How to program and install ST01C Intermatic timer

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2011
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ST01C and Ei600

How to program & install ST01C
Intermatic timer

Simplified steps for programming ST01C and Ei600 timer

ST01C and Ei600

See ST01C Manual
ST01C EZ set-up manual
Ei600 Manual
ST01C sell sheet with model numbers
Ei600 sell sheet with model numbers
Ei600 is heavy-duty, 5-year warranty version of ST01C 1-year warranty.
Manual has troubleshooting section.
Read more about troubleshoot and battery at bottom of page.
ST01c at Amazon

CR2 battery
Illustration at page bottom
Reset timer after battery change.

See all Intermatic in-wall timers

Notes:
> ST01C, Ei600 programmable Timers will not operate circuits located more than 100’ from timer
> Install 'Panasonic Type' CR2 battery with correct + and – markings/ shown at bottom of page
> 1 minute to swap battery before time and date disappear; all other programs remain
> Removing battery does not clear existing programs, just time and date.
> Power outage should not affect programming or time and date, unless battery is low or timer defective.

Inermatic Ratings: Clock operated enclosed switches, solid state outlet box mounted Models ST01C, ST01C70, ST01AC, ST01AC70, ST01ACL, EI400C, EI400LAC, EI400WC, EI600C, EI600LAC, EI600WC, rated 15A tungsten, 120V ac, 6A, 208-277V ac; DC Loads 4A 12V dc, 2A 28V dc; Motors 1HP 120VAC, 2HP 240V ac, Ballast 16A 120V ac, 208-277V ac; Resistive 20A 120-277Vac

Programming starts here

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1) Reset timer: Clear existing programs (from Section 4 of manual)
If you are having problem, RESET the timer
-Hold down ON-OFF
-Use paper clip, press and release RESET which is small round button to lower right of + button
-Keep holding ON-OFF until screen displays INIT, release ON-OFF button
-Wait until screen shows “12 am” in MANual mode
ST01C timer has 1 year limited warranty. Ei600 timer has 5 year limited warranty Warranty claim

ST01C Larger
LCD display does not light up. Image is photoshopped.

Daylight savings time

Time Zone Map

2) Set Date & Time (From Section 5 of manual)

-Press MODE until screen displays SET UP
-Press ON/OFF to display HOUR
-Press +/- until correct hour and AM/PM show
-Press ON/OFF to display MIN minutes
-Press +/- until correct minute shows
-Press ON/OFF to display Year
-Press +/- until correct year shows
-Press ON/OFF to display Month
-Press +/- until correct month shows
-Press ON/OFF to display Day
-Press +/- until correct day shows
-Press ON/OFF to display DST (daylight savings)
-Press +/- until display shows AUTO for automatic daylight savings adjustment
- OR Press +/- until display shows MANual (if your areas has no daylight savings)
-Press ON/OFF to display Time Zone: select NoRTH CENTral or SOUth using map on left
-Press ON/OFF to display Dawn-Dusk (to skip Dawn-Dusk press ON/OFF until set-up shows on display)
Since dawn-and-dusk times vary slightly depending on location, you can set exact dawn to dusk time according to times shown in local newspaper.
-Press ON/OFF and the Hour starts flashing. The word DAWN shows.
-Press + until correct DAWN hour shows
- Press ON/OFF and minutes flash
-Press + until correct DAWN minute shows
-Press ON/OFF and the Hour starts flashing. The word DUSK shows.
-Press + until correct DUSK hour shows
- Press ON/OFF and minutes flash
-Press + until correct DUSK minute shows
- Press ON/OFF again and timer loops back and SET UP shows
-Press MODE button to exit SET UP and save settings

Program 1 is ON
Program 2 is OFF
Program 3 is ON
Program 4 is OFF

3) Overview of programming
-Timer has 40 programs >> program1 thru program40
Step1 is to set Program1 ON with hour, minute, day.
Step2 is to set Program2 OFF with hour, minute, day
If you have problem, RESET timer by holding ON-OFF button while pressing reset button

4) Set ON-OFF programs (From Section 6 of manual)
Instructions below show how to set Program1 ON and Program2 OFF: repeat sequence to set program3 ON program4 OFF etc

	Step1: How to set Program1 ON (this is for both specific ON-OFF times & Dawn-Dusk) ←Press Mode button until PGM is flashing in display This example shows current time has been set at 12:30pm -Notice light bulb in upper left corner of display. -When light bulb is dark, that is ON time

	-Press Mode button until PGM starts flashing ←Press ON/OFF and 01 starts flashing for Program1
		DAWN to DUSK programming
	Here's the tricky part >> the manual is unclear at this point ←Press ON/OFF until screen looks like image on left For dawn to dusk continue using instructions on right..... For programming specific times, continue below ↓ Then press +/- button until screen looks like image below, and 12:00 is flashing	To set Dawn-Dusk operation. 1) Press + to display DUSK or DAWN for program 1 ON
	Now timer is ready for program1 ON time
	-Press ON-OFF and 12: starts flashing -Press +/- until correct Hour with AM PM for program1 ON -Press ON-OFF and :00 starts flashing -Press +/- until correct minute shows for program1 ON -Press ON-OFF and and ALL starts flashing (ALL is for all days of week Mo through Su) -Press +/- until correct days show for program1 ON	2) Press ON/OFF to display days you want Dawn-Dusk to operate. For example ALL is all days of week 3) Press ON/OFF and display will show SAVE
		4) Program loops back to to step 1 above. Display shows DUSK 02 Repeat steps 1-2-3 shown above to select program 2 OFF
	-Press ON-OFF to SAVE > the word SAVE appears for a moment

	Step 2) Program2 OFF You just saved Program1 -Press +/- to go to Program2 ←Screen looks like image on left

	←Press ON-OFF until screen looks like image on left ↓ Then press +/- button until screen looks like image below	When finished, press MODE to exit programming and automatically save settings
	Now timer is ready for program2 OFF time
	-Press ON-OFF and 12: starts flashing -Press +/- until correct Hour with AM PM for program2 OFF -Press ON-OFF and :00 starts flashing -Press +/- until correct minute shows for program2 OFF -Press ON-OFF and and ALL starts flashing (ALL is for all days of week Mo through Su) -Press +/- until correct days show for program2 OFF NOTE: be sure to select same days for ON and OFF programs

	-Press ON-OFF to SAVE > the word SAVE appears for a moment Program1 ON and Program2 OFF are set for specific times

When finished, press MODE to exit programming and automatically save settings

Days of the week include:
Individual days Mo thru Su
Weekdays M-F
Weekends WKD
ALL means all 7 days of week

Chart for setting timer

Example for water heater timer
Program 1 ON .... 5:30am M-F water heater ON for 1/2 hours Monday-Friday mornings
Program 2 OFF .... 6 pm M-F

Program 3 ON .... 7pm M-F water heater ON for 1-1/2 hours Monday-Friday evenings
Program 4 OFF.... 8:30pm M-F

Program 3 ON .... 7:30am WKD water heater ON for 1/2 hours weekend morning
Program 4 OFF ... 8am WKD

Program 5 ON .... 8pm WKD water heater ON for 1-1/2 hours weekend evenings
Program 6 OFF.... 9:30pm WKD

Program 7 ON .... 4:30pm ALL water heater ON all days for 1/2 hour at dinner time
Program 8 OFF... 5:00 pm ALL

NOTE: Your switch timer automatically skips any conflicting ON event

Operate ST01C manual override by pushing-in door that covers timer buttons

Back to programmable timers
Back to all timers

How to wire ST01C & EJ500 water heater timer

How to install ST01C & EJ500 to control electric water heater


How to wire ST01C &Ei600 & EJ500 & Ei400 to control lights, fan, motor
	How to wire ST01C & EJ500 These instructions are for replacing ordinary light switch that has 2 wires. Red wire is only used in 3-way circuit ... if your lights click on-and-off after installing ST01C, you connected red wire where blue wire should go, so change them. Put wire nut over end of red wire so it is capped off. If you connect Red and Blue wires together, the programming works in reverse, and 'off' becomes 'on' and 'on' becomes 'off' 1) Black wire from timer connects to Hot wire from breaker box 2) Blue wire from timer connects to Load (lights, fan, motor) 3) How to test for Hot and Load wires: Switch you are replacing has 2 wires. One wire is Hot. Other wire goes to Load. Disconnect wires from switch. Turn on power. Use ordinary tester, test each wire to bare copper wire. When tester lights up, that is Hot wire. The Hot wire connects to Black wire on timer. The other wire connects to Blue wire.
	3-way switch located on right, reverses operation of timer on left. Read more When red and blue timer wires are connected, they reverse on-off operation of timer. The blue wire must always go to Load, and the red wire is for reversing timer program. So the only purpose of the 2nd 3-way switch is to reverse and re-reverse timer program. Be sure to use dark-colored 'common' screw on 2nd 3-way switch as shown, and then use either of the other screws on the 2nd 3-way swtich.
	Ordinary 3 way circuit with 2 switches. Ground wire is not shown. 3-way switch has 2 brass-colored screws and 1 dark screw Larger image
	Single-pole circuit Ground wire is not shown. Single-pole switch has 2 brass-colored screws Larger image

	Typical 3-way switching, with 4-way switch circuit 4-way switch has 2 dark-colored screws and 2 brass-colored screws.
	ST01C or EJ500 inserted into 3-way/4-way circuit ST01C/EJ500 cannot replace 3-way switch 1-for-1 ST01C/EJ500 cannot replace 4-way switch 1-for1 Circuit needs extra wire going to 3-way switch (represented by blue wire)

Quick note. Manual has troubleshooting section. See ST01C Manual The important thing to remember is that this timer will keep programming inside memory indefinitely until you use reset button. If timer is flashing 12:00 after replacing battery, then just set current time and then your old programs are still there. As last resort for malfunctioning timer, hold down ON-OFF button and press and release reset button. Keep holding ON-OFF button until INIT flashes on display. Release ON-OFF and 12:00 will start flashing. If resetting timer does not restore functionality, then timer has gone bad. ST01C and battery operated timers do not require electricity for display to show. This timer has 1 year limited warranty from Intermatic. Warranty claim

Battery cannot be exposed to freezing temps longer than 20 days

Change CR2 battery on ST01C

If ST01C or EJ500 do not function correctly after battery change, then re-set timer and see if 12:00 is flashing. Then reprogram timer.

Reset instructions

ST01C uses one CR2 battery
When exposed to freezing temperatures, battery will last 20 days.

See Larger
See EJ500 Manual

EJ500 takes two LR44 'coin' batteries

See Larger

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EJ500 takes two LR44/SR44 batteries

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