Error : Gas valve energized with no call for heat

[ATJaguarX]

I have a York furnace model #GY8S115C20UH11B

Last week, while in my basement, I noticed the Inducer fan turning on randomly by itself. It would turn on for a few seconds and shut off.

As it's the beginning of heating season, I check to see if my wife had set the thermostat to "Heat". To my surprise, she had not.

I went back down to the basement and checked the error code. Error code #10 - "Gas valve energized with no call for heat. Check gas valve and
gas valve wiring.".

Being a computer techie, my first thought was "reboot it". I turned the furnace off for a few minutes and turned it back on.

About an hour later, I noticed the same thing... Inducer fan randomly running for a few seconds and turning off.

Since the error code mentioned "Gas", I decided to turn the gas valve off. I wanted to be safe and not have the gas leaking right next to my water heater.

I called out a tech to get it diagnosed.

Since the issue was random, the tech couldn't reproduce it. He determined that the gas valve was receiving constant voltage (jumping between 3, 6 and 9 volts) when there was no call for heat. To him this was wrong and proceeded to tell me that the circuit board needed replacement at a cost of $XXX.

The company called back later to gauge my sense of satisfaction. I told them that I was not satisfied with his suggestion as I too often heard "I think" rather then "I know". They offered to send out a senior tech.

The following day, the "senior" tech came out and diagnosed the same problem (circuit board) but for a different reason. Again, the problem couldn't be reproduced. The circuit board did still contain the same error code, but it had only happened twice in a 48 hour period. He told me that he was fine with small current in the system, but thought that the circuit board was giving me a false error code as it said "Gas valve energized" and I had mentioned that I heard the inducer fan running. Again, he wanted to charge me $XXX to replace the board.

Being a computer techie, I figured I could change the board myself. After looking it over, I contacted a HVAC tech that would provide me the board for $XX.

Before I spend the money, I want to be sure that the circuit board is truly the culprit. My concern is, since I've had the gas valve turned off, I haven't seen the error code again (approximately 4 days now). I've also found the following error message for error code 10: "Gas flow with no call for heat. Check gas valve and gas valve wiring.". "Gas flow"... now that scares me (hence why I haven't turned the gas back on to the furnace).

Has anyone else experienced this issue? I don't want to keep calling companies out to diagnose this problem as it costs me $XX - $XX a pop. My thought was to replace the circuit board and watch the error codes.

Thoughts?

Removed Pricing. Read Rules. No pricing, No DIY. Especially on gas systems.This is not the 1st time you have been warned about this.

[silkysean]

What scares me is your are messing with a system your not qualified to service.Thats like me trying to fix computers i may know a little something and in my case worse case i fry computer,etc.In your case you could burn down your house or cause more problems.If you doubt techs then don't do it.But you won't get any D.I.Y HELP HERE.Call a Hvac Professional and let them handle it.That's why we have insurance,schooling,training,etc.

[ATJaguarX]

Don't get me wrong, I'm not looking for DIY help. I'm looking to see if anyone else has seen this error. I'm looking for advice on the error, not advice on installing the board.

Should I take the one companies advice and have the board replaced (even though they contradicted themselves in terms of the reason it needs to be replaced)?

Based on the error code, does it make sense to replace the board?

Should I have another company out and pay for their opinion?

[second opinion]

I have a York furnace model #GY8S115C20UH11B

Last week, while in my basement, I noticed the Inducer fan turning on randomly by itself. It would turn on for a few seconds and shut off.

As it's the beginning of heating season, I check to see if my wife had set the thermostat to "Heat". To my surprise, she had not.

I went back down to the basement and checked the error code. Error code #10 - "Gas valve energized with no call for heat. Check gas valve and
gas valve wiring.".

Being a computer techie, my first thought was "reboot it". I turned the furnace off for a few minutes and turned it back on.

About an hour later, I noticed the same thing... Inducer fan randomly running for a few seconds and turning off.

Since the error code mentioned "Gas", I decided to turn the gas valve off. I wanted to be safe and not have the gas leaking right next to my water heater.

I called out a tech to get it diagnosed.

Since the issue was random, the tech couldn't reproduce it. He determined that the gas valve was receiving constant voltage (jumping between 3, 6 and 9 volts) when there was no call for heat. To him this was wrong and proceeded to tell me that the circuit board needed replacement at a cost of $650.

The company called back later to gauge my sense of satisfaction. I told them that I was not satisfied with his suggestion as I too often heard "I think" rather then "I know". They offered to send out a senior tech.

The following day, the "senior" tech came out and diagnosed the same problem (circuit board) but for a different reason. Again, the problem couldn't be reproduced. The circuit board did still contain the same error code, but it had only happened twice in a 48 hour period. He told me that he was fine with small current in the system, but thought that the circuit board was giving me a false error code as it said "Gas valve energized" and I had mentioned that I heard the inducer fan running. Again, he wanted to charge me $650 to replace the board.

Being a computer techie, I figured I could change the board myself. After looking it over, I contacted a HVAC tech that would provide me the board for $95.

Before I spend the money, I want to be sure that the circuit board is truly the culprit. My concern is, since I've had the gas valve turned off, I haven't seen the error code again (approximately 4 days now). I've also found the following error message for error code 10: "Gas flow with no call for heat. Check gas valve and gas valve wiring.". "Gas flow"... now that scares me (hence why I haven't turned the gas back on to the furnace).

Has anyone else experienced this issue? I don't want to keep calling companies out to diagnose this problem as it costs me $50 - $75 a pop. My thought was to replace the circuit board and watch the error codes.

Thoughts?

a CPU takes input and gives you output