Our ST7000 powers up, goes onto stanby and shows the correct heading. When auto is pressed you can hear the the solenoid in the CR interface unit click in and the constantly running hydraulic power pack starts running.
All OK so far!
However when you input a course change an alarm
sounds and a message comes up on the display "NO MAIN POWER" and the unit returns to standby.
Using a multi meter I have checked that there is input power to the control unit (course computer) and the CR interface unit. Also there is power at the terminal blocks in the interface units for the supply and clutch
. There appears to be no power on either of the solenoid valve outputs in the interface unit when you input a course change.
Any ideas on what I am missing or what is wrong?
Can I apply a voltage directly to the solenoid valves to see if they operate?
The input power is 24v but the voltage on the clutch
terminals is 12v, are the solenoid valves likely to work on 12V?