Trumatic air not flowing to bathroom

[Langloan]

Auto-trail Bathroom not heating - when I turn on my Trumatic heater and set the fan to auto the hot air pumps out of all vents perfectly but not the bathroom one.

Logically a blockage but how do I check? Any ideas why all vents but this one work very well?

 

[Clivefog]

Some old style curtain wire, the plastic covered spring type, gently feed it in rotate it to get round bends. Suspect it may be a crushed hose or even disconnected joint somewhere just need to trace it back.

 

[Wissel]

My best guess would be the pipe has disconnected from the bathroom vent.

The connections are not great. If you can get to the back of it and it is disconnected, just reconnect and add good duct tape to the join.

It could also be disconnected at the heater (less likely as the join here is better), or a T piece somewhere.

 

[DuxDeluxe]

Also try throttling the other vents down as the blown air takes the path of least resistance. Had this issue on both the Autosleeper and the Pilote. Throttle the lounge vents back and voilà….. hot air in the bathroom. Brilliant drying room for dinghy sailing gear…..

 

[IRHP]

I have a similar issue, it's at the end of the line and although air comes out it's a lot colder than the outputs at the other vents. I think there's just too many of them and the one for the bathroom goes external under the motorhome for about 4 feet. Lagging it helped a bit. I think I've got 10 outlets in total. I takes a bit of fiddling to get them all balanced just right.

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[two]

It's not good practice to choke the other exits back, as the boiler could overheat (so Truma once told me).
Check that the pipes are connected (did it ever work properly?) and not crushed or blocked. I once found a 'spare' control wheel inside one of my pipes! See if you can reduce the number of corners along its route, and add insulation if it's under floor.
You're unlucky. All the blown air systems in motorhomes that I've owned have fed the bathroom really well (being so close to the boiler). The bathroom is the one place where you strip off (even if only temporarily, so it's an important place to keep warm.
State which model of Autotrail and someone can advise how well theirs works.

Another thought: You must use gas. Electricity only is pathetic at heating the van (but fine for water).