try your way to check the sight glass, thanks!
  34. thank you for your information, the new...

    thank you for your information, the new evaporator unit is Trenton, the old condenser unit is master bilt. i will check the the evap superheat later, thanks!
  35. glad to hear you again! allow me to descript the...

    glad to hear you again! allow me to descript the detail:

    1. Why were you trying to charge to 30F saturated?
    follow the thumb, the return setting is 35 F, I should have 25 F coil saturated.
    ...
  36. what cause the lowside pressure stay in same even if charge 2 pound freon to it?

    i found walk in cooler undercharge because of freon leaking on the roof, lowside 20 F saturated R22, after i charged 2 pounds in, lowside pressure stay in same, highside rise a little. i try to raise...
  37. thank you, i got it! :cheers:

    thank you, i got it! :cheers:
  38. Randell DPM102-Refrigerated Three Door Pizza Prep Table problem!?

    what is the construction for Randell DPM102-Refrigerated Three Door Pizza Prep Table?

    i searched infor online for this unit, but it confuse me: how many evaporator coil it carries? i only found a...
  39. this is not from the trade books! thanks!

    this is not from the trade books! thanks!
  40. i did apply for pro membership, No respond...

    i did apply for pro membership, No respond :confused:
  41. :yes::yes::yes::yes:

    :yes::yes::yes::yes:
  42. very interesting! yes, you are correct!!! but, i...

    very interesting! yes, you are correct!!! but, i saw someone took out the head pressure control from walk in cooler(heat craft) today, because of higher ambient temps here?
  43. yes, someone replaced the higher hp/rpm condenser...

    yes, someone replaced the higher hp/rpm condenser motor to the unit, my question is the system will have higher than normal subcool/lower head pressure in low ambient temps if the system doesn't...
  44. thanks for your links, i believe it will work!

    thanks for your links, i believe it will work!
  45. thank you for your very detail questions for...

    thank you for your very detail questions for diagnosis!
  46. thank you for everyone's advise and your time, i...

    thank you for everyone's advise and your time, i really appreciate!!!
  47. in 120 F ambient, some AC still working even if...

    in 120 F ambient, some AC still working even if they are working hard, but some just stop working there, the owners have to open the doors and windows. i know someone may use the water spay to...
  48. look for the solution for keep head pressure down in 120 F ambient

    hello everyone, I am looking for the solution for keep head pressure down in 120 F ambient. for a right amount charged five years old AC, all i know to keep the head pressure down are:
    1. clean...
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    if the system keep running and suck the air from...

    if the system keep running and suck the air from outside, what will happen? the head pressure keep going up until trip the safety in the compressor? then leaking Freon, over and over again until no...
  50. Replies
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    [QUOTE=Snapperhead;25585664]If i come across a...

    [QUOTE=Snapperhead;25585664]If i come across a unit with a filthy condenser , the first thing I do is feel the tube bends , because a normal "not waxed" system will be warm from top to bottom , -...
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