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E050

E050 - BMS communication time-out

Wilo · Helix VE Pumps

What does E050 mean?

The connection to the Building Management System (BMS) has timed out. The red LED will light up.

Common Causes

  • BMS communication time-out

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the pump and wait 300 seconds.

  2. 2

    Check the connection to the BMS.

  3. 3

    Manually acknowledge the fault after resolving the issue.

Browse all codes in this manual (24)
Verified technical data. Last updated: April 2026

Related Faults

E then 3 digitsE followed by 3 digits - Fault page displayedE001E001 - Pump overloadE004 (E032)E004 (E032) - Low converter supply voltage
Source: Wilo Helix VE Pumps
Open Manual (Page 34)Search more codes in this manual