Charger shows E13 and refuses to start when multiple chargers are installed in a load‑sharing group.

Safety first: Turn off power to all chargers in the group before modifying wiring.

• Step 1 – Verify configuration: Check that one "Electrify Home" charger is set as master and others as slaves according to the manual. Ensure addresses or IDs are unique.
• Step 2 – Inspect communication cabling: With power OFF, inspect the daisy‑chain communication cable (often twisted pair) between chargers. Ensure all connectors are fully seated and polarity (A/B) is consistent.
• Step 3 – Check termination: Confirm that termination resistors or switches are set correctly at the ends of the communication bus, as specified by Electrify Home.
• Step 4 – Test individually: Power up a single charger disconnected from the bus. If it works alone but fails when connected, the issue is likely on the communication bus or another charger.
• Step 5 – Replace damaged port/board: If one unit consistently triggers E13 when connected, its communication interface on the main control board may be damaged and require replacement.