Roundtuit Posted November 18, 2023 Share Posted November 18, 2023 I've just returned home from a few days away and found the ashp has stopped due to a low pressure fault. I've re-pressuried so it's running, but the cause appears to be a steady drip from the air purger (centre in the picture). Any advice on cause or fix pls? Easy to replace? (Hitachi Yutaki split system). Link to comment Share on other sites More sharing options...
Beelbeebub Posted November 18, 2023 Share Posted November 18, 2023 It's a standard component (though I have not seen one with the hose outlet before), any plumber should be able to swap it out for you. If you are a competent diyer you should be able to do it, just need some spanners and PTFE tape. Link to comment Share on other sites More sharing options...
Roundtuit Posted November 18, 2023 Author Share Posted November 18, 2023 Cheers. I'll diy it if possible. There's nothing to get a spanner on to, so I'm guessing grips is the way forward. Link to comment Share on other sites More sharing options...
dpmiller Posted November 18, 2023 Share Posted November 18, 2023 short term you could just screw a car valve cap onto the outlet? 1 Link to comment Share on other sites More sharing options...
Beelbeebub Posted November 18, 2023 Share Posted November 18, 2023 3 minutes ago, dpmiller said: short term you could just screw a car valve cap onto the outlet? I've never met an automatic air valve that didn't eventually leak In a sealed system they are only needed initially when the system is filled and for the first few cycles when any dissolved gasses come out of solution. So I either fit a manual valve and just bleed it a few times over the "break in" period. Or I fit an automatic valve and then screw the cap closed after the break in period. 3 Link to comment Share on other sites More sharing options...
Roundtuit Posted November 15 Author Share Posted November 15 So, 12 months on, the over-priced Hitachi-approved replacement part has failed and I'm back to square one. Before I get stroppy with the supplier, is there any potential underlying cause of failure I need to investigate? Link to comment Share on other sites More sharing options...
JohnMo Posted November 15 Share Posted November 15 Just swop it out for one with a manual isolation screw. Instead of an always open tube. Something like one of these https://www.monsterplumb.co.uk/auto-bottle-air-vent-1-2-top-vent 1 Link to comment Share on other sites More sharing options...
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