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Hi, I have a gas fired hot water boiler with 3 zone valves and 4th for stand alone unit. I just replaced my old Lennox Heat- cool mercury thermostat. I replaced it with a Honeywell non programable round digital T8775C thermostat. Everything worked fine until the next day the ambient temp changed to 99 degrees on the display. I did find out I was supposed to install the two resisters on the first zone valve from power source point 1-2. After installing the resister assembly the display still reads 99 degrees. Will that change after it recharges ot is it toast. Thanks Richard