Fujitsu General A1 fault code

What it means

Discharge temperature error

Discharge temperature has exceeded its limit — check the charge and the metering before condemning the compressor.

Safety: Discharge pipework runs very hot — allow to cool.

UK models this code applies to

From the Fujitsu General service literature we hold (Fujitsu General ASEH07/09/12/14KMCG service manual (official UK webstore), error-code table + troubleshooting; cross-checked against SR_AS092EF_01. All 23 codes verified model-specific 2026-07-16.) — not a scraped list.

Now the harder half: proving what caused it

A1 names a symptom, not a root cause. In the app, the same code opens a guided investigation: what to measure first, the expected values for your exact model, and an honest verdict — including “nothing in this machine is broken” when that's what the readings say.