I have a boiler with a fenwal ignition module. HSI. It locks out intermittently. I get 24v to valve and no flame. After 3 tries it locks out. Then an hour later it'll try again. Then it'll start working again. I don't know how often it locks out but when it's really cold out I'll notice it more. As recommended I changed the gas valve but it still happens. Thanks for your help
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