Vokera Pinnacle Combi fault E055

No card fan communication

Gas boiler

What it means

Transitory error indicating loss of communication between the control card and the fan.

Likely causes

  1. Fan communication wiring fault
  2. Fan failure
  3. PCB fault
  4. Ignition failure
  5. Flame instability

Where to start

  1. Check wiring between PCB and fan
  2. Check fan tacho signal operation
  3. Verify flow temperature sensor readings

The full answer, free

  • 14 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 8), right under the answer

Safety: Isolate gas and power before you open the case. If you have been into the gas side, do a tightness test, and a combustion and flue check before you hand back. Gas Safe (UK) or RGI (Ireland) work only.

From the Vokera manual for the Pinnacle Combi. Check the model on the data plate before you order parts.

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