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The VSI joystick controller of the Jet 3 with a flash code of 7 LEDs flashing on the battery condition display indicates a possible joystick fault.
The most likely problem is with the joystick gimble. You can also get a 7 bar flash if the joystick is out of the neutral position at start-up.
Run the joystick in a circle and back and forth feeling for any sticky or broken/dead spots. Check to see if the spring and gimble come back to center when you release it. Turn off the VSI and try centering the joystick. Turn the VSI back on and see if you can get the fault to clear.
The only recourse is to have the unit rebuilt or replaced . A rebuilt VSI will run about $500 and a new one about $1600. For this reason it is best to check with your insurance before performing the work to see if its a covered item. Hope this helps
You can turn off the Thermostat, and the powers switch on the furnance and turn the breaker off in the breaker box wait about 20 - 30 minutes and turn the breaker back on, and the power to the furance back on and the thermostat, this should reset the system.
That demo mode thing is painfully annoying. With mine, I had to hold the 'display/demo' button in for about 1 second and then the words "NO DEMO" appeared. That fixed it.
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