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why does my glow worm 24xci flash f9?

the pressure is at 1.8 and then the reading changes to a flashing F9 ... why would that be?

Curious, July 2007

home Fix label Heating label_important Home Heating Systemsdone

flashing f9 is a rapid increase in temp picked up by flow + return thermister. can be caused by a faulty pump, pump wrong way round or thermisters incorrectly wire - I'd go with the pump option first

Paul the gas man, July 2007

Fix Fault - Heating

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Fix Fault - Heating

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home Fix label Heating label_important Home Heating Systems

why does my glow worm 24xci flash f9?

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why does my glow worm 24xci flash f9?

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why does my glow worm 24xci flash f9?

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