Truma blown air not blowing at front vents

[Motörhead Fun]

Hymer Exsis-i 562 2012 model.

When heating is on, it is not blowing at vents near front on driver's (LHD) side. Front vent on other side is fine. I have tried blocking all other vents and it still doesn't blow through these vents. Any ideas? It has been fine in the past.

Thanks

 

[dazandandrea]

More than likely the hose has become detached from the vent or maybe near the heater.
Have you been rummaging in any areas where the hoses run?

 

[Motörhead Fun]

Thanks for advice. After unscerwing cupboad bottoms looking for a leak/spilt it was evetually the pipe had detached on the boiler! No wonder the garage had been so warm.........All fixed and working now