Came across this RTU that wasn't cooling. It had tripped the breaker and would not reset for some reason.
Just a little short
1 reading
tbone2u
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1,113 Posts
Good point! So...how many of us wear those safety glasses and gloves sitting on our dashboards...?
I think ya better look at that again, its toast.
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61,972 Posts
Customer is the boss here... Personally, I would carefully check out the entire unit... then recommend for either repair or replace. If the comps, motors, etc were in good shape, and the magic smoke was only let out of the control box, then I probably would recommend repair. It takes a LOT of service work to pay for a new unit...
The reason we would condemn it is a simple little thing called a UL Listing. You are allowed to replace componants with simular pieces, but a total gut and re-engineer the controls and you just removed the UL Listing from the unit. Something goes terribly wrong, causes a fire, and you can be on the hook for damages.
Ucp board, heating ignition control, phase monitor, transformers, contactors, combustion blower assembly, phase monitor, unit breakers, TB3 terminal strip, capacitor, crankcase heater temp switch, conventional stat board, fuses, gobs of wire, connectors and time-------- I would recommend replacing as well.
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30 Posts
i have rewired one of these in the past and as long as you get all the parts and wiring harnesses all in one shot and a GOOD wireing schematic for the unit its really not that bad. i did mine in under 6 hours.
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298 Posts
so, the commercials are all wrong.....
you CAN stop a Trane.
you CAN stop a Trane.
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1,189 Posts
Seriously? Some of you would spend your customers money on repairing that thing? Can't see it. Age of unit, liability, future problems with unit and customer blames problems resulting from your rewire, R-22 phase out..........I wouldnt do it. To me a no brainer.........Replace!!
I saw the same thing on the same unit. Thank god they did not authorize the price when I was there. Some one else from our co. Did fix it. A few months later the 5 ton circuit of 1t tons has low suction fairly. Normal head press. I changed the dryer, same after that. I think some pistons are clogged.
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3,799 Posts
I have rewired 6 of these, although I must say this one is pretty bad. You can get the complete harness from Trane as long as you give them the fiy numbers off the unit for all the options installed on it. It's generally caused by the combustion motor going bad and inturn causing the transformer to short. There is no fused protection on that transformer.
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445 Posts
Back when I was in the Air Force, I had to rebuild the control panel from a 30 ton DX set up. The compressor blew out a couple of the terminals, and fried all the wiring. Fun part was doing it all up with no schematic and dealing with a part start winding on the compressor.
And that was after getting the compressor there from one side of the base to the other with only a forklift. The compressor was bigger than the bed of the trucks we had.
And that was after getting the compressor there from one side of the base to the other with only a forklift. The compressor was bigger than the bed of the trucks we had.
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