01-27-2019, 07:54 AM
There are a couple of things that come to mind here, and mind you, I am not an expert. Rudy is the expert.
1. If the coolant level in the AH is not full, the DHW doesn’t provide the temperatures that the cabin heating systems see. Your expansion tank (that’s the plastic tank next to the AH) should be lower when the system is cold as opposed to hot. Several inches difference. If your not seeing those level changes, fix that issue first.
2. The mixing valve has a plastic knob that has splines inside and the shaft (brass) has mating splines. Turning the knob with pliers can strip the splines and even though it moves from stop to stop, the brass shaft isn’t turning. I’m not sure, but I think there are replacement cores that come with a new knob.
1. If the coolant level in the AH is not full, the DHW doesn’t provide the temperatures that the cabin heating systems see. Your expansion tank (that’s the plastic tank next to the AH) should be lower when the system is cold as opposed to hot. Several inches difference. If your not seeing those level changes, fix that issue first.
2. The mixing valve has a plastic knob that has splines inside and the shaft (brass) has mating splines. Turning the knob with pliers can strip the splines and even though it moves from stop to stop, the brass shaft isn’t turning. I’m not sure, but I think there are replacement cores that come with a new knob.
Gordon Jones
2000-45'-2slide-#567