primary NTC open/short circuit High

Vokera primary NTC open/short circuit Fault Code

Also written as PRIMARYNTCOPENSHORTCIRCUIT — same fault.

The Vokera primary NTC open/short circuit fault code means: your boiler's temperature sensor is faulty or disconnected, causing the system to stop working because it cannot accurately measure how hot the water is.. It appears on 1 Vokera model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Primary NTC sensor open or short circuit
Typical repair cost £120-200 (including labour)

Engineer required

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

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Vokera models that show the primary NTC open/short circuit fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Vokera primary NTC open/short circuit fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026