Why does the split unit blow hot air in air conditioner mode, when switched on with the remote control.

SOURCE: fan coil unit won't cool or heat in room1 while room2 runs well

could be undercharged, or overcharged, or wires weren't put back on valves in unit.

SOURCE: can not switch on home air condition with remote and no have manual switch

If you open the front panel of the indoor unit (it opens upwards) near the receiver there is a samll on/off push button (switch). If the indoor does run but still cannot be controlled by the remote, there is a reciever board problem. you need to call their servicemen.

SOURCE: Fan Coil Unit is Cycling on and off. But the room is still hot.

Check electrical connection at the T'stat and the indoor blower . Sounds like a loose connection.

SOURCE: Daikin Inverter Split system turns

Hi,
There are quite a few things that can cause the symptom you are describing there...
The most common would be for you to have a refrigerant leak in the system that is causing the outdoor unit not to run, but the indoor unit still will run...

Often there will be a diagnostic LED on the outdoor unit that will help with troubleshooting...

Of course also a good thing to try is to remove all power to the unit indoor and outdoor...and then reapply the power and see what happens...this may correct the fault...

here is a tip that also will give you some things to check....

Feel free to comment back with any more questions...

Air Conditioner Trouble - Review the Possibilities

heatman101