Reply To: Irrigation is canceled, no LOG

[Anonymous]

Valves off:
Power supply: 26.4V
Between power supply and COM 26.3V

A valve on:
Power supply to COM 25.9V
Valve to COM 25.7V

Resistance when valve open:
Between the valve and COM the number jumps around wildly -0.1 to 155, you often see 40.
between valve and power supply: jumps between 3 – 5.5 ohms.

This morning several programs were simply canceled again. I don't see a pattern.
Program started with 3 valves. The first valve ran (10 minutes), is in the LOG. The other two (15 and 25 minutes) are not.
The failing valves are started manually, start up, turn off at some point and do not appear in the LOG.
Then another valve started manually, ran through, is in the LOG.
Then another program with two valves (20 minutes each) was started. The first valve went through, the second came on, went off after a few minutes and no LOG. The missing valve started manually, goes out after a few minutes, no LOG.

Third program started with two valves in parallel. After a few minutes both go out, no LOG.