The boiler burner will not ignite
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Experts, I have a question: why won’t the gas burner ignite at night? What could be the reason? The fuel used is liquefied natural gas; is it because the temperature is low at night, making liquefaction difficult? Is it still because after a day of burning, the gas in the liquefied gas station has turned into residue and can no longer be vaporized?
The main difference between day and night lies in temperature and humidity. Personally, I think: first, there might be a loose connection (contact when it’s hot, no contact when it’s cold). The second possibility is that there is a deviation in the position of the ignition electrode relative to the gas (high humidity at night). Third is the issue with the flame probe (ion), which cannot detect the flame. (Apart from light sensitivity)
There is a problem with the ultraviolet flame detector
Opel’s pneumatic valves have difficulty opening at low night temperatures, or the opening speed is slow, which results in poor ignition
Temperature has the greatest impact; loose connections are the most likely cause. Next are sensor issues, such as loose or misaligned optical sensors or probes.
Check first whether the boiler electrodes are sparking and whether a flame is generated.