Brivis Ducted Heater/Air Condition

Can the air get from that zone back to the return? (You do know where the return is fitted, don't you?) Despite having more than one zone where cool air is sent, all A/Cs I've ever seen have only single return. You might need to put a vent panel into the door that divides the two zones.

Clifford Heath.

Clifford, Thank you for your reply. Yes air does go through the return, initially, but then as there is a drop in air coming out of the ducts there is also hardly any air flowing to the return. I have now noticed that it is also happening with the heater the same zone initially works and then after around 15 minutes it hardly works.

Perhaps the return air duct is crushed and collapses under the vacuum?

We recently had a problem with one of our split system units where it would hardly produce any cooling or heating. Upon inspection we noticed one of the copper pipes connecting the outdoor to the indoor unit had ice on it (where it exits the outdoor unit). The problem in this case was low refrigerant caused by a small leak in one of the fittings. The leak was fixed, the refrigerant replaced and it now operates as it should both heating and cooling (and no ice on the pipes). Maybe your iced-up pipe is a sign of low refrigerant?

Andy

Does not make sense in this case because one of the zones is working. If the refrigerant was low, which is common to both zones, none of the zones were working.

Richard