Quote:
Originally Posted by toomany MBZ
It takes just moments to remove the mono valve, you can inspect it for a torn diaphragm.
|
Full, uncommanded heat isn't usually associated with a torn diaphragm.
Quote:
Originally Posted by saludayaker
Is this my monovalve failed and stuck open or is it my CCU?
|
It could be (and often is) just a poor electrical connection at the monovalve. You can check the control circuit as follows (key on, CCU off):
One terminal at the monovalve should have system voltage present. The other terminal should have continuity to ground. If either is not present, there is a control issue.