garytreez
19-01-2011, 08:43 PM
Hi all,
Indoor - MSZ A 12YV
OUTDOOR -MUZ A12YV
I was called to this unit as it was running fan only and not heating or cooling. Tried a reset...changed ALL pcb`s...but still no joy. This is the unit that has power to the indoor unit first, then to the outdoor unit. When a arrived, the outdoor plastic terminal and pipe cover was on the floor. Have been back and replaced fan motor and checked compressor but its still tripping. Checked interconnecting wire and noticed that its been installed with the live into the comms 12v :eek:. I have changed it and it still trips unless i disconnect the neutral from the "outdoor terminal block to the power pcb"
What damage can be done & what can i do.....try a new power pcb ??? please help...
Indoor - MSZ A 12YV
OUTDOOR -MUZ A12YV
I was called to this unit as it was running fan only and not heating or cooling. Tried a reset...changed ALL pcb`s...but still no joy. This is the unit that has power to the indoor unit first, then to the outdoor unit. When a arrived, the outdoor plastic terminal and pipe cover was on the floor. Have been back and replaced fan motor and checked compressor but its still tripping. Checked interconnecting wire and noticed that its been installed with the live into the comms 12v :eek:. I have changed it and it still trips unless i disconnect the neutral from the "outdoor terminal block to the power pcb"
What damage can be done & what can i do.....try a new power pcb ??? please help...