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Klimaire KSIE inverter wall mount Error Codes
Newer Klimaire lines show different code sets. Check the series on the indoor unit label before using this table.
| Code | Meaning | What to check |
|---|---|---|
| E0 | Indoor unit EEPROM parameter error (Operation lamp 1 flash, Timer off). | Indoor control board. |
| E1 | Indoor/outdoor communication error (2 flashes, Timer off). | Interconnect wiring, terminal screws, power at the outdoor unit. How to fix → |
| E2 | Zero-crossing signal detection error (3 flashes, Timer off). | |
| E3 | Indoor fan speed out of control (4 flashes, Timer off). | Indoor fan motor, blower wheel binding, connector. |
| E4 | Indoor room temperature sensor T1 open or shorted (5 flashes, Timer off). | Measure the sensor; check the connector. How to fix → |
| E5 | Evaporator coil temperature sensor T2 open or shorted (6 flashes, Timer off). | Measure the sensor; check the connector. How to fix → |
| EC | Refrigerant leak detected (7 flashes, Timer off). | Leak search, starting at the flare connections. How to fix → |
| F0 | Overload current protection (1 flash, Timer on). | |
| F1 | Outdoor ambient temperature sensor T4 open or shorted (2 flashes, Timer on). | Measure the sensor; check the connector. How to fix → |
| F2 | Condenser coil temperature sensor T3 open or shorted (3 flashes, Timer on). | Measure the sensor; check the connector. How to fix → |
| F3 | Compressor discharge temperature sensor T5 open or shorted (4 flashes, Timer on). | Measure the sensor; check the connector. How to fix → |
| F4 | Outdoor unit EEPROM parameter error (5 flashes, Timer on). | Outdoor control board. |
| F5 | Outdoor fan speed out of control (6 flashes, Timer on). | Outdoor fan motor, obstruction, connector. |
| P0 | IPM malfunction or IGBT over-strong current protection (1 flash, Timer flashing). | Inverter board and compressor. How to fix → |
| P1 | Over voltage or low voltage protection (2 flashes, Timer flashing). | Supply voltage under load and connections. How to fix → |
| P2 | Compressor top high temperature protection, 9k and 12k models (3 flashes, Timer flashing). | Charge, outdoor airflow, dirty coil. |
| P3 | Outdoor ambient temperature too low (4 flashes, Timer flashing). | |
| P4 | Inverter compressor drive error (5 flashes, Timer flashing). | Compressor wiring, inverter board. How to fix → |
| P5 | Indoor units mode conflict, multi-zone only (6 flashes, Timer flashing). Not a failure. |
How to read the codes
- E codes: Operation lamp flashes, Timer lamp off. F codes: Operation lamp flashes, Timer lamp on. P codes: both lamps flash.
- Count the Operation lamp flashes and match them with the Timer lamp state in the 'flashes' column.
Codes point to a circuit, not a part. Test before replacing boards or sensors. Inverter boards hold a dangerous charge after power-off; wait and verify DC bus voltage is gone before touching them. Refrigerant work requires EPA 608 certification.
Source: Klimaire KSIE troubleshooting guide (2016), 9.1 Indoor Unit Error Display. The "meaning" column follows the manufacturer's wording; "what to check" is our field summary. Always go by the label on the furnace you're working on.
Related
- Mini-split communication error troubleshooting
- Mini-split flare connections (the usual leak point)
- Look up any mini-split code
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