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Kyle WebsterAug 4, 2025
What to do if Salus Microphone system shows Error 04: Room temperature sensor circuit is open?
- JJose EdwardsAug 4, 2025
If the Salus Microphone system displays Error 04 related to an open room temperature sensor circuit: * If the sensor is set to Internal (Default), replace the thermostat or use an external sensor. * If the sensor is set to External (Settings), and Parameter 12 (Appendix A) is set to the external sensor, check the wiring or ensure the sensor is connected. * If the sensor is set to External and Parameter 12 is set to Zigbee remote, follow the “Find & Bind” sequence defined in the IOM.