CodeRegistry
Brands
  1. Home
  2. NIBE
  3. SMO 20 Control Module
  4. 758
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

758

Sensor alarm 758 — Sensor BT12 fault

NIBE · SMO 20 Control Module

What does 758 mean?

This alarm indicates a fault with sensor BT12 connected to the SMO 20. This sensor is crucial for monitoring a specific temperature point in the system.

Common Causes

  • Damaged or faulty BT12 sensor.
  • Loose or corroded wiring to sensor BT12.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Visually inspect the BT12 sensor and its wiring for any signs of damage or loose connections.

  2. 2

    Check for any obstructions or unusual conditions around the sensor's location in the system.

  3. 3

    If the sensor appears faulty or the problem persists, contact a service technician for replacement.

Browse all codes in this manual (54)
Verified technical data. Last updated: April 2026

Related Faults

165Alarm 165 — Low pressure climate system264Alarm 264 — Permanent communication error with inverter294Alarm 294 — Incompatible heat pump
Source: NIBE SMO 20 Control Module
Open Manual (Page 6)Search more codes in this manual