We had a Daikin ductless system installed as a replacment for our old system that finally died. We have 4 total units inside the house, with 1 in each of the 3 upstairs bedrooms and a larger 18K BTU unit on the main floor. Its a small townhouse.
I have had a few weeks to observe how the units operate. Each upstairs unit gets each bedroom to temp and cycles off. Each of them will cycle back on and run briefly to keep the room at the temp they are set for. The main floor unit never cycles off. It runs constantly - even when it has reached the target temp.
Is this normal or could there be a problem with the main floor unit? I have also closed off all the old vents and filled in the floor register with insulation to reduce any potential air leakage.
The model number for the unit in question is CTXG18QVJUW. I have also turned of the unit for a couple hours and turned it back on - still same issue. I even had the HVAC installer come back and put in a WiFi module on this particular unit, so I could monitor it another way and when I use the app it says the temp is higher than what it is set for and the unit is still running.
I appreciate any and all input. Thank you!