Bosch Mini Split Error Codes
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- E0 — E0 means an indoor unit EEPROM parameter error on Bosch Climate 5000 systems - the in
- E1 — E1 means a communication error between the indoor and outdoor units on Bosch Climate
- E3 — E3 means an indoor fan speed error on Bosch Climate 5000 systems - the indoor fan did
- E4 — E4 means an indoor return-air temperature sensor error on Bosch Climate 5000 systems
- F0 — F0 means outdoor current overload sensed on Bosch Climate 5000 systems - the current-
- F6 — F6 means an indoor coil outlet temperature sensor error on Bosch Climate 5000 Gen 2 /
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Safe checks with an external tool or supply
These pages list the check you can do from outside the unit, with an optional external tool or maintenance supply. None of them repair an internal fault.
- E0 — E0 means an indoor unit EEPROM parameter error on Bosch Climate 5000 systems - the indoor (or outdoor) PCB mai…
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E codes
- Bosch E0 error code
E0 means an indoor unit EEPROM parameter error on Bosch Climate 5000 systems - the indoor (or outdoor) PCB main chip is not receiving valid feedback f… - Bosch E1 error code
E1 means a communication error between the indoor and outdoor units on Bosch Climate 5000 systems - the indoor control received no feedback from the o… - Bosch E3 error code
E3 means an indoor fan speed error on Bosch Climate 5000 systems - the indoor fan did not run at the speed the control expected, so the system stops t… - Bosch E4 error code
E4 means an indoor return-air temperature sensor error on Bosch Climate 5000 systems - the room temperature thermistor (T1) circuit is reading outside… - Bosch E5 error code
E5 means an indoor coil temperature sensor error on Bosch Climate 5000 Gen 2 / legacy single-zone systems - the evaporator (T2) thermistor is open, sh…
F codes
- Bosch F0 error code
F0 means outdoor current overload sensed on Bosch Climate 5000 systems - the current-detection circuit saw an abnormal current rise, often from a powe… - Bosch F1 error code
F1 on a Bosch Climate 5000 Gen 2 single-zone system means an outdoor ambient temperature sensor error - the T4 thermistor is open, shorted, or drifted… - Bosch F2 error code
F2 on a Bosch Climate 5000 Gen 2 single-zone system means an outdoor coil temperature sensor error - the condenser (T3) thermistor is open, shorted, o… - Bosch F3 error code
F3 on a Bosch Climate 5000 Gen 2 single-zone system means a compressor discharge temperature sensor error - the discharge (T5/Tp) thermistor is open, … - Bosch F4 error code
F4 means an outdoor unit EEPROM parameter error on Bosch Climate 5000 Gen 2 systems - the outdoor (or indoor) main chip is not getting a valid respons… - Bosch F5 error code
F5 on a Bosch Climate 5000 Gen 2 single-zone system means an outdoor unit fan speed error - the outdoor fan is not moving at the speed the control exp… - Bosch F6 error code
F6 means an indoor coil outlet temperature sensor error on Bosch Climate 5000 Gen 2 / legacy single-zone systems - the T2B evaporator coil outlet ther…
P codes
- Bosch P0 error code
P0 on a Bosch Climate 5000 Gen 2 single-zone system is an inverter module (IPM) error - the power electronics driving the compressor report a fault an… - Bosch P1 error code
P1 on a Bosch Climate 5000 Gen 2 single-zone system means high or low voltage protection - the unit detected supply voltage or current outside its saf… - Bosch P3 error code
P3 means outdoor unit low-temperature lockout on Bosch Climate 5000 Gen 2 / legacy single-zone systems - a 4-flash protective code: the outdoor unit d… - Bosch P4 error code
P4 means an inverter compressor drive error on Bosch Climate 5000 systems - the drive's detection circuit saw abnormal feedback (communication, voltag… - Bosch P5 error code
P5 means a mode conflict on Bosch Climate 5000 systems (6 flash) - connected indoor units are asking for incompatible operation, such as heating in on…