Given that there's someone or other here that knows about most stuff.......
The roller shutter on my workshop has started behaving a little oddly. When you hit the up button it'll rise about a foot and then stop and the light on the control box will start flashing (it's usually solid). If you press the up button again it'll rise another foot maybe and stop again. I've not tried to see if the door will actually go all the way up this way.
If however you grab the bottom of the door and "give it a hand" until it's about waist level or so will get the door to go all the way up.
Coming down the door will get to the bottom and stop but the motor doesn't spin as far as it should so whilst the bottom of the door is on the floor the anti-lift bar doesn't engage in the "comb" at the top until a second press of the button.
On the door frame there are two magnets, and there's a box on the door that passes them. I'm assuming this is to tell the control when it's at the top and bottom. That box on the door has what looks like an LED in it that I'm sure I have seen flash at one time or another but I'm not 100% on that as it could just have been a reflection and it's not doing it when I specifically look at it. Now there's no wire to that box on the door so I have to assume that it talks to the control by radio of some sort which means power which means batteries to me.
Now for a bit of a theory that I'm looking for someone to either confirm or tell me I'm talking rubbish.
So I'm wondering, could the batteries have gone flat in that box and when the door starts to rise the control isn't getting any signal to tell it that it's gone past the first magnet so it stops assuming there's something wrong (not sure why it rises if you help it if this is the case - unless the control is measuring stall voltage on the motor and uses a combination of that and the magnets). When it gets to the top it's stopping due to the stall voltage on the motor rather than because it sees the top magnet. On the way down it again stops because of the stall voltage rather than seeing the bottom magnet which is why it doesn't go as far as the comb.
I know the easy answer is to pull the box off the door and have a look at it but I seldom use the roller door and it always seems to have been wet when I've been in there recently.
The roller shutter on my workshop has started behaving a little oddly. When you hit the up button it'll rise about a foot and then stop and the light on the control box will start flashing (it's usually solid). If you press the up button again it'll rise another foot maybe and stop again. I've not tried to see if the door will actually go all the way up this way.
If however you grab the bottom of the door and "give it a hand" until it's about waist level or so will get the door to go all the way up.
Coming down the door will get to the bottom and stop but the motor doesn't spin as far as it should so whilst the bottom of the door is on the floor the anti-lift bar doesn't engage in the "comb" at the top until a second press of the button.
On the door frame there are two magnets, and there's a box on the door that passes them. I'm assuming this is to tell the control when it's at the top and bottom. That box on the door has what looks like an LED in it that I'm sure I have seen flash at one time or another but I'm not 100% on that as it could just have been a reflection and it's not doing it when I specifically look at it. Now there's no wire to that box on the door so I have to assume that it talks to the control by radio of some sort which means power which means batteries to me.
Now for a bit of a theory that I'm looking for someone to either confirm or tell me I'm talking rubbish.
So I'm wondering, could the batteries have gone flat in that box and when the door starts to rise the control isn't getting any signal to tell it that it's gone past the first magnet so it stops assuming there's something wrong (not sure why it rises if you help it if this is the case - unless the control is measuring stall voltage on the motor and uses a combination of that and the magnets). When it gets to the top it's stopping due to the stall voltage on the motor rather than because it sees the top magnet. On the way down it again stops because of the stall voltage rather than seeing the bottom magnet which is why it doesn't go as far as the comb.
I know the easy answer is to pull the box off the door and have a look at it but I seldom use the roller door and it always seems to have been wet when I've been in there recently.
