Light is oil level.
My Bosch acts the same, I don't have the hot/cold idle cable attached either. With the cable attached it should be about 1k cold and 7-800 warm. My guess is the waxstat is up the gunger.
My Bosch acts the same, I don't have the hot/cold idle cable attached either. With the cable attached it should be about 1k cold and 7-800 warm. My guess is the waxstat is up the gunger.