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- 28 Jan 2004
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We have an Potterton oil boiler with a Selectos burner, it was serviced a few months ago and has worked ok until last week. Now it locks out frequently. We have had it looked at, and the photocell and control box were changed but it continues to lockout. The oilflow to the pump is gravity fed, and lots of it. It might go for 10 minutes or 2 hours. There is nothing in the manual that deals with this problem. What else could the problem be?