Roller shutter stuck in halfway position

[TonyD]

Hello, new to the forum and thank you in advance for any assistance. I have a large roller shutter on my patio doors, which last evening stuck halfway. There is a buzzing sound from the control buttons. I appreciate it may not be electrical specific but can anyone advise how the shutter is lowered to allow access to the motor. The shutter has no manual over ride and will not lower if pressure applied. Thanks in advance

 

[Charlie_]

Depending on the make and model, manual operation can vary:
Some don’t even have them - for security reasons..
The buzzing could be 1 of many things, faulty relay, switch, loose wire, etc..
A multi meter in the right hands for 10 minutes would soon have it sorted

 

[Charlie_]

Maybe not sorted but diagnosed

 

[Jim_e_Jib]

Does the roller shutter have a sensor on the bottom to sense if it contacts anything as it's closing? If so, this could be faulty or it may have a battery powered transmitter to send the stop signal - the battery may be flat.

 

[TonyD]

Hello Jim e Jib, thanks for the reply, there are no sensors or independent batteries, it is hard wired.

 

[TonyD]

Hello Charlie thank you for the reply. I should have been more specific, the buzzing is coming from the motor, which is unaccessbile due to the shutter not being fully closed.

 

[Charlie_]

Is there an outer case covering everything up?
Sometimes these are riveted on so might need to pop them with a drill

 

[Deleted member 26818]

Sounds like the shutter is jammed, though it could be that water has entered the control box, and is sending a signal to the motor to both raise and lower at the same time.
Switch off at the isolator or fuse box and check the channels either side for debris.

 

[PEG]

A lot depends on whether it's stuck half way up,or half way down...

 

[Bobster]

though it could be that water has entered the control box, and is sending a signal to the motor to both raise and lower at the same time.

Not possible. Would simply go bang.

If it's a newer door (not installed pre 2004) it would be both mechanically and electrically interlocked to stop this from happening, as all reversing starters should be.

 

[Darkwood]

If it hums in either the up or down option it is usually one of 2 things, mechanically jammed or the motor capacitor has failed, these roller shutters often use a tubular single phase motor, I cannot say how you get at it as it varies with brand and model but once you access the motor if you disengage or remove it from the shutter and then try it it is often self evident if it was mechanically or electrical fault.

PS - if it is the common tubular motor it is often the case the capacitor is hidden within the tube itself.

 

[telectrix]

OP could always buy a convertible.

 

[Charlie_]

A 3rd option as to why it may be humming; it doesn’t know the words..
tfi Friday

 

[UNG]

Is there no override on the motor / gearbox so it can be lowered manually