NIBE 237 fault code

What it means

Short run times for compressor

Compressor stopping after less than 5 minutes. NIBE's own listed cause: incorrect settings for heating and/or hot water. This is a SETTINGS/load problem — not automatically a broken compressor.

UK models this code applies to

From the NIBE service literature we hold (NIBE S2125 installer manual IHB EN 2442-3 731742 — Alarm list) — not a scraped list.

Now the harder half: proving what caused it

237 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.