Have orbit timer mod 57974 , 4 station with an a and b zone control. three of five units work fine. the other two wont activate the solenoids. i tested the solenoids and checked the fuses on the boxes as well as the outlets providing power to the units, and the back up AA batteries. the units both program and say they are working when activated in manual mode, yet they do not activate the solenoid ???

There are three program selections A,B,C. You need to see page 10 and read on from there. http://www.manualslib.com/manual/934396/Orbit-57894.html?page=10#manual

First check the solenoids by performing a continuity test on all of them. For all the solenoids that test good, power each one with 24 volts to make sure that the plunger moves. Then go to the timer and initiate an ON cycle for, say, zone one. Go to the zone 1 connector on timer and check for presence of 24 volts ac. If not present try zone 2 for output. If nada then there is something wrong with the electronics of the timer.

http://waterheatertimer.org/Woods-timers-and-manuals.html#sprinkler

Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Try this link
http://fileshare.eshop.bg/index.php?what=search2&searchstring=BOSCH+WFB+2005

Which timer do you have?
Copy following link for link for sprinkler timer manuals for Orbit, Nelson, Melnor, etc
http://waterheatertimer.org/Woods-timers-and-manuals.html#sprinkler

Add a comment wit brand & model number, and include if this is new timer, or timer worked before and stopped functioning.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

What model number of timer? I have to see exactly which timer you have to answer question.
What wire goes where?
Are you using 120Volts?
What is output voltage of timer?
What voltage is solenoid? 24Volt or 120Volt?
Copy following links for Orbit manuals:
http://www.orbitonline.com/support/guides/Manualsearch3.cfm?Brand=02&Type=Timers

http://waterheatertimer.org/Woods-timers-and-manuals.html#sprinkler

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Timer is not identified.
Orbit shows five different 4-station timers: Add a comment and say which timer is being used, and what voltage you are using and what wires you have.
http://www.orbitonline.com/support/guides/Manualsearch3.cfm?Brand=02&Type=Timers

Example below:
-Power to operate timer:
The example timer has power cord that plugs into outlet.
Other timers have low voltage transformer that plugs into outlet.

Connecting solenoids.
Each station or solenoid has two wires:
The common wires are connected together so that common connects to each solenoid, and the second wire connects to terminals 1 2 3 4 as shown.

I have done this in a couple ways. With a digital timer you can select a zone on manual and turn only that zone on. with a mechanical timer, you can set the dial to that zone and increas the duration. You can "hot wire" the zone by moving the zone wire to connect to the low voltage wire input to the zone. You can take a transformer out to the ground box and with an extention cord "hot wire " the zone at the ground box.

Have you programmed the new one with all the info for date and time? Did you set the zones for the days you want and watering times?

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

the should be a pump or master solenoid connection inside the controller