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Fault codes › ABB / FIMER › UNO-DM-3.3/3.8/4.6/5.0-TL-PLUS-US

ABB / FIMER UNO-DM-3.3-5.0-PLUS W027

Code
W027
Shown as
Latch-Manual reset
Vendor severity
Warning
Page
128
ID
fc:abb-uno-dm-3-3-5-0-plus-us-w27
IRI
https://solarlattice.org/kb/fc/abb-uno-dm-3-3-5-0-plus-us-w27
Status
active
Also known as
W027, w27, ABB / FIMER W027, Latch-Manual reset
Category
Inverters
Class warning drafted · lead
Production unaffected drafted · lead
Clears not stated

Decoded

Reports latched alarm reset.

What can be behind Latched alarm reset

Failure modes that present as the reported condition, and the tests that tell them apart.

Defined in

The manufacturer's own cause and corrective text is not reproduced here.

Same condition on other equipment

ABB / FIMER
ABB / FIMER PVS-60-TL W027, ABB / FIMER UNO-DM-6.0-PLUS W027

Same code in other families

Claims

defined_in

c1 drafted · lead FIMER UNO-DM-3.3-5.0-TL-PLUS-US-Q Product Manual RevB

c2 drafted · lead UNO-DM-3.3-5.0-TL-PLUS-US Product Manual RevA

has_event_class

c3 drafted · lead Warning (device continues, a condition is flagged)

from the code prefix

reports

c4 verified · fact Latched alarm reset

verified by: review-workflowverified on: 2026-10-23review note: support check: partial - W027 is a latch alarm manual reset event, not an error; 'reports latched alarm reset' fits, though it is a…

has_production_effect

c5 drafted · lead No production effect

Operator action that is only logged in the event history; not an error.

applies_to

c6 drafted · lead UNO-DM-3.3/3.8/4.6/5.0-TL-PLUS-US string inverter

Data