> For the complete documentation index, see [llms.txt](https://docs.kemperconnect.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kemperconnect.de/reference/error-codes.md).

# Error Codes

This reference documents error and fault codes for all device types in KEMPER Connect.

## Error Code Overview

Devices report error status via dedicated fields:

| Device Type                     | Error Field | Warning Field |
| ------------------------------- | ----------- | ------------- |
| AirDome                         | FEHLERCODE  | WARNING       |
| Clean Air Tower (Self-Cleaning) | FEHLERCODE  | -             |
| Clean Air Tower (Disposable)    | FAULT\_CODE | -             |
| VacuFil 125                     | fault\_code | -             |

A value of **0** indicates no error (system healthy).

## AirDome Error Codes

### Errors (FEHLERCODE)

| Code | Name                         | Description              | Action                               |
| ---- | ---------------------------- | ------------------------ | ------------------------------------ |
| 0    | OK                           | No error                 | None required                        |
| F90  | Frequency inverter error     | Inverter malfunction     | Check power, contact service         |
| F94  | Critical filter pressure     | Filter pressure too high | Check filter, may need replacement   |
| F95  | Control error                | System control issue     | Restart, contact support if persists |
| F96  | Compressed air not connected | No air supply            | Connect compressed air supply        |

### Warnings (WARNING)

| Code | Name                     | Description               | Action                         |
| ---- | ------------------------ | ------------------------- | ------------------------------ |
| 0    | OK                       | No warning                | None required                  |
| SER  | Maintenance overdue      | Service interval exceeded | Schedule maintenance           |
| A03  | Filter pressure too high | Elevated filter pressure  | Monitor, schedule service      |
| A04  | No flow rate calculation | Cannot calculate flow     | Check sensors, contact support |

## Clean Air Tower (Self-Cleaning) Error Codes

### Errors (FEHLERCODE)

| Code | Name                         | Description          | Action                       |
| ---- | ---------------------------- | -------------------- | ---------------------------- |
| 0    | OK                           | No error             | None required                |
| E00  | Frequency inverter error     | Inverter malfunction | Check power, contact service |
| E03  | Compressed air not connected | No air supply        | Connect compressed air       |
| E05  | Control error                | System control issue | Restart, contact support     |

## Clean Air Tower (Disposable) Fault Codes

### Faults (FAULT\_CODE)

| Code | Name                       | Description           | Action                              |
| ---- | -------------------------- | --------------------- | ----------------------------------- |
| 0    | OK                         | No fault              | None required                       |
| E02  | Airflow control error      | Fan/airflow issue     | Check fan, verify no obstructions   |
| E03  | Maintenance required       | Service needed        | Schedule maintenance                |
| E04  | Motor temperature too high | Overheating           | Allow cooling, check ventilation    |
| E07  | Modbus error               | Communication failure | Check connections, restart          |
| E12  | Airflow too low            | Insufficient airflow  | Check for blockages, filter clogged |

## VacuFil 125 Fault Codes

### Faults (fault\_code)

| Code | Name | Description | Action        |
| ---- | ---- | ----------- | ------------- |
| 0    | OK   | No fault    | None required |

Additional codes may be device-specific. Consult device documentation.

## Error Severity

### Critical Errors

Require immediate attention:

* F90/E00: Frequency inverter
* F94: Critical pressure
* E04: Motor overheating

### Warning Errors

Monitor and plan service:

* SER: Maintenance overdue
* A03: Elevated pressure
* E03: Maintenance required

### Communication Errors

May resolve on retry:

* E07: Modbus error
* A04: Calculation failure

## Error Display in UI

### Settings Tab

Each device's Settings tab shows:

* Current error/fault code
* Status message
* "System Healthy" or error description

### Dashboard

When error detected:

* "Service Required" alert
* Red status badge
* Error details available in Settings

### Assets List

Device cards show:

* Error badge on affected devices
* Quick visual identification

## Common Troubleshooting

### Compressed Air Errors (F96, E03)

{% stepper %}
{% step %}

### Verify air supply is connected

Ensure compressed air lines are connected to the device.
{% endstep %}

{% step %}

### Check pressure is adequate

Typical required pressure: 6-8 bar. Verify actual pressure meets requirements.
{% endstep %}

{% step %}

### Inspect air lines for leaks

Look for visible damage or audible leaks and repair as needed.
{% endstep %}

{% step %}

### Ensure filter cleaning system functional

Confirm the filter cleaning/maintenance system is operating correctly.
{% endstep %}
{% endstepper %}

### Motor/Inverter Errors (F90, E00)

{% stepper %}
{% step %}

### Check power supply stable

Verify voltage and supply stability to the device.
{% endstep %}

{% step %}

### Verify no overload condition

Confirm the device isn't overloaded or operating beyond rated capacity.
{% endstep %}

{% step %}

### Inspect electrical connections

Check wiring and connectors for looseness or damage.
{% endstep %}

{% step %}

### Contact service for persistent issues

If the error persists after checks, contact KEMPER service.
{% endstep %}
{% endstepper %}

### Temperature Errors (E04)

{% stepper %}
{% step %}

### Allow motor to cool down

Stop operation to let the motor reach safe temperature.
{% endstep %}

{% step %}

### Reduce continuous operation time

Limit long continuous runs to avoid overheating.
{% endstep %}

{% step %}

### Check ventilation around motor

Ensure adequate airflow and no obstructions to ventilation.
{% endstep %}

{% step %}

### Reduce boost mode usage

Minimize use of high-power/boost modes that increase heat.
{% endstep %}

{% step %}

### Contact service if recurring

If overheating returns, contact KEMPER service.
{% endstep %}
{% endstepper %}

### Airflow Errors (E02, E12)

{% stepper %}
{% step %}

### Check for physical obstructions

Inspect ducts, intakes, and outlets for blockages.
{% endstep %}

{% step %}

### Inspect filter condition

Look for clogged or damaged filters; replace if necessary.
{% endstep %}

{% step %}

### Verify fan operation

Confirm the fan runs and operates at expected speed.
{% endstep %}

{% step %}

### Replace filter if clogged

If cleaning doesn't restore flow, install a new filter.
{% endstep %}
{% endstepper %}

### Communication Errors (E07)

{% stepper %}
{% step %}

### Check cable connections

Ensure communication cables are connected and undamaged.
{% endstep %}

{% step %}

### Verify device powered properly

Confirm the device has stable power and is turned on.
{% endstep %}

{% step %}

### Restart device

Power-cycle the device to attempt to clear transient communication faults.
{% endstep %}

{% step %}

### Contact support if persists

If communication doesn't recover, contact KEMPER support.
{% endstep %}
{% endstepper %}

## Service Contact

For unresolved errors:

* Contact KEMPER service
* Provide error code and device serial
* Describe symptoms and troubleshooting attempted

## Related Documentation

* [AirDome Settings](file:///6726661/asset-types/airdome/settings.md)
* [Clean Air Tower (Self-Cleaning) Settings](file:///6726661/asset-types/clean-air-tower-abreinigbar/settings.md)
* [Clean Air Tower (Disposable) Settings](file:///6726661/asset-types/clean-air-tower-einweg/settings.md)
* [VacuFil 125 Settings](file:///6726661/asset-types/vacufil-125/settings.md)
* [Service Monitoring](file:///6726661/monitoring/service/overview.md)


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