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Air Source Heat Pumps (ASHPs)
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30/01/2026 9:32 am
I assume you have checked filters which is a common reason for a range of failure symptoms?
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
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Topic starter
30/01/2026 10:26 am
@ian21stcent Hello. I replaced the soft start on mine about 3 years ago. The only indication I had that the soft start had failed was the fault led. I couldn't find an exact replacement, the new unit had better spec. but was a bit taller which caused slight problem. I'm not on Skye right now so can't tell you what replacement was. I will check email. But I think you have same issue.
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Topic starter
30/01/2026 10:30 am
@ian21stcent Email archive is invaluable. I purchased a CSS-25U Emerson Compressor Soft Starter 25A from Kempston Controls
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