Devola dehumidifier shows E7 and stops; may occur when trying to start the compressor.

Safety: Unplug the unit. Compressor and mains circuits carry dangerous voltages; if you are not experienced, contact a professional.

E7 often indicates an abnormal compressor current draw or overload condition.

• Visual inspection: Remove the rear panel to access the compressor compartment. Look for burnt wiring, melted connectors, or a burnt smell near the compressor terminals.
• Check start device: Many Devola dehumidifiers use a PTC start relay or start module on the compressor. Remove the start device and inspect for cracks, burn marks, or rattling pieces inside. Replace if damaged.
• Test compressor windings (advanced): With the unit unplugged, remove the start device and measure resistance between the compressor terminals using a multimeter. Compare to Devola service specs. Very low resistance or continuity to ground indicates a shorted compressor.
• Replace start relay/PTC: If the compressor tests OK but E7 persists, install a new Devola-specified compressor start relay/PTC.
• If compressor is shorted or seized: The compressor must be replaced and the sealed system evacuated and recharged. This is a specialist job for a refrigeration engineer.
• PCB fault: If all hardware checks out, the main control PCB current-sense circuit may be faulty and require replacement.