Eliwell bt n

Critical

IDPlus 902/961/971/974 — Stores the out-of-range dwell time of the Pb3 value during a blackout (bOt); value is 0 if Pb3 stayed within range, non-zero if it went out of range (n=1...8)

Eliwell bt n: Stores the out-of-range dwell time of the Pb3 value during a blackout (bOt); value is 0 if Pb3 stayed within range, non-zero if it went out of range (n=1...8) This fault typically halts operation and needs immediate attention.

Possible causes

Extended power outage caused temperature in the monitored area (Pb3) to rise outside the permitted HACCP range
No backup power or battery buffering present for critical refrigeration application

Check steps

Check the value in the bt n folder: if non-zero, assess the affected product for spoilage/safety per HACCP guidelines
Review power supply/backup power strategy for critical cold chains; clear log via rES

Affected parts

Pb3 probu
yedek güç kaynağı (UPS, jeneratör)

Safety note

General safety note: switch off power before working on the device. If product safety is in doubt, follow HACCP procedures.

Source: Eliwell resmi servis kilavuzu (bagimsiz cift-dogrulandi) — Eliwell IDPlus 902/961/971/974 — Electronic controllers for refrigeration units, User/Installer Manual (doc. code 9IS54157, also seen with rel. 07/11 and later 03/16 revisions; content identical in ALARMS table), p.17, ALARMS table: "bt n | Pb3 out-of-range dwell time during bOt | Stores the out-of-range dwell time of…

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

Look up in Enthalio →

Related fault codes

Probe 3 (Pb3) faulty — measured value outside E3 Over Heating alarm — Pb3 value has exceeded thCOH General pressure switch alarm — pressure alarmnPA General pressure switch alarm (critical) — numPAL Logs the Max/Min value recorded by Pb3 when itHC n Stores the dwell time of the Pb3 value outsidetC n