Solar Lattice

Fault codes › CPS › CPS SCA36KTL-DO/US-480

CPS SCA36KTL ExtFanErr

Code
ExtFanErr
Vendor severity
Warning
Page
3
ID
fc:chint-sca-36ktl-extfanerr
IRI
https://solarlattice.org/kb/fc/chint-sca-36ktl-extfanerr
Status
active
Also known as
ExtFanErr, extfanerr, CPS ExtFanErr
Category
Inverters
Class warning drafted · lead
Production not stated
Clears by itself verified · fact

Decoded

May indicate fan failure; look at cooling fan; confirm with fan supply voltage measurement, visual inspection; do: fan replacement, inverter replacement, contact manufacturer service.

Defined in

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

Same code in other families

Claims

defined_in

c1 drafted · lead CPS-SCA36-50-60KTL fault and troubleshooting

has_event_class

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

from the Type column

indicates

c3 drafted · lead Fan failure

affects

c4 drafted · lead Cooling fan

detected_by

c5 drafted · lead Fan supply voltage measurement

When fan is not spinning; low supply voltage points to inverter, adequate voltage to fan.

c6 drafted · lead Visual inspection

Check fan blades for foreign objects.

mitigated_by

c7 drafted · lead Fan replacement

When fan stopped and supply voltage is adequate.

c8 drafted · lead Inverter replacement

When fan spins (sensing fault) or fan supply voltage is low.

c9 verified · fact Contact manufacturer service

verified by: joshuahamsaverified on: 2026-10-20

has_recovery

c10 verified · fact Auto-reset (clears by itself)

Alarm may clear on its own; escalate to cleaning blades, AC power cycle, then service.

verified by: joshuahamsaverified on: 2026-10-20

applies_to

c11 drafted · lead CPS SCA36KTL-DO/US-480

Data