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Ideal/ISAR boiler showing 3 lines?

Just came home from holidays to find the boiler not working. Initially was showing L9, but then changed to 3 lines. Pressure is at 1 bar.

caps
November 2010
Heating, Home Heating SystemsShowing Working Changed
either pump has failed or dry fire thermistor on top of casting has got wet due to failure of seal or is faulty

gary
November 2010

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