Ideal isar HE35 prob

Robinh · 25 Feb 2012

Hi, display screen showing "-" and burner light on. The manual does not recognise this as a fault indication.
CH and hot water seems to be working ok but CH overheating (pressure going above 3 bar) and losing water from expansion pipe. Any ideas anyone.
Many Thanks

engineerman · 25 Feb 2012

faulty communication lead gives the line and burner light
your filling loop is either passing or left open or prv is knackered

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Ideal isar HE35 prob

Robinh

engineerman

DIYnot Local

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