Hi all,i have not had much time to look at the fault yet,but after a generator test 2x mitsubishi
split ceiling fan coil units will not run.
There are 4x split system 2 in each room with a single controller in each room.The controllers display no fault code but will not switch on at the stop/start button. Cannot perform a test run, but if outdoor units are powerd off wait 1min and powered back on the green light on the controller is blinking green while it trys to look whats connected to it,but when this stops its back to the same and will not switch on.Same problems in both rooms.Powered off indoors at spurs,no difference.
3-ph supply at outdoor units ok 240v at terminals 1+2 ok 2+3 variable voltage.12v dc at controller,
power to indoor boards.Thats as far as i`ve got,can anyone help if they have had this problem before.
regards doorswing.