Dehumidifier shows E5 and compressor does not run; fan may operate.

Critical safety: Unplug the unit. Do not attempt to open the sealed refrigeration system (copper lines, compressor) unless you are a certified refrigeration technician.

• Improve airflow: Remove and clean the air filter with mild soap and water; let it dry completely. Vacuum dust from the condenser coil (the warm coil near the back) using a soft brush attachment.
• Check fan operation: With the covers back on, plug in and start the unit. Observe through the grille: the fan must run whenever the compressor is commanded on. If the fan is not spinning or is slow, suspect a failed fan motor or capacitor.
• Allow cool-down: If the unit has been running in a very hot room, let it cool for 30–60 minutes unplugged, then retry. A tripped thermal protector may reset.
• Inspect fan motor: Unplug, remove the rear cover, and check the fan blades for obstructions. Spin the fan by hand; it should move freely. If stiff or noisy, replace the fan motor assembly.
• Persistent E5: If airflow is good and the fan works but E5 returns quickly, the compressor may be drawing excessive current or the system pressure is abnormal. This typically requires a professional to check refrigerant charge, compressor health, and high-pressure protection circuits.