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  1. Replies
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    420

    your theory are excellent, my problem is bad...

    your theory are excellent, my problem is bad connection at harness connector to hi limit.
    with clean 24V it sparking perfect.

    many thanks Mr.
  2. Replies
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    420

    Did installed ground wire from electrode screw to...

    Did installed ground wire from electrode screw to clean solid ground .
    No spark at all. I can see the electrode if it does sparking.
  3. Replies
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    420

    No common just ground terminal. Yes travel...

    No common just ground terminal.
    Yes travel through series of safety and ending powered the module.
    Did jump the rollout switch and pressure switch but no effect.
    I'll try it with clean 24v...
  4. Replies
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    420

    Igniter will not spark issue Lennox LGA120

    LENNOX RTU M #LGA120SH1J S # 5697H03406

    having issue with igniter won't spark. LED BLINK 6 HARWARE FAULT DETECTED.
    DIRECT SPARK IGNITER
    Ignition module terminal MV/POWER/FS/GROUND.
    ...
  5. Replies
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    921

    [QUOTE=BBeerme;18929931]Can you get tonnage off...

    [QUOTE=BBeerme;18929931]Can you get tonnage off of the TEV's?

    measure the orifice. That'll give you a pretty big clue to the tonnage.
    no more Data on the TXV head. measuring orifice is way to go...
  6. Replies
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    921

    its not the same. I think an older 240RA series. ...

    its not the same. I think an older 240RA series. don't understand the numbering valve body R0404 1 240RA-H9 represent.
    liquid pipe 7/8. my guessing is about 25-50 ton capacity. an older carrier...
  7. Replies
    13
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    921

    took it apart and there is damaged valve seat.

    took it apart and there is damaged valve seat.
  8. Replies
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    921

    solenoid valve replacement help

    could not find specs on this solenoid valve. this number from valve body R0404 1 240RA-H9.
    looking for tonnage capacity.
    leaky solenoid need replacement.

    coil specs Emerson R0607 AMG 120v 17...
  9. 06D series compressor, some have solenoid...

    06D series compressor, some have solenoid capacity control and some has pressure actuated capacity control.
    its hard to tell if the tone change if all other compressors runs at same time.
    amperage...
  10. how to check pressure actuated unloader on Carlyle compressors.

    never work on pressure actuated Unloader before, how it work and how to check if its loading or unloading!
  11. Thread: Ypal schematics

    by cfe
    Replies
    4
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    349

    Hi YORKAPPRENTICE, having trouble with this...

    Hi YORKAPPRENTICE,

    having trouble with this unit have no respond to keypad. their is password on the panel 9725 but I don't know how to enter it.

    display showing
    Version A09
    Address 32...
  12. Replies
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    699

    Hi Pete Mccarthy, I have 9725 written on the...

    Hi Pete Mccarthy,

    I have 9725 written on the panel but I don't know which button to enter the password. I have tried all button none is responding.

    display shown
    Version A09
    Address ...
  13. Replies
    15
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    1,197

    27 volt secondary transformer, 24 volt back to...

    27 volt secondary transformer, 24 volt back to rooftop with jumper at thermostat.
    even 17 Volt with Nest , on call for cool did not witness any chatter at all and could last more than a month until...
  14. Replies
    15
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    1,197

    there is dispute between the landlord ant the...

    there is dispute between the landlord ant the tenant regarding who's at fault and bill to.

    need solid prove that the Nest thermostat indeed is the problem.
    tenant stated that they installed Nest...
  15. Replies
    15
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    1,197

    any other Nest thermostat problem reported?

    an office just installed Nest thermostat them self 3 months ago and its took out the compressor Contactor (welded). changed out the contactor 2 months ago.
    today back with same problem plus...
  16. Replies
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    1,073

    it was set by Hussmann local distributor who have...

    it was set by Hussmann local distributor who have the original contract with the store.
    we are not allowed to change any setting. sort of sub contractor for this store.

    was told that 10 ppm is...
  17. Replies
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    1,073

    how big is 10 ppm leak? can not find the leak

    leak detections system at supermarket set at 10 ppm leak, 100 ppm spill, 300 ppm evacuate. R-22 system.

    inside the walk in cooler where one of the zone air sample filter located pick-up 12 ppm...
  18. I did and the problem is leaking at Hydrophobic...

    I did and the problem is leaking at Hydrophobic filter. replaced the filter and seems runs good.
  19. thanks for the link, the model is different from...

    thanks for the link, the model is different from the one i'm dealing with HGM-MZ . are they pretty much the same way of diagnostic?
  20. feeling the suction directly from the pump it...

    feeling the suction directly from the pump it sucking good. don't remember the actual psia reading in diagnostic screen.
    system temporary disabled.
  21. BACHARACH HGM-MZ HALOGEN GAS MONITOR NO FLOW PROBLEM !!!

    refrigerant leak monitoring systems with 16 zone keeps going into alarm every 15 min.

    alarm fault code 0800 no flow zones on multiple zones. it will cleared itself next sampling cycle but...
  22. No, I'm talking about 24 V fuse on control board....

    No, I'm talking about 24 V fuse on control board. the unit it self 575 Volt with 40 amp breaker.

    I would install resettable fuse till found the problem.
  23. Replies
    9
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    1,226

    recently have similar problem, Eng-A MUA shut...

    recently have similar problem, Eng-A MUA shut down intermittent. customer reset it by on/off breaker and back to normal for about 30 min and shut down again.
    flame failure error, clean the flame...
  24. had the same problem with carrier rooftop unit,...

    had the same problem with carrier rooftop unit, found shorted 24 volt control wire to economizer wounded to chassis that intermittent blowing 5 amp fuse. had to move the top panel to see it.
  25. Replies
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    7,549

    JP, what temp expected for a good separator?...

    JP, what temp expected for a good separator? should it be slightly lower than discharge temp?
  26. Replies
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    586

    Glad your on board, have you work on engineered...

    Glad your on board,
    have you work on engineered air model#FWB-182/DJ-60-CO I think is made in your City, Edmonton.

    421151421161421151421161

    did maintenance few days ago but have no idea how...
  27. Thanks for all inputs, Leak check entire system,...

    Thanks for all inputs,
    Leak check entire system, electronic leak detector doesn't pickup anything. No oil residue present.

    If this is original charge then it survived last winter. If there is...
  28. I thought 80% is total charged, mean nothing in...

    I thought 80% is total charged, mean nothing in condenser and liquid line.

    some condensing unit i have seen with LAC have label that add certain amount of lbs after clear sight glass.

    in this...
  29. it could go down to 0 - 10* F in winter the...

    it could go down to 0 - 10* F in winter

    the cooler fairly new, installed in 2011 by other company.
  30. is sight glass have to be clear of bubble if unit maintaining temp?

    keeprite condenser M# KEZA060M8-HT3B-N264 For 28' dairy cooler. it maintaining temp 35* but sight glass full of bubble.
    after pump down torched the receiver tank, liq is about 5 inch high from the...
  31. Replies
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    recently replaced 2 copeland scroll out of lennox...

    recently replaced 2 copeland scroll out of lennox rtus, about 6 years old and compressor considered failed prematurely.

    one of them due to big leak at condenser u-bend pipe burst .burnt compressor...
  32. Replies
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    salesman as the name implied just makes deal. all...

    salesman as the name implied just makes deal. all they do is to make other company looks bad by pointing out any little things they can get and bring it to customer attention and makes them the...
  33. Replies
    18
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    2,872

    haven't check my pressure after pulled down. the...

    haven't check my pressure after pulled down. the reading is base on 27* box.it may have around 20 # back pressure now.
    so far the owner ok with it, all they put inside is just pita breads.
    will...
  34. Replies
    10
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    757

    module build in the motor. yes constant power...

    module build in the motor. yes constant power present.

    at few local supplier, no one has 1800 rpm motor and never know it. most carry only 1550 rpm non ECM.

    I guess the speed is controlled by...
  35. Replies
    10
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    757

    ECM evap fan for WIF problem

    Norlake walk in freezer one of the evap fans changing speed frequently from stop, slow to full speed and stop again, causing freezer evap icing up. M #CPF150DC-A/12051696

    1800 rpm, 208-230 volt,...
  36. Replies
    18
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    2,872

    my sight glass is clear but my head pressure at...

    my sight glass is clear but my head pressure at 95* I would expect around 330# .
    currently at 280#
    door gasket is also an issue here They need replacement but it's been like that for years and...
  37. Replies
    18
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    2,872

    [QUOTE=VTP99;16434021] it's soldered sporlan...

    it's soldered sporlan txv. If there is strainer that can be removed and check it will noticeable Just looking at it. Am I correct?

    Compressor has CPR. Compressor Amp draw close to spec.

    Just...
  38. Replies
    18
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    2,872

    lo side 30 psi. = 0 *f according to the store...

    lo side 30 psi. = 0 *f
    according to the store since a week ago freezer range temp range 5-15 F not maintaining below set point -10*.
    I think txv may be restricted. just couple quarter turn I can...
  39. Replies
    4
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    650

    I have seen many carrier without liquid line port...

    I have seen many carrier without liquid line port just discharge port.I consider it the same pressure although liquid port will read lower pressure if provided.
    many new lennox RTu come with 2...
  40. Replies
    18
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    2,872

    will slightly under charge change the Superheat ?...

    will slightly under charge change the Superheat ?

    I have walk-in freezer that head pressure 50 psi below normal at 280# 95*amb and my Superheat at evaporator is 26*F clear sight glass.404a system....
  41. Replies
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    2,483

    extended run , if lowest box temp +20F never...

    extended run , if lowest box temp +20F never satisfied stat. that's would worry me and so is the customer not the ice.
    could be under size, hi load, infiltrations assume fans is good coil clear.
    i...
  42. i will look for that, all refrigeration is...

    i will look for that,
    all refrigeration is water cooled, unit serve kitchen only,the kitchen around 1200 sqf.
    closed some of vent that not need much cool air like kitchen hallway. wide open where...
  43. this kitchen has no makeup air, economizer is at...

    this kitchen has no makeup air, economizer is at min position 20%.
    t-stat is at 72* all time. store open 24hr. both condenser fan at right direction.
    no fire damper. supply air flow good....
  44. York Rtu for kitchen not keeping up previously working good issue?

    YORK D2CG120N20025JSB S#NFM13044---- MISSING #.

    this is at Mcdonalds kitchen the lowest its get is 77*F. at 85* out door amb temp.
    thermostat in the office with remote sensor in the kitchen. all...
  45. Replies
    21
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    1,671

    did not check the wheel, but when i opened panel...

    did not check the wheel, but when i opened panel to clean the evap coil i can feel great air movement straight through my face. and at the Diffusers I got good air coming out of it.

    PENDERWAY, I...
  46. Replies
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    1,671

    I guest humidity is 60% outdoor and indoor. This...

    I guest humidity is 60% outdoor and indoor. This unit serving left office reception area. Right reception area and 2 other back room area working great
    They all have return grill in hall way. So...
  47. Replies
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    1,671

    Did not check the wetbulb temp. Not familiar with...

    Did not check the wetbulb temp. Not familiar with that method.
    How do you determined if fan speed is too hi knowing the wetbulb?
  48. Replies
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    1,671

    Pulled charge and weight in as spec. Not remember...

    Pulled charge and weight in as spec. Not remember the exact amount. So I think under or over charge is not the issues.
  49. Replies
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    1,671

    Subcooling 13*

    Subcooling 13*
  50. Replies
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    1,671

    no fan cycling, I would like to see higher...

    no fan cycling, I would like to see higher suction just don't see what i am missing
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