Question about Heating & Cooling
Hi, Here is a tip that wrote about how to buy heating and air conditioning parts online.
The relay on the circuit board for the inducer is stuck closed....
The reason you have to turn down the t-stat or recycle the power is that for the system to refire the pressure switch must open and then close again, which it does in either of those cases....
To fix the problem you will need to repplace the circuit board....
Check with your dealer for a new board or you can buy it on the internet...
How to find Air Conditioning, Heating and Furnace parts online.
Here is a tip that wrote about how to buy heating and air conditioning parts online.
Posted on Nov 12, 2010
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Posted on Jan 02, 2017
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Dec 15, 2010 | Heating & Cooling
1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution: You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.
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