How to re-set automatic time switch?

[FLeckie]

Hello

We have a Legrand MicroRex automatic time switch controlling an electric water heater. When the plumber installed it, he told us never to adjust the clock, as it would self-adjust if necessary. Following a period when it was turned off completely, we've had it running again for a couple of months, and I now realise from the electricity bill that it has been operating during the day, rather than on cheaper night-time power. Can anyone tell me how to adjust the clock? I have the user instructions, but they just say the same as the plumber did - don't touch!

Any help much appreciated!

 

[D_Hailsham]

Does this help?

Click on the image and it will open the Instructions pdf. (English starts on page 3.)

http://www.datasheetarchive.com/ind...rds=legrand+microrex&database=user-highscore#

 

[FLeckie]

Thank you for the link - I've had a look, but my timer has a round dial with hands, it looks quite different. I've checked the instructions and it is called MicroRex Su/Wi - 047 58 / 55 / 53 / 51

It was installed about 18 months ago.

 

[McCombi]

http://www.google.co.uk/url?sa=t&rc...y4C4Ag&usg=AFQjCNFWzNl7Vj1Y17v18RvdoS54MNtW7Q

not sure if link worked, if not type in 'microrex su/wi instructions' in google and it was half way down a pdf file starting in german 'schaltuhr, autom.....
Theres a diagram at the bottom right showing a timer. If its not the same one it will be similar to set times etc Id imagine.

 

[FLeckie]

thank you for the link - those are the instructions I have.

It shows you how to set the times when the appliance should be turned on or off, but not how to change the time of the clock itself - it just says, in red letters so you know it's important! - do not alter the time manually...

I was hoping that someone could tell me how to do this forbidden procedure - presumably it is something that has to be done occasionally?

 

[D_Hailsham]

I'm just wondering how your timer is able to correct automatically for the time it has been off: seems almost magical.

Then I read the leaflet linked by brassedoff and in the Safety Notes (in box with red border) it refers to a LiMgO battery. This is obviously there to keep an internal digital clock running until the power is restored and the mechanical clock can be driven round to the correct time.

My guess is that the battery has expired and you need someone to open the timer and replace it.

 

[doitall]

Grasshopper say that a clock that doesn't work is guaranteed to be right twice a day.

Of course I may be old and grey, but lateral thinking would say turn the damn timer off until it reads the right time

 

[McCombi]

I assume there are no led lights flashing?

 

[McCombi]

Grasshopper say that a clock that doesn't work is guaranteed to be right twice a day.

Of course I may be old and grey, but lateral thinking would say turn the damn timer off until it reads the right time

never thought of that.

 

[FLeckie]

Doitall - genius! Why didn't I think of that... Just hope it doesn't mean bumbling around the cellar at 3 in the morning...

There aren't any LEDs flashing, the light is on all the time. I'll try turning on at the right time, and hope that sorts it.

Many thanks!

 

[doitall]

Doitall - genius! Why didn't I think of that... Just hope it doesn't mean bumbling around the cellar at 3 in the morning...

There aren't any LEDs flashing, the light is on all the time. I'll try turning on at the right time, and hope that sorts it.

Many thanks!

Turn it off when it reads 10am or any reasonable time.

 

[D_Hailsham]

But that only gets the time right. What about the date? The timer has auto summer/winter change-over so it must have a build in calendar!

That's why it has a battery.

 

[doitall]

But that only gets the time right. What about the date? The timer has auto summer/winter change-over so it must have a build in calendar!

That's why it has a battery.

That is true Dave

One assumes that pressing + & ok at the same time doesn't reset the timer, whereas you could re-enter the data from scratch including the time, days etc.

 

[FLeckie]

Tried turning off and then turning back on when it reached the time it was showing... unfortunately, the clock just re-set itself to a new, random time.

Obviously has a mind of its own.

 

[D_Hailsham]

Tried turning off and then turning back on when it reached the time it was showing... unfortunately, the clock just re-set itself to a new, random time.

Obviously has a mind of its own.

Or the battery is dead.