But, do not worry there are step to solve this problem: Make sure to check a gas if number of 22 on screen. If something bad happened, it will make an error codes appearing and there is a blinking red light on furnace. ... For example, some models will use a blinking L.E.D. Therefore, it is nearly impossible to describe every flash code event for every furnace for every manufacturer. .wsite-elements.wsite-footer h2, .wsite-elements.wsite-footer .product-long .product-title, .wsite-elements.wsite-footer .product-large .product-title, .wsite-elements.wsite-footer .product-small .product-title{} var STATIC_BASE = '//cdn1.editmysite.com/'; I did have the thermostat set on 68. [ 0 Answers ] I have a Carrier Infinity ICS furnace that's only 3 years old. If your furnace fails and you find the flash code, it is very likely the flash code instructions are on a label inside the furnace panel. Furnace flashing 4 times (Ducane) Ask Question Asked 7 years ago. If you have an American standard furnace, it is blinking red light. Sometimes, blinking red light on furnace will work if there is bad condition in furnace. No need…. Modern day high efficiency furnaces monitor a variety of conditions before, during and after the combustion process. #wsite-title {} .wsite-product .wsite-product-price a {} You can also try to unplug the trip the breaker for five minutes and reset or check the hose going to drain. .wsite-headline-paragraph,.wsite-header-section .paragraph {} When your system has developed a fault and the indoor green operation light is blinking, press and hold the "Cancel" button for approx. If LED number 1 and number 2 make a flashing slow, there might be three problems the first is the furnace not connected with ground properly, the second one is the voltage under 75 volts and the last is the connector is not attached to the board. Try turning the fan to “ON” using the fan switch on the thermostat to test for power to furnace. //-->. If not for the work i was doing around the unit I would not have noticed it because everything seem to be working fine. If your furnace does not have a pilot light, move on to the next step. .wsite-phone {} If the light is doing anything other than blinking green, then you may have to call out a professional. _W.themePlugins = []; _W.recaptchaUrl = "https://www.google.com/recaptcha/api.js";