{"id":565,"date":"2014-03-20T12:26:51","date_gmt":"2014-03-20T16:26:51","guid":{"rendered":"https:\/\/www.redrockmechanical.net\/blog\/?p=565"},"modified":"2026-09-25T13:14:22","modified_gmt":"2026-09-25T17:14:22","slug":"signs-of-a-furnace-control-board-problem","status":"publish","type":"post","link":"https:\/\/www.redrockmechanical.net\/blog\/signs-of-a-furnace-control-board-problem\/","title":{"rendered":"Signs of a Furnace Control Board Problem"},"content":{"rendered":"<p>The <a href=\"https:\/\/www.redrockmechanical.net\/heating\">modern furnace<\/a> is a marvel of technology, especially when compared to the furnaces of yore, which were basically large ovens with pipes hooked up to them. Contemporary furnaces have most of their operations linked into a furnace control board, which is the core of how the furnace works. The control board runs a series of operations\u2014starting the electronic ignition, opening the gas valve, checking the burner unit, activating the blower, shutting off the gas, venting the heat exchanger\u2014that moves the furnace through all the stages of providing you with heat.<\/p>\n<p>The control board can malfunction, however, and put your furnace\u2019s operation in jeopardy. When this occurs, you will need to call for professional heating service in Williston, VT to replace the defective board. Red Rock Mechanical can provide this service for you, fast and effectively, when you need it.<\/p>\n<p>Here are signs you may have a malfunctioning furnace control board:<\/p>\n<ul>\n<li><b>Uncomfortable temperatures: <\/b>If your furnace starts to make you either too hot or too cold, and the thermostat settings seem fine, then the problem might be a control board that is turning components off too soon or letting them run too long. Although there are multiple issues that can cause this malfunction, the control board is one of the main culprits.<\/li>\n<li><b>Interruption of the regular sequence of events: <\/b>Elaborating on the above warning, pay attention to your furnace\u2019s specific sequence of operation. (Don\u2019t open the furnace cabinet to check, just stay near it and listen to what happens.) Does the blower stage stop suddenly? Are the gas jets not activating? Is the ignition not coming on? Does the blower continue to run after everything else has shut off? Any of these irregularities in the normal sequence of events can indicate control board malfunctions.<\/li>\n<li><b>Diagnostic indicators: <\/b>Most boards have LED lights to indicate when there is a problem with their operation. If your furnace starts to run improperly, open up the control board access panel to see if any red warning lights have activated. There should be a diagnostic chart on the inside of the panel lid that will explain what the warning lights mean. When you call a technician, describe the diagnostic information so the technician will have a good idea what problem needs to be addressed before coming to your house.<\/li>\n<\/ul>\n<p>It takes a fine knowledge of electronics and furnace technology to replace a control board. Don\u2019t attempt to fiddle around with the panel on your own without the proper training. Make a call to heating experts with as much information as you can glean from the panel to explain the situation. They can take it from there.<\/p>\n<h2><b>Frequently Asked Questions<\/b><\/h2>\n<p><b>Question: What are the signs of a bad furnace control board?<\/b><b><br \/>\n<\/b><b>Answer:<\/b><span style=\"font-weight: 400;\"> Common signs include uncomfortable temperatures, irregular heating cycles, ignition problems, or a blower that runs at the wrong time. Because other furnace issues can cause similar symptoms, a professional inspection is the best way to confirm a control board problem.<\/span><\/p>\n<p><b>Question: Can a bad furnace control board cause uneven temperatures?<\/b><b><br \/>\n<\/b><b>Answer:<\/b><span style=\"font-weight: 400;\"> Yes, a malfunctioning control board may turn furnace components on or off too early or allow them to run too long. This can make your home feel too warm or too cold even when the thermostat appears to be set correctly.<\/span><\/p>\n<p><b>Question: Why is my furnace blower running after the heat shuts off?<\/b><b><br \/>\n<\/b><b>Answer:<\/b><span style=\"font-weight: 400;\"> A blower that continues running after the rest of the furnace shuts down can indicate a problem with the normal operating sequence. Since the control board manages that sequence, irregular blower operation may be a sign that the board needs professional attention.<\/span><\/p>\n<p><b>Question: What do the blinking lights on a furnace control board mean?<\/b><b><br \/>\n<\/b><b>Answer:<\/b><span style=\"font-weight: 400;\"> Many furnace control boards use LED lights and blinking patterns to indicate specific system or operating problems. The diagnostic chart inside the furnace access panel can help identify what the light pattern means before you contact a technician.<\/span><\/p>\n<p><b>Question: Can I replace a furnace control board myself?<\/b><b><br \/>\n<\/b><b>Answer:<\/b><span style=\"font-weight: 400;\"> Furnace control board replacement involves electrical components and requires a strong understanding of furnace operation and electronics. For safety and accurate diagnosis, the article recommends having a trained heating professional inspect and replace the board.<\/span><\/p>\n<p style=\"text-align: center;\"><strong>Red Rock Mechanical has helped people in Williston, VT with heating services for 23 years. If you need work done on your furnace\u2019s control board, give us a call.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The modern furnace is a marvel of technology, especially when compared to the furnaces of yore, which were basically large ovens with pipes hooked up to them. Contemporary furnaces have most of their operations linked into a furnace control board&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[76],"tags":[107,6,104],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/posts\/565"}],"collection":[{"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/comments?post=565"}],"version-history":[{"count":3,"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/posts\/565\/revisions"}],"predecessor-version":[{"id":2536,"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/posts\/565\/revisions\/2536"}],"wp:attachment":[{"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/media?parent=565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/categories?post=565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.redrockmechanical.net\/blog\/wp-json\/wp\/v2\/tags?post=565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}