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E050

E050 — BMS communication time-out

Wilo · Wilo-Stratos GIGA Pumps

What does E050 mean?

Communication with the Building Management System (BMS) has been interrupted or has timed out. Check the bus communication line.

Common Causes

  • Interrupted bus communication
  • Communication timeout
  • Broken cable

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the cable connection to the building automation system.

  2. 2

    Inspect the communication cable for damage or breaks.

  3. 3

    Ensure the BMS is powered on and functioning correctly.

Browse all codes in this manual (40)
Verified technical data. Last updated: April 2026

Related Faults

3 red flashes3 red flashes — Communication errorE.025E.025 — General error codeE000E000 — System OK / No error
Source: Wilo-Stratos GIGA Pumps
Open Manual (Page 55)Search more codes in this manual