E7 appears and the cooker does not heat; sometimes accompanied by a clicking sound from inside.

Safety first: Unplug the multicooker before opening any covers. The heater operates at mains voltage.

Step-by-step checks:

• 1. Visual inspection under pot: Remove the inner pot and inspect the heating plate for burn marks, cracks, or discoloration that may indicate heater damage.
• 2. Listen for relay click: Plug in the unit, start a program, and listen closely. If you hear a click but no heating occurs (and E7 appears), the heater or its wiring may be open.
• 3. Access heater wiring (advanced): With power disconnected, remove the bottom cover. Locate the two heavy-gauge wires going to the heating plate. Check for loose or burnt connectors.
• 4. Check thermal fuse: Find the thermal cutoff in series with the heater. If it appears burnt or open (requires continuity test with a multimeter), it must be replaced with an identical rating.
• 5. Measure heater resistance: Using a multimeter, measure resistance across the heater terminals. A typical value is between 20–60 Ω depending on model. Infinite resistance indicates a broken heater.
• 6. Inspect control board relay: Look for signs of burning or cracking around the heater relay on the PCB. A failed relay may need board-level repair or replacement.

Note: Heater and thermal fuse replacement involve mains wiring and should be performed by a qualified technician if you are not experienced.