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Type: Posts; User: iceage

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  1. Vapac humidifier LE40DA stuck on inializing

    Working on a Vapac LE40DA, replaced cylinder today(leaking from electrode), board was recently replaced by other contractor, unit is stuck on intializing. and i can not get past this issue. ...
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    Have had numerous Trane rtu's this winter with...

    Have had numerous Trane rtu's this winter with this issue, enough to cause tripped main breakers, have had to get heat gun out and dry electical.
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    2,123

    Got back to unit today, and traced all wireing. ...

    Got back to unit today, and traced all wireing. Traced wireing from fan delay and found coil on delay h1 and h2 were wired one to tr on gas valve and the other to tr-th(coil) on gas valve. moved...
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    2,123

    Stupid question but, if limit breaks transformers...

    Stupid question but, if limit breaks transformers primary 120, what powers fan?
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    2,123

    Unit is from 1975, one limit 3 terminals on it,...

    Unit is from 1975, one limit 3 terminals on it, no cracks on exchanger,pilot always stays lit. I have 120v at either side of limit when it opens, longer than usual amount of time before fan comes on...
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    . Yes pilot stays lit

    . Yes pilot stays lit
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    2,123

    Modine unit heater?

    Working on Modine u/h today m/n PA300A, with standing pilot. On a call for heat the unit fires but as soon as the fan kicks on the gas valve looses power and I loose flame. Any after fan shuts...
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    2,235

    It was a reliatel board, because I was able to...

    It was a reliatel board, because I was able to wire honeywell stat to board useing y,w,g etc and have control of rtu, not sure why the trane baystat would not work(tried two), wired exactly the same...
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    11
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    2,235

    Not sure what BAS is but harness was connected...

    Not sure what BAS is but harness was connected from comm board to j4 plug on rtrm and another harness from blower section was run to comm unit. I took off comm to rtrm harness and plugged in harness...
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    2,235

    A wireing harness on comm board was connected to...

    A wireing harness on comm board was connected to rtrm board, I removed harness and was able to control rtu from t-stat.
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    2,235

    A trane stat to begin with, It has a Baysen...

    A trane stat to begin with, It has a Baysen number I believe, not sure exactly what a Baysen stat is, but it was wired by others in the same fashion as a conventional stat, what I do know is that is...
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    2,235

    Trane rtu won't run from stat

    Working on a trane rtu YSCO60E3. I can jump out for heat at unit with test 1 test 2 but no control from stat It's a trane stat and I tried a Honeywell stat i had which I know works and same result. ...
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    1,130

    Well it turns out it is the ignition board at...

    Well it turns out it is the ignition board at fault. Had another 5 ton up top and tried that board and unit fired. Thanks again
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    1,130

    That's right 5 flashes. Unit was installed in...

    That's right 5 flashes. Unit was installed in summer by others and gas valve was off so I suspect it's never been run on heat, I will check ground and flame rod but I expect that wil be like new....
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    1,130

    Trane rtu flame w/o gas valve error

    Working on a trane ysc060e rtu I get an error flame w/o gas valve error as soon as I power unit. Ventor motor starts when unit powered and it goes straight to this error . Should there be a trial...
  16. Replies
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    1,572

    Heat exchanger changed in August, baffles included

    Heat exchanger changed in August, baffles included
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    1,572

    The pilot tube had been removed and cleaned. You...

    The pilot tube had been removed and cleaned. You can see pilot flame along bottom of tubing, but peeters out when it hits top tubing(u bend) and doesn't seem to hit sensor to open main gas, until...
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    1,572

    Yes. They were all missing ang found replacements

    Yes. They were all missing ang found replacements
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    1,572

    carrier burner lights sometimes

    Carrier 48dje064ca package unit with 3 burners. Gas pressures ok, pilot tubbing cleaned but, one burner (first stage) will only ignite when I hold hand over exhaust vent. Other burners run, same type...
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    Lennox GCS11 blower runs all the time

    Working on older Lennox RTU where the blower runs all the time when it should not, unit controlled by 20vdc stat. Struggled with this unit for a while today, came down to finding a cmc2 blower delay...
  21. Replies
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    3,131

    Changed cap ,motor hummed, gave blower spin to...

    Changed cap ,motor hummed, gave blower spin to get going, noisy as hell, berrings are shot, going to replace motor. Thanks all for help.
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    Okay thanks, and agrred I do need to get some...

    Okay thanks, and agrred I do need to get some more van stock.
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    3,131

    Capacitor check on furnace.

    I had looked at furnace with run cap for blower, unit was off on high limit. Did cap test and had 1.2 micro farads(cap rated for 5mfd) Cap wasnt bulged but my question is at 1.2 can I assume cap is...
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    1,590

    Thanks asjc, that information really helped. ...

    Thanks asjc, that information really helped.

    2sac, the stats are checked on pm's, but initially when on rooftop, units are jumped out ot test operation. Thanks all for your help.
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    1,590

    Jumping out Lennox gcs11 953 250

    Doing pm on rtu's. I came across 4 older Lennox rtu's gcs11. Not sure how to jump these out. From the looks of it dc voltage is run into a control panel and then over to another panel in comp...
  26. Replies
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    3,239

    Ended up going with the oem motor for this unit,...

    Ended up going with the oem motor for this unit, even though the information on how to wire the other motor has been excellent.
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    3,239

    Thanks all for the help, I've got a new duel cap...

    Thanks all for the help, I've got a new duel cap and going to change it out. caheiman30, when your boss wanted you to cap brn/white, you mean he wanted you to use duel cap, but I assume you used two...
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    3,239

    So if was the case blk and wht to load side of...

    So if was the case blk and wht to load side of contactor, brn to fan and brn/wht to common on duel cap, compressor wiring remains the same?
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    3,239

    New motor is a psc 208-230 v motor, labelled with...

    New motor is a psc 208-230 v motor, labelled with wht and blk line and brws for cap
  30. Replies
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    3,239

    Wiring Carrier split with duel run capacitor.

    Had a call this morning with a seized cond. fan motor on Carrier split. Unit has duel run cap for both herm and fan. Seized motor having 3 wires, blk to contactor, yellow to fan on cap and white to...
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    981

    No battery back up, stat powered by common thans...

    No battery back up, stat powered by common thans for the help:cheers:
  32. Replies
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    981

    Well i guess I screwed this one up, checked my...

    Well i guess I screwed this one up, checked my safeties and the high limit was open, for some odd reason the stat is wired in series with the safeties and when any open you lose power to stat.
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    981

    No power at t-stat, power on control board, but...

    No power at t-stat, power on control board, but no power at terminal strip that is on control board. By the way an error 33 is an limit circuit fault which indicates a limit or rollout open and if...
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    981

    No I didnt check all the limits for contintuity,...

    No I didnt check all the limits for contintuity, I suppose you guys may be right it is possible I replaced a board that was working. What I dont understand is that if the transformer sends 24v...
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    981

    Transformer 24V goes straight to board, If even...

    Transformer 24V goes straight to board, If even say a high limit was open would that break power to t-stat?
  36. Replies
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    Carrier 2-speed control board

    I had a call last week where I found a Carrier 8000 furnance with error code 33 Limit circuit fault. The Carrier t-stat had no display. I checked for power on terminal strip on board and no 24v on...
  37. Replies
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    771

    Existing system is running off supply temp, with...

    Existing system is running off supply temp, with A419 in supply duct in series with time clock, air switch , heat or cool switch, low ambient its apparently been like that for 15 years

    The zone...
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    3,694

    If I was you since you are just starting out, you...

    If I was you since you are just starting out, you should get at least three ropes for pulling up filter boxes, take note if old filters not properly secured and may blow off roof top on you, take...
  39. Replies
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    771

    With remote sensor off commercial t-stat, can you...

    With remote sensor off commercial t-stat, can you bypass temp at t-stat location and run system off remote bulb location In this case supply ducting,
    System has return ducting and relief dampers...
  40. Replies
    12
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    771

    Hardwater the dampers are all controlled by...

    Hardwater the dampers are all controlled by individual stats that open dampers in each zone on a call for cooling. As for the carbon footprint thing I would say I was looking for a stat that would...
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    771

    T-Stat for zone control

    I am changing out an old lennox RTU next week. The existing system is controlled by actuators closing off flow to offices on cooling setpoint on main floor and second. The system is controlled by...
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    Good points thanks for the reply brett

    Good points thanks for the reply brett
  43. Replies
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    1,660

    ICP Nomenclature

    Looking at some ICP unit heaters, cannot find BTU input, output(label torn). I was able to get M# UHA250NS Can i safely assume the 250 refers to btu;s 250,000. Cracked heat exchangers and I will...
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    509

    u/h's sharing same venting

    Came across a Lennox U/H with ventor motor sharing common vent with ICP U/H with natural draft. Besides code, why is this a wrong situation?
  45. Thread: cogged belts

    by iceage
    Replies
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    1,299

    cogged belts

    Do cogged belts serve any special purpose are can they be replaced by normal ones ex/ ax45 to a45, stupid question maybe but, I have new maintenance, some units have cogged belts others not and they...
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    796

    Liebert stat replacement

    Working on a liebert m/n mme-036ephi placed in a ceiling with a water cooled condenser. The stat is shot. My question is, can I use a regular stat like a honeywell 6000 for example and connect it...
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    1,422

    Logic tells me I was the smartest guy on the roof...

    Logic tells me I was the smartest guy on the roof top at the time but I am the only one who came up the hatch. Found 3 amp circit breaker open perhaps what threw me that the reset wasnt tripped. ...
  48. Thread: Pneumatics

    by iceage
    Replies
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    770

    Thanks btuhack

    Thanks btuhack
  49. Replies
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    yeah r to ground from terminal strip on board has...

    yeah r to ground from terminal strip on board has 0 volts
  50. Thread: Pneumatics

    by iceage
    Replies
    12
    Views
    770

    Pneumatics

    Any good sources for basic info on honeywell pneumatic systems or general info on pneumatics in general? I inherited a job which 6 zones running with a boiler and air handler has been problematic...
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