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Fault codes › Yaskawa Solectria › Solectria PVI 23/28/36TL

Yaskawa Solectria PVI-TL IsolationErr

Code
IsolationErr
Shown as
DC insulation impedance to ground
Vendor severity
Protection
Page
54
ID
fc:yaskawa-solectria-pvi-23-36tl-isolationerr
IRI
https://solarlattice.org/kb/fc/yaskawa-solectria-pvi-23-36tl-isolationerr
Status
active
Also known as
IsolationErr, isolationerr, Yaskawa Solectria IsolationErr, DC insulation impedance to ground
Category
Inverters
Class fault drafted · lead
Production not stated
Clears needs service verified · fact

Decoded

Reports low insulation resistance; look at PV array; confirm with fault localization; do: contact system installer.

What can be behind Low insulation resistance

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-166-175-TL E025, ABB / FIMER PVS-166-175-TL E037, ABB / FIMER PVS-60-TL E025, ABB / FIMER PVS-60-TL E037, ABB / FIMER TRIO-20.0-27.6-TL E025, ABB / FIMER TRIO-20.0-27.6-TL E037, ABB / FIMER UNO-DM-3.3-5.0-PLUS E025, ABB / FIMER UNO-DM-6.0-PLUS E025
CPS
CPS SCA25KTL-208 IsolationErr, CPS SCA25KTL-480 IsolationErr, CPS SCA36KTL IsolationErr, CPS SCA50-100K-T Protect0190, CPS SCA50-60KTL IsolationErr, CPS SCH100-125KTL IsolationErr, CPS SCH125KTL-AIO IsolationErr, CPS SCH200-250K-T IsolationErr, CPS SCH275KTL IsolationErr, CPS SCH350KTL IsolationErr
Canadian Solar
Canadian Solar 125K-T600GL02 PV ISO-PRO 01/02, Canadian Solar 125K-T600GL02 PV-MID-ISO, Canadian Solar 185-255K PV ISO-PRO 01/02, Canadian Solar 23-28KTL-CT IsolationErr, Canadian Solar 25-40K-T480GL01 PV ISO-PRO 01/02, Canadian Solar 50-66K-T480GL01 PV ISO-PRO 01/02, Canadian Solar 75-100K-T480GL02 PV ISO-PRO 01/02
Enphase
Enphase IQ7 DC Resistance Low - Power Off, Enphase IQ8 DC Resistance Low - Power Off, Enphase IQ9N DC Resistance Low - Power Off, Enphase M215-M250 DC Resistance Low - Power Off
Fronius
Fronius Galvo 502, Fronius Primo 447, Fronius Primo 502, Fronius Symo 447, Fronius Symo 502
Huawei
Huawei SUN2000-100KTL-USH0 2062, Huawei SUN2000-25-30KTL-US 313, Huawei SUN2000-45KTL-US-HV-D0 313
KACO new energy
KACO new energy blueplanet TL3 181, KACO new energy blueplanet TL3 182, KACO new energy blueplanet TL3 183
SMA
SMA SB-US-40 3501, SMA SB-US-41 3501, SMA SBSE-US-50 3501, SMA PEAK3-US 3501, SMA CORE1-US 3501, SMA STP-TL-US 3501, SMA STP-X-US 3501, SMA SC-CP-XT 3501, SMA SC-CP-XT 3504, SMA SC-CP-XT 3510, SMA SC-CP-XT 3511
Schneider Electric
Schneider Electric CL125 039, Schneider Electric CL125 055
Solis
Solis 1P-4G-US PV ISO-PRO 01/02, Solis 3P-5G-US PV ISO-PRO 01/02, Solis RHI-1P-HV PV ISO-PRO 01/02, Solis S5-GC PV ISO-PRO 01/02, Solis S6-EH1P PV ISO-PRO 01/02, Solis S6-GC PV ISO-PRO 01/02, Solis S6-GU PV ISO-PRO 01/02
Sungrow
Sungrow SG-CX-US 039, Sungrow SG200HX 039, Sungrow SG250HX 39, Sungrow SG350HX 039
Yaskawa Solectria
Yaskawa Solectria PVI-25TL-R IsolationErr

Same code in other families

Claims

defined_in

c1 drafted · lead PVI 23-28TL

has_event_class

c2 drafted · lead Fault (device stops or needs intervention)

from the Type column

reports

c3 drafted · lead Low insulation resistance

affects

c4 drafted · lead PV array

review note: support check: partial - The passage troubleshoots PV strings and wiring leakage, implying the PV array, but never states the alarm affects the PV array.

detected_by

c5 drafted · lead Fault localization

String-by-string isolation to find leakage to earth.

mitigated_by

c6 drafted · lead Contact system installer

has_recovery

c7 verified · fact Service required

Installer must inspect installation for ground fault

verified by: review-workflowverified on: 2026-10-20review note: support check: partial - Row lists observing for auto-clear first, then service; installer inspection is stated but the clearing is not purely service-required.

applies_to

c8 drafted · lead Solectria PVI 23-36TL

Data