The inverter raises a TempSensorErr alarm, also listed as Warn0050, when it detects an abnormal temperature reading. The usual causes are poor contact at the temperature sensor's socket connector or a damaged sensor. One manual also lists a sensor reading of -25C as a possible cause. To confirm it, look at the temperature value on the inverter display and check whether it makes sense. Turn the external AC disconnect off and back on to reboot the inverter, and see whether the alarm clears. If the alarm stays after the reboot, contact the manufacturer's service team.
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affectsc1 verified · fact Temperature sensor
tbl=4.r1 h=66f8fb7f8d7etbl=33.r1 h=66f8fb7f8d7etbl=37.r2 h=dc4f47acbe5ftbl=33.r2 h=b4e0065cf5c2tbl=57.r1 h=66f8fb7f8d7etbl=37 h=05f56b96dbactbl=17.r1 h=ff301fa218bdtbl=17.r2 h=498497530e79verified by: review-workflowverified on: 2026-10-20
The sensor involved is the inverter's internal temperature sensor.
tbl=17.r1 h=ff301fa218bdverified by: review-workflowverified on: 2026-10-20review note: support check: partial - u16 mentions an internal temperature sensor with poor contact, but the passage doesn't state the fault affects the inverter beyond raising an alarm.
caused_byc3 verified · fact Poor connector contact
Poor contact at the temperature sensor's socket connector.
tbl=4.r1 h=66f8fb7f8d7etbl=33.r1 h=66f8fb7f8d7etbl=37.r2 h=dc4f47acbe5ftbl=33.r2 h=b4e0065cf5c2tbl=57.r1 h=66f8fb7f8d7etbl=37 h=05f56b96dbactbl=17.r1 h=ff301fa218bdverified by: review-workflowverified on: 2026-10-20
presents_asc4 drafted · lead Abnormal temperature reading
Flagged as the TempSensorErr alarm. One manual lists a sensor reading of -25C as a possible cause.
tbl=4.r1 h=66f8fb7f8d7etbl=33.r1 h=66f8fb7f8d7etbl=33.r2 h=b4e0065cf5c2tbl=57.r1 h=66f8fb7f8d7etbl=37.r1 h=399835b0ff90tbl=37 h=05f56b96dbactbl=17.r1 h=ff301fa218bdtbl=17.r2 h=498497530e79detected_byc5 verified · fact Inverter display check
Check the temperature value shown on the inverter display.
tbl=3.r1 h=a1c35c144b4etbl=4.r1 h=66f8fb7f8d7etbl=32.r1 h=a1c35c144b4etbl=33.r1 h=66f8fb7f8d7etbl=57.r1 h=66f8fb7f8d7etbl=56.r1 h=a1c35c144b4etbl=3 h=a2000b30847etbl=37 h=05f56b96dbactbl=17.r1 h=ff301fa218bdverified by: review-workflowverified on: 2026-10-20
mitigated_byc6 verified · fact Inverter restart
Turn the external AC disconnect (or the working power supply) off and back on to reboot the system.
tbl=3.r1 h=a1c35c144b4etbl=4.r1 h=66f8fb7f8d7etbl=32.r1 h=a1c35c144b4etbl=33.r1 h=66f8fb7f8d7etbl=57.r1 h=66f8fb7f8d7etbl=56.r1 h=a1c35c144b4etbl=3 h=a2000b30847etbl=37 h=05f56b96dbactbl=17.r1 h=ff301fa218bdtbl=17.r2 h=498497530e79verified by: review-workflowverified on: 2026-10-20
c7 verified · fact Contact manufacturer service
Use this step if a reboot does not clear the alarm.
tbl=3.r1 h=a1c35c144b4etbl=32.r1 h=a1c35c144b4etbl=56.r1 h=a1c35c144b4etbl=3 h=a2000b30847etbl=37 h=05f56b96dbactbl=17.r2 h=498497530e79verified by: review-workflowverified on: 2026-10-20
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