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  1. H

    needle one bar off the red on my Saunier Duval Thema F23E

    Many thanks for reply - I will have to get a boiler engineer to do this and was wondering what a boiler engineer would charge. I can't do it myself
  2. H

    needle one bar off the red on my Saunier Duval Thema F23E

    Thanks for replies - any idea whether this is a simple job, or is it expensive
  3. H

    needle one bar off the red on my Saunier Duval Thema F23E

    The boiler was working fine until I had it serviced last winter. The engineer said to call him if the needle went into a red zone. It did and I called him again and he drained some water off and said if it happened again it would be expensive!. It did go into the red zone so I called another...
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