Hi, I have seen quite a few threads about problems with Netaheats, but I haven't seen this exact problem addressed. Apologies if it has and I've missed it.
It's a Netaheat Electronic 6-10. I am going to get it replaced when I have some alterations done in summer, but I was hoping to keep it going until then, to avoid having to pay twice for installation of the new boiler, because it would need to be moved to a newly-built wall.
Problem: when the boiler has been off for a while, that is for an hour or more, it ignites successfully and works normally. But if it has been running within the last hour or so, the main burner often fails to reignite next time it is required. Once it does fail to ignite, I have to turn the boiler off, or turn the programmer or room thermostat off, to prevent it from attempting to ignite, for about an hour. After that, it comes back to life.
The failure sequence is: fan comes on, pilot ignites successfully, main burner never ignites, pilot and fan stay on.
So, I guess it could be the gas valve, which I understand is basically uneconomic to fix, or it could be something else like a PCB component, which might be worth a try. Any opinions?
It's a Netaheat Electronic 6-10. I am going to get it replaced when I have some alterations done in summer, but I was hoping to keep it going until then, to avoid having to pay twice for installation of the new boiler, because it would need to be moved to a newly-built wall.
Problem: when the boiler has been off for a while, that is for an hour or more, it ignites successfully and works normally. But if it has been running within the last hour or so, the main burner often fails to reignite next time it is required. Once it does fail to ignite, I have to turn the boiler off, or turn the programmer or room thermostat off, to prevent it from attempting to ignite, for about an hour. After that, it comes back to life.
The failure sequence is: fan comes on, pilot ignites successfully, main burner never ignites, pilot and fan stay on.
So, I guess it could be the gas valve, which I understand is basically uneconomic to fix, or it could be something else like a PCB component, which might be worth a try. Any opinions?