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Sean BeanJul 26, 2025
Why is my Danfoss Control Unit cylinder/motor operating without remote being operated?
- RRodney PollardJul 26, 2025
If the Danfoss Control Unit cylinder or motor operates without remote controller activation, there might be several reasons. First, check and torque the spool control tension rod to 8 Nm [70 lbf•in]. Second, the electrical feedback transducer might not be in a neutral position, requiring replacement. Third, the remote electrical controller neutral position switch could be faulty, necessitating repair or replacement of the switch or wiring. Fourth, a sticking main spool in the valve section could be the issue; remove the actuators, inspect the spool for damage, and reinstall it, ensuring it moves freely. Finally, contamination in the hydraulic oil could be the cause, requiring a flush of the hydraulic system and replacement with clean, filtered oil.
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