[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / r / s / t / u / v / vg / vm / vmg / vr / vrpg / vst / w / wg] [i / ic] [r9k / s4s / vip] [cm / hm / lgbt / y] [3 / aco / adv / an / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / pw / qst / sci / soc / sp / tg / toy / trv / tv / vp / vt / wsg / wsr / x / xs] [Settings] [Search] [Mobile] [Home]
Board
Settings Mobile Home
/diy/ - Do It Yourself

Name
Options
Comment
Verification
4chan Pass users can bypass this verification. [Learn More] [Login]
File
  • Please read the Rules and FAQ before posting.

08/21/20New boards added: /vrpg/, /vmg/, /vst/ and /vm/
05/04/17New trial board added: /bant/ - International/Random
10/04/16New board for 4chan Pass users: /vip/ - Very Important Posts
[Hide] [Show All]


[Advertise on 4chan]


I just had a heating and cooling guy come do maintenance on my systems. I have a hydronic heating system, the boiler works fine under normal operation, but the tech said he tested the ignition with the gas cut off to check the safety lockout or whatever it does and it never shut anything down. The igniter just keeps trying to light forever instead of shutting off when no flame is detected. He's saying the whole smart valve has to be replaced to make sure the unit is operating safely. Is it possible the issue is somewhere else, like maybe the flame detector? Is there anything else to check for troubleshooting before changing the expensive valve?
>>
The flame detector is doing its job by not letting the gas stay on when there’s no ignition. But you would test that by leaving the gas on and unplugging the igniter. If his test is ever repeated in a real scenario you’d just cycle your igniter indefinitely, who cares. He’s fishing for parts to get a commission on. With that symptom I wouldn’t worry about it. You’re also a cuck for paying another man to tell you about your equipment
>>
>>2990685
I don't actually know if it tried to turn the gas off. Apparently it didn't if it just let the igniter glow forever trying to ignite the gas. I think the worry is if the coil stayed on for a long period of time with no gas it could burn out, then if then gas somehow came back it might just pump unignited gas into the space? I don't know why that woupd happen, but if it did that could be potentially dangerous?

I just don't know anything about this stuff, man, I never lived in a house with a boiler before. That's why I'm trying to figure out how to verify whatever this guy's problem is and rule out easier solutions or figure out if this is actually even a problem at all.
>>
>>2990653
What this anon said

>>2990685

The dude was forcing that scenario to try to sell you shit. In a real scenario no gas means the thing starts, the pressure sensor sees nothing, then everything turns off and it tries again in a bit. The lockout is what some systems have when their is a failure X times then it locks things out for 10 minutes or whatever. The igniter lighting over and over isn't a concern, but it's also the cheapest part by a mile, so buy 3 of them if you want.
>>
>>2990702
>In a real scenario no gas means the thing starts, the pressure sensor sees nothing, then everything turns off and it tries again in a bit.

That's exactly what it did not do though. That's the concern. What would cause that, and is it critically unsafe?
>>
File: 1943d.jpg (285 KB, 707x978)
285 KB JPG
I asked my gf for you. Don't thank me, thank Elong.
>>
>>2990745
>>2990745
Marry that girl.

I know it's an issue, that's not really what I'm asking. I'm asking if there's maybe a way to handle it without condemning the entire valve. But it's not surprising, all this integrated electronic bullshit is retarded like that. You could have had the card with all that logic on it as a module that clicks in and when it's not behaving correctly you replace just the card, but no, it's all cased up inside the unit so even an electronic failure that doesn't even stop the boiler from functioning requires disconnecting the gas and taking the entire fuckin valve out of the line and replacing it.
>>
>>2990748
Like the AI says, measure it with a multimeter. You can do it just as well with a slightly better multimeter. Youtube has tutorials. If it's the detector, it's a cheap and easy fix. You can also check the wiring for shorts yourself, after you establish that the sensor itself is fine.
>>
>>2990745
This is kind of retarded because a flame sensor literally cannot be in a detecting flame state when there is no flame present.

The control applies AC to the electrode and the AC is rectified to DC current through the flame and flows to ground, the board is able to detect this. A grounded flame sensor will never allow gas to flow. You would need an intricate set up to be able to trick a flame sensor.

There is pretty much 0 chance that you have a dangerous situation. The AI is correct that the control will just stop working instead of failing in an “on” state, it’s very common.
>>
>>2990748
Listen I hear what you’re saying but having it all integrated like that is not a big deal. It keeps it safe from dust and water and simplifies the burner circuit. It’s EXTREMELY simple to replace a residential boiler gas valve, you should honestly replace it yourself if you think it’s an issue. Some supply houses won’t want to sell any combustion related parts to someone without a license/not with a contractor but you can find one that does
>>
>>2990748

the only danger of no flame is unburnt gas.
so yeah, he made your thing dance, but what exactly was the safety issue?
In no scenario created be your guy or normal operation will gas not be ignited immediately when available with the parts you have... i think he's adding unnecessary wear on your equipment, basically abusing your ignitor to try and take your money.
>>
>>2990825
for the record i am not this anon, he's just spot on and im agreeing



[Advertise on 4chan]

Delete Post: [File Only] Style:
[Disable Mobile View / Use Desktop Site]

[Enable Mobile View / Use Mobile Site]

All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.