Unit attempts to start but shuts down with H16; compressor does not run or runs briefly then stops.

Safety first: Unplug the unit. High voltage and stored charge may be present on capacitors; discharge safely or leave to a professional if unsure.

• Ventilation check: Ensure the rear and sides of the dehumidifier have adequate clearance and that the condenser coil is not clogged with dust, which can cause high current draw.
• Listen on start: Plug in and start the unit with covers installed. A loud hum followed by a click and H16 suggests a locked compressor or failed start circuit.
• Measure compressor winding resistance: With power disconnected and wires removed from the compressor terminals, measure resistance between each pair of pins. Very low resistance or continuity to ground indicates a shorted compressor.
• Inspect inverter/PCB: Look for burnt components or discoloration on the inverter section of the main PCB. If damaged, the board must be replaced.
• Do not bypass protections: Never bypass thermal or overcurrent protection. If the compressor is locked or windings are shorted, the sealed system and compressor must be replaced by an EPA‑certified technician.