Post by howie on Jan 5, 2014 8:04:58 GMT -5
In some areas it's way to cold to rely on on-line help to diagnose complicated heating problems as it can take many back and forth posts to resolve it, especially on weekends where you won't be able to get parts. Call a local pro. That said, in most cases in high efficiency models, when they fail they usually send a error code. If your appliance has a LCD display on the front, look at it and write down what you see. Then shut the power off, wait 30 seconds and turn it back on.
It should try a restart. It may or may not relight. If it does save that error code you wrote down for the pro when he shows up. After you have cycled the power, you will have cleared errors and the pro won't know where to start to resolve the issue.
If you don't have a LCD display as most warm air furnaces do not, there will be a flashing LED on the main control board. You may have to remove the most front (trim) cover to see this. Then look for a clear plastic sight glass down at the blower compartment. Look through this for a flashing light. DO NOT REMOVE THIS PANEL TO VIEW IT. There is a safety switch that cuts power when the cover is removed and will instantly clear the code. Find the flashing LED. Count the flashes following the longest pause. The code is usually a two digit code and will be read like this example, long pause>1 flash>short pause>2 flashes>long pause. This is code 12. After you have collected the code, write it down and save it for the pro. Turn the power off, wait 30 seconds and turn it back on. It should attempt a restart. In some cases there will be more then one code displayed but it's usually the first one that caused the problem so when you are reading codes look long enough to see that it's only displaying one code.
If you are lucky, your heater will restart but you do have a problem that needs attention.
It should try a restart. It may or may not relight. If it does save that error code you wrote down for the pro when he shows up. After you have cycled the power, you will have cleared errors and the pro won't know where to start to resolve the issue.
If you don't have a LCD display as most warm air furnaces do not, there will be a flashing LED on the main control board. You may have to remove the most front (trim) cover to see this. Then look for a clear plastic sight glass down at the blower compartment. Look through this for a flashing light. DO NOT REMOVE THIS PANEL TO VIEW IT. There is a safety switch that cuts power when the cover is removed and will instantly clear the code. Find the flashing LED. Count the flashes following the longest pause. The code is usually a two digit code and will be read like this example, long pause>1 flash>short pause>2 flashes>long pause. This is code 12. After you have collected the code, write it down and save it for the pro. Turn the power off, wait 30 seconds and turn it back on. It should attempt a restart. In some cases there will be more then one code displayed but it's usually the first one that caused the problem so when you are reading codes look long enough to see that it's only displaying one code.
If you are lucky, your heater will restart but you do have a problem that needs attention.
