All fault codes

Hitachi 01000 fault code

Hitachi air conditioning

What it means

Abnormal rotating numbers (indoor fan speed) (code 10)

The indoor fan is not turning at the commanded speed — a rotation-feedback (rotating-number) abnormality.

Safety: Isolate before working near the fan — it can restart without warning.

UK models this code applies to

From the Hitachi service literature we hold (Hitachi Technical Catalogue §9.10 / §10.1.2 Error Code Information (RAK-PSES(W)/RAC-WSE — Hitachi UK; RAK-PED/RAC-WED — Hitachi R32 catalogue), both render-verified) — not a scraped list.

RAK-18PED / RAC-18WEDRAK-25PED / RAC-25WEDRAK-35PED / RAC-35WEDRAK-50PED / RAC-50WEDRAK-25PSE / RAC-25WSERAK-35PSE / RAC-35WSERAK-50PSE / RAC-50WSEMultizone RAM-33NP2E (3.3 kW, 2 indoors)Multizone RAM-40NP2E (4.0 kW, 2 indoors)Multizone RAM-53NP2E (5.3 kW, 2 indoors)Multizone RAM-53NP3E (5.3 kW, 2–3 indoors)Multizone RAM-68NP3E (6.8 kW, 2–3 indoors)Multizone RAM-70NP4E (7.0 kW, 2–4 indoors)Multizone RAM-90NP5E (8.5 kW, 2–5 indoors)Summit RAK-RPC / RAC-WPC RAC-35WPCSummit RAK-RPC / RAC-WPC RAC-50WPC

Now the harder half: proving what caused it

01000 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.

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