Z
zimmi
I have been asked to repair a faulty roof blind. I have checked mains to the transformer, DC from the transformer to the switch and DC from the switch to the motor. The switch meters correctly when disconnected, ie. when pressed one way the contacts in a line become short and the other way shorts the contacts diagonally. The switch has a non-locked position and a locked position for each direction.
However, when everything is connected and the switch is made in which ever direction nothing happens. When the switch is 'rocked' from the 'off' position to the, lets say, 'up' non-locked position the motor steps very slightly and the blind moves up about 5mm. It is therefore possible, if one had the patience of Job, to get the blind fully open or closed by rocking the switch.
Please can anyone shed some light on why this is happening.
Thanks
However, when everything is connected and the switch is made in which ever direction nothing happens. When the switch is 'rocked' from the 'off' position to the, lets say, 'up' non-locked position the motor steps very slightly and the blind moves up about 5mm. It is therefore possible, if one had the patience of Job, to get the blind fully open or closed by rocking the switch.
Please can anyone shed some light on why this is happening.
Thanks