Brand: VELUX
Category: Control Systems
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Manual for KFX 210 - Troubleshooting and error codes + PDF Download
Uploaded: April 8, 2025, 1:52 p.m.
Manual Publish Date: 2019-11-11
Warranty Summary
No warranty information provided in this manual.
Break-glass point: In case of fire, break the glass and press the red button. All windows will open. Red light and alarm will activate.
Ventilation buttons: Top button opens window to comfort ventilation position. Bottom button closes the window. Stop button or pressing both top and bottom buttons stops window movement.
Error signals: Yellow light indicates system errors like cable issues, defective batteries, or component malfunction.
Green light: Indicates normal operation.
Troubleshooting and error codes
| Status LED | Problem | Description |
|---|---|---|
| Green (OPERATION) | Normal Operation | System is operating normally. |
| Yellow (MAINTENANCE) | Maintenance Due | Inspection period exceeded (15 months). |
| Yellow (PSU1 OK/PSU2 OK) Off | Power Supply Interrupted | 230V mains supply interrupted, running on battery. |
| Yellow (BATTERY) On | Battery Issue | Batteries not connected, defective, or 25A fuse defective. |
| Yellow (ERROR - MOTOR 1/2) Flashing | Motor Cable Interrupted | Cable to motor terminal 1 or 2 is interrupted. |
| Yellow (ERROR - MOTOR 1/2) On | Motor Cable Short-Circuited | Cable to motor terminal 1 or 2 is short-circuited. |
| Yellow (ERROR - SMOKE DET.) Flashing | Smoke Detector Cable Interrupted | Cable to smoke detector(s) is interrupted. |
| Yellow (ERROR - SMOKE DET.) On | Smoke Detector Cable Short-Circuited | Cable to smoke detector(s) is short-circuited. |
| Yellow (ERROR - BREAK GLASS) Flashing | Break-Glass Point Cable Interrupted | Cable to break-glass point(s) is interrupted. |
| Yellow (ERROR - BREAK GLASS) On | Break-Glass Point Cable Short-Circuited | Cable to break-glass point(s) is short-circuited. |
| Yellow (ERROR - TEMP. FUSE) On | Temperature Fuse Activated | Temperature in control unit is above 70°C. |
| Red (ALARM ACTIVE) On | Alarm Active | Smoke ventilation function is activated. |
Troubleshooting and error codes
| Status LED | Problem | Description |
|---|---|---|
| Green (OPERATION) | Normal Operation | System is operating normally. |
| Yellow (MAINTENANCE) | Maintenance Due | Inspection period exceeded (15 months). |
| Yellow (PSU1 OK/PSU2 OK) Off | Power Supply Interrupted | 230V mains supply interrupted, running on battery. |
| Yellow (BATTERY) On | Battery Issue | Batteries not connected, defective, or 25A fuse defective. |
| Yellow (ERROR - MOTOR 1/2) Flashing | Motor Cable Interrupted | Cable to motor terminal 1 or 2 is interrupted. |
| Yellow (ERROR - MOTOR 1/2) On | Motor Cable Short-Circuited | Cable to motor terminal 1 or 2 is short-circuited. |
| Yellow (ERROR - SMOKE DET.) Flashing | Smoke Detector Cable Interrupted | Cable to smoke detector(s) is interrupted. |
| Yellow (ERROR - SMOKE DET.) On | Smoke Detector Cable Short-Circuited | Cable to smoke detector(s) is short-circuited. |
| Yellow (ERROR - BREAK GLASS) Flashing | Break-Glass Point Cable Interrupted | Cable to break-glass point(s) is interrupted. |
| Yellow (ERROR - BREAK GLASS) On | Break-Glass Point Cable Short-Circuited | Cable to break-glass point(s) is short-circuited. |
| Yellow (ERROR - TEMP. FUSE) On | Temperature Fuse Activated | Temperature in control unit is above 70°C. |
| Red (ALARM ACTIVE) On | Alarm Active | Smoke ventilation function is activated. |