We had our first run in with the electrical on our 2188 today. Went to speed up the rotor, and nothing happened. We can slow it down all we want, but it will not speed up. Called our service guy and he said to look at the limiter switches, which can get bent. Those were fine. 30 amp fuse in position #13 is fine. Ran a diagnostic with a multimeter at the connector to the motor, and have power both directions, depending on how the rocker switch is moved. We figured it must be the gear head motor. Changed it out with the fan speed motor figuring the problem was solved. The fan motor now does the same thing as the rotor speed motor did, but the rotor speed motor works just fine as a fan speed control. Go figure. So its not the gear head motor. I am wondering if there isn't a poor ground of some kind preventing movement to increase rotor speed. Took a look at the rocker switch itself, but there are too many pins to do just a basic diagnostic test. Checked the parts that involve the speed control to see if any were seized or tight- nothing like that at all. The parts move freely both directions. Has anyone had a problem like I am describing? If so please share what you did to get the problem rectified. I am stumped on this one.
Thanks in advance.
Thanks in advance.