Why is my heating thermostat flashing?
Why is my heating thermostat flashing? If you see a flashing light on your thermostat, that's a signal that there's a problem with your outdoor unit. When this happens, your outdoor unit will shut off and send a signal to your thermostat, causing it to blink. Thing is, that signal doesn't mean your indoor unit is made aware of the problem. Why is my PC power light flashing red? The red light on your computer's case indicates hard drive activity. If it's not blinking, that means your system is constantly reading data from - or writing it to - its...