Furnace Circuit Board Fuse

This is one of the most common reasons why the furnace fuse is blown.

Furnace circuit board fuse.

This fuse is used on the circuit board of many rheem ruud and weatherking models. Fuse in furnace circuit board keep blowing i did a recent service call and the 5 amp fuse in the circuit board on the furnace was blown. Some people call it a control board but whatever you call it you need a new one. These fuses are sold in a package of 5 fuses.

Is your furnace running but blowing cold air. The good news and bad news about electric furnace troubleshooting. Thermostat setting and batteries clean air filter and closed access panel pilot light and gas valve furnace switch and electrical panel circuit breaker fuse box even though your furnace runs on fuel such as natural. Let s say you determine your carrier furnace circuit board has gone bad.

Check out this post. Your furnace s control board has a separate fuse that protects it from getting too hot. If your furnace or heater won t turn on there are a couple of things you should check first before calling the pros. Noticed the 3a fuse was blown replaced it and taped down the switch thats on the front of the unit.

Just enter your carrier model number in our parts finder choose your shipping options and purchase the. The guy has a new condensing unit installed last year. Furnace blowing cold air. I need your advice regarding lennox furnace circuit board problems.

First the bad. If the fuse blows when you have no low voltage wires hooked to the furnace then you have an internal problem like a bad limit gas valve connection or control board. I d be more concerned about smoke coming out of the furnace. This can be the sign of an electrical problem putting you at risk of a serious fire.

This fuse replaces rheem ruud weatherking part numbers 44 atc3 and 44 24351 01. If someone is poking around your furnace and is not too careful they could more wires so that they come into contact with the furnace s wire frame causing them to short and blow the fuse on the furnace board. If the smoke is escaping you have to get it replaced. Secondary voltage fuse is open check for short circuit in secoundary voltage wiring 24 vac wiring.

The fuse protects the low voltage transformer in the case of a short circuit or overload in the low voltage components thermostat or wiring. When the furnace went out i checked the circuit board and noticed i was getting code 24. Here are a few of the most common problems.