Fault codes › CPS › CPS SCH275KTL-DO/US-800

CPS SCH275KTL ExtFanErr

Code: ExtFanErr
Vendor severity: Alarm
Page: 70
ID: fc:chint-sch-275ktl-extfanerr
IRI: https://solarlattice.org/kb/fc/chint-sch-275ktl-extfanerr
Status: active
Also known as: ExtFanErr, extfanerr, CPS ExtFanErr
Category: Inverters

Class warning drafted · lead

Production not stated

Clears by itself drafted · lead

Decoded

Reports fan fault alarm; may indicate fan failure; look at cooling fan; confirm with visual inspection; do: clear ventilation blockage.

What can be behind Fan fault alarm

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

Fan failure drafted · lead

Defined in

CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 — CPS (Chint Power Systems) · page 70 drafted · lead
- tbl=24.r4 h=8c0f6b926ff4
- tbl=24.r5 h=de5bc765d628
- tbl=24.r6 h=3c31a0a6c5b8

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

Same condition on other equipment

ABB / FIMER: ABB / FIMER PVS-60-TL W010, ABB / FIMER TRIO-20.0-27.6-TL W010, ABB / FIMER UNO-DM-3.3-5.0-PLUS W010, ABB / FIMER UNO-DM-6.0-PLUS W010
CPS: CPS SCA25KTL-208 ExtFanErr, CPS SCA25KTL-480 ExtFanErr, CPS SCA25KTL-480 IntFanErr, CPS SCA50-100K-T Warn0000, CPS SCA50-100K-T Warn0010, CPS SCH100-125KTL ExtFanErr, CPS SCH100-125KTL IntFanErr, CPS SCH125KTL-AIO ExtFanErr, CPS SCH200-250K-T ExtFanErr, CPS SCH200-250K-T IntFanErr, CPS SCH275KTL IntFanErr, CPS SCH350KTL ExtFanErr, CPS SCH350KTL IntFanErr, CPS SCH350KTL Warn0080
Canadian Solar: Canadian Solar 23-28KTL-CT ExtFanErr
Fronius: Fronius Symo 326, Fronius Symo 327
KACO new energy: KACO new energy blueplanet TL3 187, KACO new energy blueplanet TL3 70, KACO new energy blueplanet TL3 71, KACO new energy blueplanet TL3 72
SMA: SMA STP-TL-US 7508, SMA SC-CP-XT 7507
Schneider Electric: Schneider Electric CL125 070
Solis: Solis S6-EH2P Fan Alarm, Solis S6-EH3P30-60K Fan Alarm, Solis S6-EH3P75-150K Fan Alarm
Sungrow: Sungrow SG-CX-US 070
Yaskawa Solectria: Yaskawa Solectria PVI-14-20TL ExtFanErr, Yaskawa Solectria PVI-14-20TL IntFanErr, Yaskawa Solectria PVI-25TL-R IntFanErr, Yaskawa Solectria PVI-TL ExtFanErr, Yaskawa Solectria PVI-TL IntFanErr

Same code in other families

Claims

`defined_in`

c1 drafted · lead CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7

CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r4 h=8c0f6b926ff4
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r5 h=de5bc765d628
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r6 h=3c31a0a6c5b8

`has_event_class`

c2 drafted · lead Warning (device continues, a condition is flagged)

from the table header

CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r4 h=8c0f6b926ff4
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r5 h=de5bc765d628
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r6 h=3c31a0a6c5b8
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24 h=943e21608be7

`reports`

c3 drafted · lead Fan fault alarm

CPS SCH100-125KTL-DO-US-600-480 User Manual Rev 1.9 tbl=32.r4 h=8c0f6b926ff4
CPS SCA25KTL-DO-US-208 User Manual Rev 1.2 tbl=49.r5 h=ae858ba47931
CPS 25kW User Manual Rev 2.1 tbl=55.r2 h=584b5f831617
CPS SCH125KTL-AIO-US-600 Sep 2020 tbl=29.r4 h=4cd041ad8268
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r4 h=8c0f6b926ff4
CPS SCH350KTL-DO-US-800 User Manual Rev 2.2 tbl=33.r3 h=36fdb08d72c6

`indicates`

c4 drafted · lead Fan failure

CPS SCH100-125KTL-DO-US-600-480 User Manual Rev 1.9 tbl=32.r4 h=8c0f6b926ff4
CPS SCA25KTL-DO-US-208 User Manual Rev 1.2 tbl=49.r5 h=ae858ba47931
CPS 25kW User Manual Rev 2.1 tbl=55.r2 h=584b5f831617
CPS SCH125KTL-AIO-US-600 Sep 2020 tbl=29.r4 h=4cd041ad8268
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r4 h=8c0f6b926ff4
CPS SCH200-250K-T-US User Manual Aug 2026 tbl=41.r3 h=b6a4aedbecdc
CPS SCH350KTL-DO-US-800 User Manual Rev 2.2 tbl=33.r3 h=36fdb08d72c6

`affects`

c5 drafted · lead Cooling fan

Blocked fan, expired fan life or poor fan connector contact

CPS SCH100-125KTL-DO-US-600-480 User Manual Rev 1.9 tbl=32.r4 h=8c0f6b926ff4
CPS SCH100-125KTL-DO-US-600-480 User Manual Rev 1.9 tbl=32.r5 h=a6f5a7f3b418
CPS SCA25KTL-DO-US-208 User Manual Rev 1.2 tbl=49.r5 h=ae858ba47931
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r5 h=de5bc765d628

`detected_by`

c6 drafted · lead Visual inspection

Inspect fan blades for foreign objects

CPS SCH100-125KTL-DO-US-600-480 User Manual Rev 1.9 tbl=32.r4 h=8c0f6b926ff4
CPS SCH100-125KTL-DO-US-600-480 User Manual Rev 1.9 tbl=33.r1 h=88a6b2c8e9ab
CPS SCA25KTL-DO-US-208 User Manual Rev 1.2 tbl=49.r6 h=d7a7d9244d6b
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r6 h=3c31a0a6c5b8
CPS SCH350KTL-DO-US-800 User Manual Rev 2.2 tbl=33.r3 h=36fdb08d72c6

`mitigated_by`

c7 drafted · lead Clear ventilation blockage

Remove foreign objects from fan blades

CPS SCH100-125KTL-DO-US-600-480 User Manual Rev 1.9 tbl=33.r1 h=88a6b2c8e9ab
CPS SCA25KTL-DO-US-208 User Manual Rev 1.2 tbl=49.r6 h=d7a7d9244d6b
CPS 25kW User Manual Rev 2.1 tbl=55.r3 h=1891a9940aaf
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r6 h=3c31a0a6c5b8
CPS SCH200-250K-T-US User Manual Aug 2026 tbl=41.r3 h=b6a4aedbecdc
CPS SCH350KTL-DO-US-800 User Manual Rev 2.2 tbl=33.r3 h=36fdb08d72c6

review note: support check: partial - Checking for foreign objects on fan blades is recommended, but removal and clearing the blockage are only implied.

`has_recovery`

c8 drafted · lead Auto-reset (clears by itself)

First observe for self-clearing; then blade check, reboot, then service

CPS SCH100-125KTL-DO-US-600-480 User Manual Rev 1.9 tbl=33.r1 h=88a6b2c8e9ab
CPS SCA25KTL-DO-US-208 User Manual Rev 1.2 tbl=49.r5 h=ae858ba47931
CPS 25kW User Manual Rev 2.1 tbl=55.r3 h=1891a9940aaf
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r6 h=3c31a0a6c5b8
CPS SCH200-250K-T-US User Manual Aug 2026 tbl=41.r3 h=b6a4aedbecdc
CPS SCH350KTL-DO-US-800 User Manual Rev 2.2 tbl=33.r3 h=36fdb08d72c6

`applies_to`

c9 drafted · lead CPS SCH275KTL-DO/US-800

CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r4 h=8c0f6b926ff4
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r5 h=de5bc765d628
CPS SCH275KTL-DO-US-800 V2 User Manual Rev 1.7 tbl=24.r6 h=3c31a0a6c5b8

CPS SCH275KTL ExtFanErr

Decoded

What can be behind Fan fault alarm

Defined in

Same condition on other equipment

Same code in other families

Claims

defined_in

has_event_class

reports

indicates

affects

detected_by

mitigated_by

has_recovery

applies_to

Data