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Ditto on the loctite 554, doesn't come apart easily but it works great.

We have a bingo, to bad it's bought and paid for as a permanent fixture just the way it sits.

I wish, customer has 2 boilers on Site both in trailers for 5 years now, this trailer has feed water pumps and a deaerator to boot.

Time for my annual opening of this little tea kettle again... any volunteers??

It seems to me that you have liquid refrigerant flowing through your equalizing line which is giving your TX valve a false evaporator pressure. I'd start with a new TX valve, JMHO.

Is this what you're looking for??

Missing attachment.

It's been a while but I think I fused the primary with a pair of 1 amp time delay fuses, this unit was a 600 volt model.

I also fused that transformer as there is no overcurrent protection from factory.

Here you go, kit part numbers are included. I had to replace every board and both the high voltage and control wiring harnesses on the last one I did. Trane however came good for all of the parts...

Been there done that, I assume your combustion motor is fried as well. Do you have the most recent service bulletin for that scenario??

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See attached

The High fire proving switch is usually internal to your firing rate mod motor. Is the burner driving to high fire for the purge but not making the end switch??

Been there, done that, what a severe PITA. Added some fuses to the primary of that transformer to boot, kind of wonder why it wasn't fused in the first place.

:.02:

Most dual compressor systems I have seen use 1 pressure control (sometimes 2 for a failsafe) with a few control relays that sequence alternately between the 2 compressors. This lets each compressor...

The stem packings for Honeywell valves has not changed in years, the size you need is always based on the stem diameter (3/8" in your case). I never buy rebuild kits, I stock all 3 sizes of teflon...

Some manufacturers stage them and some don't, it's entirely up to the OEM as running 1 alone may cause issues if the piping system was designed for running both. Many manufacturers also recommend...

Not that it matters that much but what type of compressors?? Which compressor has the visible oil level, the running compressor or the idle one or are they both running all the time??

I am certainly not anti oil separator. I feel that they just need to used for the right reasons. Installing an oil separator on a system with oil return issues is not going to correct the oil return...

It sounds to me like this system was intended run 100% of the time regardless of load as it is for dehumidification. The compressor issues he has experienced needs to be spelled out a little better...

Now that I agree with.

Although the OP doesn't state it I have assumed that the hot gas and liquid injection is being done locally at the condenser and only has a liquid and suction line at the evaporator as is done by...

I agree whole heartedly that you will stop 98% or more of the oil going into circulation, that leaves 1-2% still getting into circulation. On a system running light load and low velocities the oil...

Although a very effective means of significantly reducing the amount of oil that gets to the evaporator there will still be small percentage that gets past the separator. Adding an oil separator to a...