Immergas Victrix fault 70

Return/flow probe exchange

Gas boiler

What it means

In case of an incorrect boiler wiring connection the error is detected.

Likely causes

  1. Incorrect boiler wiring connection (return/flow probes swapped)
  2. Flow and return probes reversed or incorrectly connected

Where to start

  1. Verify boiler wiring connections
  2. Check flow and return probe connections
  3. Check wiring connections of return and flow probes

The full answer, free

  • 10 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 58), 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 Immergas manual for the Victrix. Check the model on the data plate before you order parts.

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