I need help understanding LGB/MTS pulse smoke

stevedenver

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So I’m new to digital and recently bought an updated Marklin Central station three. I have 7MFX and 2MFX plus LGB locomotives.

I wrote an earlier thread about my green Saxon Meyer (the version that came in the fancy wooden box).

I have a brand new 20483 0-10-0 fichtelburg.

On the bench, each locomotive has it smoke unit operating “properly” smoking while standing still, and chuffs when throttle is applied.

However, in using my MTS unit outside, which may or may not be relevant, the locomotives operate properly, until they don’t. Both of these locomotive seem to arbitrarily switch from pulse to smoke to a trickle of smoke. I also noticed in the 0-10–0, that for whatever reason it will stop producing smoke from the stack and start producing smoke from the cylinders.

I have no idea what’s going on. It is safe to assume that both locomotives are properly coded, i.e. factory, (i bought them new),and, I have observed them operating properly, but, they seem to arbitrarily stop the synchronized smoke and go to a stream and a modest one at that FWIW, I have also noticed that if I shut the system down for a period and then restart it the smoke units will then again operate properly. I have also noticed that if I run a locomotive at high throttle say 15+ bolts, abruptly bring it to a halt, and reverse, sometimes the pulse smoke unit starts again. Or, sometimes, the smoke will stop, say at 9-12 volts, and if i run the throttle full, 18v+ the smoke will start again. Sometimes.‍

Other times, after “normal pulse operation“, the smoke will simply stop.
Sometimes, I can hear the pulse fan operating, but I get no smoke and there is adequate smoke fluid.

I am assuming that this is some sort of issue with the board or power, but I have been unable to decipher exactly what’s going on. Perhaps some thermal protection??

FWIW, I am using the correct Marklin switched power pack with the central 3. Everything is properly connected.

I have one locomotive, the Saxon, 1K, Alexander Thiemer, and its pulse smoke operates reliably.

Any insights or actual knowledge of what’s going on would be appreciated. I find it’s irksome because I like smoke, but not a real issue.
 
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