Worcester MT10 Timer doesn't start. The clock seems to work fine but when it is time to start the heating system doesn't. Please someone csn help me? Thanks

click the link below for the manual for your boiler
http://www.freeboilermanuals.com/assets/pdf/ariston/Microcombi_23-&27.pdf

There is a sliding button on the back side to the right of inner frame. The slider has "Normal -> Time -> AL SNZ -> CountDown->Timer" marked on it.
You need to move that button to time basically to the right side and then user up and down buttons to adjust the time.
Hope this helps.
-- Anant

You can pull the crown and set the analog time. However I am also finding it difficult to set the digital time. It seem there is no option, or its not mentioned in the manual

This is for Ultronic LCD clock/weather gadget.

keywords (from display)
Ultronic forecast week day humidity temperature trend comfort level
- DOWN = toggles F/C temp
- UP = toggles alarm
- MODE = selects date/time display
- hold down MODE to enter "set" mode for data currently displayed
- use momentary MODE to choose target item
- use UP/DOWN to change item

The crown has 3 positions.

Normal screwed down.
First pull out position.
Second pull out position.

Setting the Time:
Pull out the crown to position 3.
Rotate the crown to set the exact time.
Ensure that you are in the daytime12 hour segment by allowing the hands to pass 12 o'clock and notice if the date moved on or not.
If the date changed, then you will need to advance at least 2 hours before moving on to set the date.
If you do not need to change the date, return the crown to position 1.


Setting the Date:
DO NOT DO THIS IF THE WATCH IS BETWEEN 8pm & 2am
Pull crown to position 2.
Rotate the crown clockwise to set to the correct date.
Return the crown to position 1.


Setting the Alarm [12 hour]
Pull the crown to position 2.
Rotate the crown anti clockwise to move the alarm hand to the desired time.
Return the crown to position 1.
To activate the alarm, press the 8 o'clock button. You will hear 2 beeps.
To deactivate the alarm, press the 8 o'clock button. You will hear 1 beep.
NB If the alarm is not cancelled while it sounds the first time, it will repeat again in 2 minutes time. The alarm sound last for 15 seconds. If the alarm time coincides with 1 beep of the countdown, the alarm function will be cancelled.


Battery EOL [End Of Life]
The Swiss ISA 8270 movement uses a 395 cell and will signify a low power state by advancing the small seconds hand 4 steps every 4 seconds.


Setting the Countdown
You can specify a countdown of between 1 and 10 minutes.
Press the 4 o'clock button to enter setting mode. You will hear 1 beep.
Press the 4 o'clock button to move the central timing hand successively to the desired countdown time.
Wait 3 seconds for the watch to automatically exit the setting mode.
You can change the duration of the countdown [except in the last minute] at any time.
e.g. If the countdown is set to 10minutes, and you now want to change the countdown to 9 minutes, press the 4 o'clock button. The hours/seconds counter sub-dial will perform one complete turn and then stop at 60, before continuing.


Activating the Countdown:
Press the 2 o'clock button to start the countdown. You will hear 2 beeps.
The hours/seconds counter sub-dial will perform one complete turn and then stop at 60, before continuing.
When the countdown begins, the hour/seconds counter sub-dial indicates the seconds with 1 step every 2 seconds, and the central timing hand indicates the minutes with 1 step being 2.4 seconds.


Countdown tone:
There are 2 beeps every minute.
in the last minute:
50 seconds=1 beep.
40 seconds=1 beep.
30 seconds=2 beeps.
20 seconds=2 beeps.
10 seconds and less=1 beep every second with zero being 1 second long beep. Timer function automatically starts.


Timer:
After countdown has finished the timer starts automatically.
The central timing hand indicates the minutes with 1 step every 12 seconds. The hour/minutes counter sub-dial indicates the hours up to a maximum of 96.
Press the 4 o'clock button to see the timer seconds [display lasts up to a minute].
Press the 4 o'clock button to see the timer hours.
The timer has a maximum time of 96 hours [4 days] after which the hour/seconds sub-dial counter will stay at 0 and the central timing hand will stay at 12.


Start/Stop Timer:
Press the 2 o'clock button to stop the timer. You will hear 1 beep.
Press the 2 o'clock button to resume the timer. You will hear 2 beeps.


Setting the Countdown & Timer:
Countdown reset:
Press the 2 o'clock button to stop the countdown. You will hear 1 beep.
Press the 4 o'clock button to reset.


Setting the Timer:
Press the 2 o'clock button to stop the timer. The hour/seconds counter sub-dial will show the elapsed hours and the central timing hand the elapsed minutes.
Press the 4 o'clock button to view the seconds elapsed on the hour/seconds counter sub-dial.
Press the 4 o'clock button to reset.


Resetting the Hands:
If the hands do not zero correctly, which might occur after a battery change or a violent shock, you can make adjustments by doing the following settings as long as the countdown is not in operation.
To correct the hour/seconds counter sub-dial, pull the crown out to position 2 and wait 1 second.
Press either the 2 or 4 o'clock button; the central timing hand will turn and stop [not necessarily at 12].
Press the 2 o'clock button to increment the hours/seconds counter sub-dial hand to position it at 60.
To correct the central timing hand, press the 4 o'clock button to increment the hand to the 12 position.
Return the crown to position 1.



If the battery had been replaced, the central timing hand defaults to the 10 minute position. If the battery had not been replaced, the central timing hand will return to the previously set position.

The roles haven't been reversed. The seconds hand for normal timekeeping is the small one and the chronograph timer seconds hand is the large one. The reason for that is that it is much easier to determine the precise second with the larger hand. It working exactly as it should. If you like having the large second hand moving all the time you will not hurt the watch by leaving it running. All chronographs work this way. Nice watch - wear it well!

You were not very specific about you clock description, Many of the German clocks were using auto correct features.

You may not have this function.

Move the hour hand to the correct hour.

Hope this tip help you.

R/
David
http://antiqueclock.clockstop.com/

This information comes from the movement manufacture and helps figure out what does what. I also have a yacht timer with no instructions.....hope this helps

A combination of design and technology, ISA 8270 is a precise racing timer developed especially for yachting races, displaying count-down during regatta departures with audible signals, followed by cumulated time during races. The dimensions (25.60mm, H 4.60mm) offer a large variety of opportunities for watch designs. It is suitable for the manufacture of models for gents and ladies watches.

This new calibre is an analogue quartz timer fitted with an alarm function. It displays the hours, minutes, seconds (small jumping seconds at 2 o’clock counter), and date shown by a date window at 6 o’clock. In addition, it allows count-down and race timing. The small hand at 10 o’clock counter and the central hand facilitate the display of count-down and time measurement clearly visible.

Count-down, Racing Timer and Alarm features

ISA 8270 yachting movement not only provides the traditional count-down at 10, 6 and 5 minutes, but also the versatility of setting count-downs at any minute from 10 to 1 minute.

One special feature is that it allows the possibility of recalibrating the count-down at every minute up to the last minute before departure. This latter function allows the navigators to readjust the watch at any time during the count-down to the closest full minute in order to be in line with the official procedure announced by the racing committee (RC) boat so as to get off the best possible start. Audible signals are emitted every minute to alert the progress of count-down. To give higher accuracy, every-second audible signals are emitted during the last 10 seconds count-down to ensure knife-sharp precision. Immediately after the departure, the count-down automatically shifts to the racing timer mode to measure the time of the race event for a maximum of 96 hours. Setting, start/stop and recalibration of count-down and race timing are facilitated by the pushers (at 2 o’clock and 4 o’clock), which are easier to operate.

Thanks to an oversized counter hand and a highly visible flange on the dial that our customers may design, the navigators can best monitor the time remaining before departure and during the entire procedure.

The alarm time is displayed in an analogue mode. Alarm start/stop is enabled by a pusher at 8 o’clock and is displayed by a central alarm hand (12 hours).

Superb performance

Born of precision, accuracy and innovation, ISA 8270 offers excellent quality and performance. Intended for yachting races, this movement gives answer to sports watches requiring indispensable qualities: strength, endurance, agility and outstanding speed.
When the trend of sportive and fashionable quartz watches prevails, this new Swiss Made ISA 8270 priced competitively with outstanding performance answers the expectations of an increasing market demand and customers, who wish to add a number of value-added exceptional designs to their next collections with strong sporting character.

Specifications
Calibre: ISA 8270 Yachting Movement
Size 11 1/2’’’
Swiss Made quartz movement, 9 jewels
6 hands, 2 counters, 3 pushers
Hour, minute, small second at 2H counter
Date window at 6H
Count-down (max. 10 minutes)
Racing timer (max. 96 hours)
Alarm (12 hours)

Technical information
Diameter: 25.60mm
Movement height: 4.60mm
Height of stem and pushers: 2.25mm

I just bought a Sportline 241 last week. The instructions are as follows. Note that there are no instructions for setting the 12/24 hour time option. Mine is in 24 hour mode (which is what I wanted), but I do not recall if it arrived that way or if I stumbled onto this mode when setting the time/date or alarm functions.

I hope this helps.


SPORTLINE 241 WALKING ADVANTAGE KEYCHAIN STOPWATCH

FEATURES:
24 hour stopwatch
Time-of-day and calendar
Alarm clock
12/24 hour time option

BATTERY:
Replace with LR41 battery

TO SET TIME AND CALENDAR:
From normal time display, press MODE button three times to enter Set Time/Date Mode. Seconds is automatically selected.
Press SPLIT/RESET button to cycle through minutes, hours, day, month, day of week, seconds.
Press START/STOP SET button to change digits on any of the above (seconds only: resets to 00).
Press and hold START/STOP SET button to advance digits rapidly.
Press MODE button once to return to normal time display.
From normal time display, press and hold START/STOP SET button to see the month, day, and day-of-week.

TO SET ALARM:
From normal time display, press MODE button twice to enter Set Alarm Mode. Hours is automatically selected.
Press SPLIT/RESET button to cycle through minutes and hours.
Press START/STOP SET button to change digits.
Press and hold START/STOP SET button to advance digits rapidly.
Press MODE button to return to normal time display.
From normal time display, press and hold SPLIT/RESET button to see the alarm time setting.

TO ARM/DISARM ALARM SOUND:
From normal time display, press and hold SPLIT/RESET button, then repeatedly press START/STOP SET button to arm/disarm alarm sound.
Alarm will sound when indicator shows in upper right corner.
Release SPLIT/RESET button to return to normal time display.

TO ARM/DISARM HOURLY CHIME SOUND:
From normal time display, press and hold SPLIT/RESET button, then repeatedly press MODE button to arm/disarm hourly chime sound.
Chime will sound when dashes appear along top of display.
Release SPLIT/RESET button to return to normal time display.


STOPWATCH OPERATION - GENERAL:
From normal time display, press MODE button once to reach stopwatch timer display.
After use of any stopwatch feature, press MODE button once to return to normal time display.

START-STOP (TIME-IN/TIME-OUT) TIMING:
With stopwatch timer on display, repeatedly press START/STOP SET button to start or stop the timer. When timer is stopped, press SPLIT/RESET button to reset timer to 0.

SPLIT TIMING:
With stopwatch timer on display, start the timer with START/STOP SET button. Repeatedly press SPLIT/RESET button to split or release the timer. Press START/STOP SET button to stop the timer. Press SPLIT/RESET button to reset timer to 0.

1-2 FAST FINISH:
With stopwatch timer on display, start the timer with START/STOP SET button.
Press SPLIT/RESET button for STOP #1.
Press START/STOP SET button for STOP #2. The stop time for #1 will now be shown.
Press SPLIT/RESET button. The stop time for #2 will now be shown.
Press SPLIT/RESET button to reset the timer to 0.