Intermatic 158ss12683 User Manual

Press the RESET and the NEXT ON/OFF buttons at the same time.

Release the buttons and wait for 1200 to start blinking.

Setting the calendar: Press the MODE button one time. ( CAL ) will appear in the top left corner. 

Year will be flashing between the word year and 2000. 

If the year is not showing 2000 you must repeat the RESET procedure.

To adjust the year press the M+ZONE+YEAR+ button (bottom right)

If you pass the present year use the (bottom center) button to subtract a year. 

Press the NEXT ON/OFF button one time. DATE will be flashing.

Press the DAY/DST (bottom left) button to set the current day.

Press the M+ZONE+YEAR+ (bottom right) to set the current month.

Press the NEXT ON/OFF button one time. DST/AUTO will be flashing. 

Press the DAY/DST button ( bottom left) to select daylight savings time. 

If daylight savings is not being used press the button again and select manual.

Press the NEXT ON/OFF button one time. ZONE will be flashing. 

Press the M+ZONE+YEAR+ button (bottom right) and select the zone area of your location. 

South , Central or North. 

Press the NEXT ON/OFF button one time. SUNUP will be flashing showing the preset time for this zone. 

To adjust this time press the HOUR+YEAR- button (bottom center) to adjust the hour and the 

M+ZONE+YEAR+ button (bottom right) to adjust the minutes.

Press the NEXT ON/OFF button one time. SUNDN will be flashing, showing the preset time for this zone. 

To adjust this time, press the HOUR+YEAR- button (bottom center) to adjust the hour and the

M+ZONE+YEAR+ button (bottom right) to adjust the minutes.

The calendar portion of the timer is now set.

Note: you must continue and set both the clock and the programming function.
Setting the clock:

Press the MODE button one time. (CLK) will be displayed in the top left corner of the timer. Using the 

HOUR+YEAR- button (bottom center) set the hour of your current time. 

Using the M+ZONE+YEAR+ (bottom right) button set the minutes of your current time.

Press the MODE button one time. (PGM) will be displayed on the top left corner of the timer. We are setting 

the ON time for Program 1. --:-- -- 1 ON will be displayed on the screen. 

Press the DAY/DST (bottom left) button to select the day or series of days the timer is to turn ON. You can 

either select the ASTRO time, which will adjust as the days get longer and shorter or a specific time. To use the 

ASTRO time press the DAY/DST until SNST appears on the screen. All seven days will be shown on the bottom

of the timer. 

Or to use a specific time press the DAY/DST button and select the day or series of days the timer is to turn ON.

Use the HOUR+YEAR- (bottom center) button and select the HOUR to turn the unit ON. Use the 

M+ZONE+YEAR+ (bottom right) button to set the MINUTES of your on time.

Press the next ON/OFF button one time. We are now setting the OFF time for program 1. Press the DAY/DST

(bottom left) to select the day or series of days of operation. To use the ASTRO time press the button until 

SNUP appears on your screen.

Or to select a specific time, press the DAY/DST button and select a day or series of days the unit is to turn Off.

Press the HOUR+YEAR- (bottom center) button and set the hour of your off time. Press the M+ZONE+YEAR+

(bottom right) button to select the minutes of your Off time. 

For additional programs press the NEXT ON/OFF button to the next program and follow above steps. Check the unused programs to

assure they are blank. To check the other programs press the NEXT ON/OFF button, you should see --:-- -- on the screen. If a time

appears press and release the DAY/DST button until the --:-- -- appears. Repeat this step thru Program 7 off. 

Press the MODE button. (AUTO) will appear on top center of screen.

Note: If your timer is in the ON position and your program calls for the unit to be OFF at this time press the NEXT ON/OFF button to 

toggle the unit to OFF.

For further assistance please call our technical support at 815-675-7000

http://www.intermatic.com

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