Parts replaced, cause still unknown
What this page tells you: every repair since 2024 and whether anyone found why the part failed.
Facts as recorded by the owner. Root cause not determined. No cause is asserted on this page.
Dates match the timeline. Over two and a half years, many AC parts have been replaced or bypassed so the plant could run again. Each step restored some cooling for a while. None came with a written explanation of why the part failed.
| Date | Work done | Cause found? |
|---|---|---|
| Feb 2024 | ReplacedLoop cleaned and refilled; heat exchangers, actuator valves and solenoids replaced | Debris noted; its source not established |
| Mar–Jul 2024 | ReplacedFlow sensors replaced (units 2 and 1); fan-coil valves freed | Not established |
| Apr–Jun 2025 | ReplacedFan-coil capacitors replaced under the manufacturer’s recall | Recall item |
| Aug 2025 | ReplacedUnit 3 inverter circuit board replaced (photos) | Not established |
| Early 2026 | ReplacedUnit 3 inverter replaced again | Not established |
| 3 Aug 2026 | ReplacedUnit 2 flow sensor bypassed, two fuses replaced; later a new flow meter | Not established |
| 7 Sep 2026 | Whole replacement plant ordered | Root cause not determined |
What we ask for each time a part is replaced
- What failed first, in plain language.
- What contributed: installation, operating conditions, water quality, supply, age.
- What would stop it happening again.
- Who is giving the finding, with a date.
A similar pattern on a separate system (the start batteries) is noted under ownership experience. No link between that event and the AC is suggested.