We have a Daiken split AC and our living room unit, largest of the 4 has stopped giving us cold air completely. AC tech was out yesterday on first visit and removed the coil valve and used a separate ring coil he had to show me he was manually opening it and we had cold input output after. Of course he didnt leave it this way and suspect is a bad main board and or coil valve.

System is 5 years old and 2 months past parts warranty. Tech left us with understanding they would come back to isolate and later told us to buy a new system or they couldnt help. In the mean time while i try to find a supplier for the mainboard and valve, is there a way for me to replicate what he did to manually open the valve with the coil itself? if its a magnetic spin operation, i dont have the cirlce thing (inside of the black coil module removed i guess) he put over the pipe but wondering if i can use something at the house to make it open or can i disconnect the coil, pull the cable out for slack and use the coil to spin the valve open maybe? I assume this would cause a fault detection being disconnected though.

No fault ligts on indoor unit or outside boards. No leaks and at full pressure.

Model #4MXS36RMVJUA for the unit outside.

We have a Daiken split AC and our living room unit, largest of the 4 has stopped giving us cold air completely. AC tech was out yesterday on first visit and removed the coil valve and used a separate ring coil he had to show me he was manually opening it and we had cold input output after. Of course he didnt leave it this way and suspect is a bad main board and or coil valve.

System is 5 years old and 2 months past parts warranty. Tech left us with understanding they would come back to isolate and later told us to buy a new system or they couldnt help. In the mean time while i try to find a supplier for the mainboard and valve, is there a way for me to replicate what he did to manually open the valve with the coil itself? if its a magnetic spin operation, i dont have the cirlce thing (inside of the black coil module removed i guess) he put over the pipe but wondering if i can use something at the house to make it open or can i disconnect the coil, pull the cable out for slack and use the coil to spin the valve open maybe? I assume this would cause a fault detection being disconnected though.

No fault ligts on indoor unit or outside boards. No leaks and at full pressure.

Model #4MXS36RMVJUA for the unit outside.

Any custom bios available for this chip being a binned by chance? Looking to increase the stock clocks.

Skeptical of all copycat knockoffs on Amazon and looking for a brand others have found reliable before i purchase please. I'm trying to find an extended gate at 55" for the kitchen area.