01-18-2017, 12:36 PM
We are having a succession of difficulties with dash heat and AC controls in our '89 (coach #197).
The problem began when we had the AC compressor) replaced and the AC condensor fans rehabed a couple of years ago. After that, we noticed that, even if the controls are set to off, either the AC condensor fans are running or the front heater pump under the coach is running whenever the ignition is turned on. I took it in to have that fixed this month, and the tech worked on the front controls, concluding that the pushbutton control (Delco 3610-501) might be defective. He did not have the part, and could not solve the problem.
During the work, he disconnected the various spade connector wires running to the controls and attempted to substitute the control panel with a newer model that had a different array of spade connections. It didn't work, so he had to put the original push button control back in. When he was done, I don't think he was sure whether he reconnected them to the original spades. Since that attempt was made, we have lost all dash heat. The fans run for the heater and the defroster, but no heat comes. Weather conditions prevent us from determining whether the AC is really Working. I checked the lever valve (on the heater hose near the front pump under the passenger side of the coach) that permits coolant to go to the heater core, and the lever works and is connected to the cable coming from the dash controls.
I am suspecting that the issue may be in the dash control. Does anyone have any ideas?
I could really use a diagram of which wires should be running to which spades on the rear of the controls. Thanks, Dick and Maura Quirk ([email protected])
The problem began when we had the AC compressor) replaced and the AC condensor fans rehabed a couple of years ago. After that, we noticed that, even if the controls are set to off, either the AC condensor fans are running or the front heater pump under the coach is running whenever the ignition is turned on. I took it in to have that fixed this month, and the tech worked on the front controls, concluding that the pushbutton control (Delco 3610-501) might be defective. He did not have the part, and could not solve the problem.
During the work, he disconnected the various spade connector wires running to the controls and attempted to substitute the control panel with a newer model that had a different array of spade connections. It didn't work, so he had to put the original push button control back in. When he was done, I don't think he was sure whether he reconnected them to the original spades. Since that attempt was made, we have lost all dash heat. The fans run for the heater and the defroster, but no heat comes. Weather conditions prevent us from determining whether the AC is really Working. I checked the lever valve (on the heater hose near the front pump under the passenger side of the coach) that permits coolant to go to the heater core, and the lever works and is connected to the cable coming from the dash controls.
I am suspecting that the issue may be in the dash control. Does anyone have any ideas?
I could really use a diagram of which wires should be running to which spades on the rear of the controls. Thanks, Dick and Maura Quirk ([email protected])