The pressure of the hydrogen generator in the gas chromatograph will not increase

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Dear seniors, this question might not be the right place to ask, but I’m not sure where else to put it. I have been using the Fuli 9792II to analyze the components of mixtures of carbon dioxide and hydrogen gas. Initially, nitrogen was used as the carrier gas, but the peak corresponding to carbon dioxide was very weak; therefore, I changed to using nitrogen as the carrier gas when analyzing hydrogen gas, and hydrogen generated by a hydrogen generator as the carrier gas when analyzing carbon dioxide. I’m facing a problem now: when using hydrogen as the carrier gas, the output pressure remains around 0.12 Mpa and doesn’t increase any further. If the openings through which hydrogen enters the main unit are blocked, the pressure can rise to 0.4. The electrolyte has just been replaced. I tried using hydrogen as an oxidizer, and the pressure reached 0.4. It’s quite troublesome right now; the experiment is in progress, and it’s hard to take measurements without being able to do so\ud83d\ude2d. First, thank you all, fellow sea lovers.