Unknown
F15 on Vaillant ecoMAX 824E

Vaillant ecoMAX 824E fault code F15

What the manual says

Manufacturer manual

Short circuit of DHW heat exchanger NTC (NTC3)

From this model's manual
Verified against the Vaillant/Vaillant Ecomax 824e installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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All 26 fault codes on the ecoMAX 824E

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