IEC 62394:2024

Service diagnostic interface for consumer electronics products and networks - Implementation for ECHONET

IEC 62394:2024 specifies requirements for service diagnostic software to be implemented in products that incorporate a digital interface. It does not specify requirements for carrying out remote diagnosis or for manufacturer-dependent software.
The Service Diagnostic Interface (SDI) requires an external controller (exclusive or general-purpose/PC) into which service diagnostic software can be loaded. Parts of the controller software are standardized while other parts are proprietary to the manufacturers.
To reach a common approach in servicing all products from all manufacturers, it is necessary to standardize specific items to be tested in products and certain aspects of controllers' diagnostic software.
The SDI is based upon ECHONET specification version 2.11, ECHONET Lite specification version 1.13, and APPENDIX Detailed Requirements for ECHONET Device objects Release Q rev. 1, because this interface will be used in future products. The use of this connection and existing communication protocols enable implementation in products at a low cost, with maximum flexibility and efficiency.
The SDI consists of
• specific hardware and software requirements of the device under test (DUT);
• specific requirements of the controller:
– the service software;
– an ECHONET interface;
• the connection between the controller and the DUT.
This document provides the minimal requirements necessary to carry out computerized diagnosis. It covers the standardized software of the controller as well as the standardized software and provisions in the DUT.
IEC 62394:2024 cancels and replaces the fourth edition published in 2022. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) updates of the device object super class specifications for the property configurations shared by all device objects;
b) modification and addition of the property configurations defined by each object;
c) addition of new device objects and their property configurations;
d) updates to Bibliography.

General Information

• Status: Published
• Publication Date: 29-Oct-2024
• ICS: 33.160.99 - Other audio, video and audiovisual equipment
• ICS: 35.110 - Networking
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Drafting Committee: MT 62394 - TC 100/MT 62394
• Current Stage: PPUB - Publication issued
• Start Date: 30-Oct-2024
• Completion Date: 11-Oct-2024

Relations

• Revises: IEC 62394:2022 - Service diagnostic interface for consumer electronics products and networks - Implementation for ECHONET
• Effective Date: 05-Sep-2023

Overview

IEC 62394:2024 - Service diagnostic interface for consumer electronics products and networks - Implementation for ECHONET - defines the minimum requirements for service diagnostic software and interfaces in consumer electronics that incorporate a digital interface. The standard specifies how an external controller (exclusive tester or general-purpose PC) loads and runs service diagnostic software, what parts of controller software are standardized versus manufacturer‑proprietary, and what must be implemented in the device under test (DUT) to enable computerized diagnosis. This fifth edition (2024, Edition 5.0) is a technical revision that cancels and replaces the 2022 fourth edition.

Key topics and requirements

• Service Diagnostic Interface (SDI) architecture
  • External controller requirements (tester hardware/software, ECHONET interface).
  • DUT hardware and software requirements for SDI compatibility.
  • Physical and logical connection requirements between controller and DUT.
• Standardized vs proprietary software
  • Standardizes specific controller functions and DUT provisions while allowing manufacturer‑specific diagnostic software components.
• Based on ECHONET specifications
  • Aligns with ECHONET v2.11, ECHONET Lite v1.13, and the Appendix “Detailed Requirements for ECHONET Device objects Release Q rev. 1” to ensure forward compatibility.
• Protocol and object definitions
  • Control protocol framing (first and second control protocols, including ECHONET/ECHONET‑Lite headers and service formats).
  • Detailed ECHONET object and property specifications (device object super‑class, sensor classes, appliance classes, property data types and counters).
• Scope constraints
  • Specifies minimal requirements for computerized diagnosis only; it does not standardize remote diagnosis procedures or manufacturer‑dependent software.
• Notable 2024 changes
  • Updates to device object super‑class properties, additions/modifications to object property configurations, new device objects, and bibliography updates.

Applications

• In‑field and factory diagnostics for networked consumer electronics and household appliances.
• Service tool and tester development (hardware and diagnostic software).
• Interoperability testing across products from different manufacturers.
• Integration into low‑cost IoT/CE devices using existing communication protocols for efficient diagnostic support.

Who should use this standard

• Product manufacturers and firmware engineers designing DUT diagnostic capabilities.
• Service tool and diagnostic software vendors implementing SDI controllers.
• Test laboratories and certification bodies validating diagnostic conformity.
• Network integrators, repair centers, and technical support teams working on ECHONET‑based devices.

Related standards

• ECHONET Specification v2.11
• ECHONET Lite Specification v1.13
• IEC publications and prior editions of IEC 62394 (4th edition, 2022)

Keywords: IEC 62394, Service Diagnostic Interface, SDI, ECHONET, ECHONET Lite, diagnostic software, DUT, consumer electronics, device object, property configurations.

Standards Content (Sample)

IEC 62394 ®
Edition 5.0 2024-10
INTERNATIONAL
STANDARD
colour
inside
Service diagnostic interface for consumer electronics products and networks –
Implementation for ECHONET
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IEC 62394 ®
Edition 5.0 2024-10
INTERNATIONAL
STANDARD
colour
inside
Service diagnostic interface for consumer electronics products and networks –

Implementation for ECHONET
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.99; 35.110 ISBN 978-2-8322-9678-3

– 2 – IEC 62394:2024 © IEC 2024
CONTENTS
FOREWORD . 33
INTRODUCTION . 35
1 Scope . 36
2 Normative references . 36
3 Terms, definitions and abbreviated terms . 36
3.1 Terms and definitions . 36
3.2 Abbreviated terms . 37
4 Different types of service diagnostics . 38
4.1 Stand-alone products . 38
4.2 Facilities or household appliances network . 38
4.3 Remote diagnosis . 38
5 SDI requirements . 38
5.1 General . 38
5.2 Hardware . 38
5.2.1 Tester hardware . 38
5.2.2 Facilities or household appliances network . 38
5.2.3 DUT hardware . 38
5.3 Software . 39
5.3.1 General . 39
5.3.2 Tester software . 39
5.3.3 DUT software requirements for the SDI . 39
6 Tester software requirements . 39
6.1 Reading the property diagnostic unit . 39
6.2 General information (product identification) . 40
6.3 Diagnosis information . 40
7 Control protocol 1st . 40
7.1 General . 40
7.2 Frame format . 40
7.2.1 General . 40
7.2.2 ECHONET headers (EHD) . 41
7.2.3 Source/Destination ECHONET address (SEA/DEA) . 43
7.2.4 ECHONET byte counter (EBC). 44
7.2.5 ECHONET data (EDATA) . 44
7.2.6 Object message header (OHD) . 44
7.2.7 ECHONET objects (EOJ) . 45
7.2.8 ECHONET property (EPC) . 46
7.2.9 ECHONET service (ESV) . 47
7.2.10 ECHONET property value data (EDT) . 62
7.2.11 Compound ECHONET Service (CpESV) . 62
7.2.12 Processing target property counter (OPC) . 68
7.2.13 Property data counter (PDC) . 69
8 Control protocol 2nd . 69
8.1 General . 69
8.2 Frame format . 69
8.2.1 General . 69
8.2.2 ECHONET Lite Header (ELHD) . 70

8.2.3 Transaction ID (TID) . 71
8.2.4 ECHONET Lite Data (ELDATA) . 71
8.2.5 ECHONET Objects (EOJ) . 71
8.2.6 ECHONET Lite Service (ELSV) . 72
8.2.7 ECHONET property (EPC) . 80
8.2.8 ECHONET Lite Property data counter (ELPDC) . 81
9 ECHONET objects: detailed specifications . 82
9.1 Basic concept . 82
9.2 ECHONET properties: basic specifications . 83
9.2.1 General . 83
9.2.2 ECHONET property value data types . 83
9.2.3 Property value range . 83
9.2.4 Required class properties . 84
9.2.5 Array . 84
9.3 Device object super class specifications . 85
9.3.1 General . 85
9.3.2 Overview of device object super class specifications . 85
9.3.3 Operation status property . 89
9.3.4 Installation location property . 89
9.3.5 Standard version information property . 91
9.3.6 Identification number property . 91
9.3.7 Measured instantaneous power consumption property . 92
9.3.8 Measured cumulative energy consumption property . 92
9.3.9 Manufacturer's fault code property . 92
9.3.10 Current limit setting property . 93
9.3.11 Fault status property . 93
9.3.12 Fault description property . 93
9.3.13 Manufacturer code property . 95
9.3.14 Business facility code property . 95
9.3.15 Product code property . 96
9.3.16 Production number property . 96
9.3.17 Production date property . 96
9.3.18 Power-saving operation setting property . 96
9.3.19 Remote control setting property . 96
9.3.20 Current time setting property . 98
9.3.21 Current date setting property . 98
9.3.22 Power limit setting property . 98
9.3.23 Cumulative operating time property . 98
9.3.24 Property map property . 99
9.4 Temperature sensor class specifications . 100
9.4.1 General . 100
9.4.2 Operation status property . 100
9.4.3 Measured temperature value property. 100
9.5 Humidity sensor class specifications . 100
9.5.1 General . 100
9.5.2 Operation status property . 101
9.5.3 Measured value of relative humidity property . 101
9.6 Illuminance sensor class specifications . 101
9.6.1 General . 101

– 4 – IEC 62394:2024 © IEC 2024
9.6.2 Operation status property . 101
9.6.3 Measured illuminance value 1 property . 101
9.6.4 Measured illuminance value 2 property . 102
9.7 Human detection sensor class specifications . 102
9.7.1 General . 102
9.7.2 Operation status property . 102
9.7.3 Detection threshold level property . 102
9.7.4 Human detection status property . 102
9.8 Electric energy sensor class specifications . 103
9.8.1 General . 103
9.8.2 Operation status property . 104
9.8.3 Cumulative amounts of electric energy property . 104
9.8.4 Small-capacity sensor instantaneous electric power property . 104
9.8.5 Medium-capacity sensor instantaneous electric power property . 104
9.8.6 Large-capacity sensor instantaneous electric power property . 104
9.8.7 Cumulative amounts of electric energy measurement log property . 104
9.8.8 Effective voltage value property . 104
9.9 Open/close sensor class specifications . 105
9.9.1 General . 105
9.9.2 Operation status property . 105
9.9.3 Degree-of-opening detection status 1 property . 105
9.9.4 Detection threshold level property . 106
9.9.5 Degree-of-opening detection status 2 property . 106
9.10 Current sensor class specifications . 106
9.10.1 General . 106
9.10.2 Operation status property . 106
9.10.3 Measured current value 1 property . 107
9.10.4 Rated voltage property to be measured property. 107
9.10.5 Measured current value 2 property . 107
9.11 Air speed sensor class specifications . 107
9.11.1 General . 107
9.11.2 Operation status property . 107
9.11.3 Measured value of air speed property . 108
9.11.4 Air flow direction property . 108
9.12 Water flow rate sensor class specifications . 108
9.12.1 General . 108
9.12.2 Operation status property . 108
9.12.3 Cumulative flow rate property . 108
9.12.4 Flow rate property . 109
9.13 Rain sensor class specifications . 109
9.13.1 General . 109
9.13.2 Operation status property . 109
9.13.3 Detection threshold level property . 109
9.13.4 Rain detection status property . 109
9.14 Home air conditioner class specifications . 110
9.14.1 General . 110
9.14.2 Operation status property . 119
9.14.3 Power-saving operation setting property . 120
9.14.4 Operation mode setting property . 120

9.14.5 Automatic temperature control setting property . 120
9.14.6 Normal/high-speed/silent operation setting property . 120
9.14.7 Set temperature value property . 120
9.14.8 Set value of relative humidity in dehumidifying mode property . 121
9.14.9 Set temperature value in cooling mode property . 121
9.14.10 Set temperature value in heating mode property . 121
9.14.11 Set temperature value in dehumidifying mode property . 121
9.14.12 Rated power consumption property . 122
9.14.13 Measured value of current consumption property . 122
9.14.14 Measured value of room relative humidity property . 122
9.14.15 Measured value of room temperature property . 122
9.14.16 Set temperature value of user remote control property . 122
9.14.17 Measured cooled air temperature property . 123
9.14.18 Measured outdoor air temperature property . 123
9.14.19 Relative temperature setting property . 123
9.14.20 Air flow rate setting property . 123
9.14.21 Automatic control of air flow direction setting property . 123
9.14.22 Automatic swing of air flow setting property . 124
9.14.23 Air flow direction (vertical) setting property . 124
9.14.24 Air flow direction (horizontal) setting property . 124
9.14.25 Special state property . 125
9.14.26 Non-priority state property . 126
9.14.27 Ventilation function setting property . 126
9.14.28 Humidifier function setting property . 126
9.14.29 Ventilation air flow rate setting property . 126
9.14.30 Degree of humidification setting property . 127
9.14.31 Mounted air cleaning method property . 127
9.14.32 Air purifier function setting property . 127
9.14.33 Mounted air refresh method property . 128
9.14.34 Air refresher function setting property . 129
9.14.35 Mounted self-cleaning method property . 129
9.14.36 Self-cleaning function setting property . 130
9.14.37 Special function setting property . 131
9.14.38 Operation status of components property . 131
9.14.39 Thermostat setting override function property . 132
9.14.40 Air purification mode setting property . 132
9.14.41 Buzzer property . 132
9.14.42 ON timer-based reservation setting property . 132
9.14.43 ON timer setting (time) property . 133
9.14.44 ON timer setting (relative time) . 133
9.14.45 OFF timer-based reservation setting property . 133
9.14.46 OFF timer setting (time) property . 133
9.14.47 OFF timer setting (relative time) property. 133
9.15 Ventilation fan class specifications . 134
9.15.1 General . 134
9.15.2 Operation status property . 134
9.15.3 Ventilation automatic setting property . 134
9.15.4 Set value of ventilation air flow rate property . 134
9.16 Air purifier class specifications . 135

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9.16.1 General . 135
9.16.2 Operation status property . 135
9.16.3 Filter change notice property . 136
9.16.4 Air flow rate setting property . 136
9.16.5 Smoke (cigarette) detection status property . 136
9.16.6 Optical catalyst operation setting property . 136
9.16.7 Air pollution detection status property . 136
9.17 Humidifier class specifications . 136
9.17.1 General . 136
9.17.2 Operation status property . 138
9.17.3 Humidifying setting 1 property . 138
9.17.4 Humidifying setting 2 property . 138
9.17.5 Measured value of relative humidity property . 138
9.17.6 Reservation setting of OFF timer property . 138
9.17.7 Relative time value set of OFF timer property . 139
9.17.8 Ion emission setting property . 139
9.17.9 Implemented ion emission method property . 139
9.17.10 Special operation mode setting property . 139
9.17.11 Water amount level property . 139
9.18 Package-type commercial air conditioner (indoor unit) class specifications . 140
9.18.1 General . 140
9.18.2 Operation status property . 141
9.18.3 Operation mode setting property . 141
9.18.4 Temperature setting property . 142
9.18.5 Measured indoor unit temperature property . 142
9.18.6 Thermostat state property . 142
9.18.7 Current function (automatic operation mode) property . 142
9.18.8 Group information property . 142
9.18.9 Power consumption range for indoor units property . 143
9.19 Package-type commercial air conditioner (outdoor unit) class specifications . 143
9.19.1 General . 143
9.19.2 Operation status property . 144
9.19.3 Rated power consumption of outdoor unit property . 144
9.19.4 Measured outdoor unit temperature property . 144
9.19.5 Special state property . 145
9.19.6 Group information property . 145
9.19.7 Measured power consumption of outdoor unit property . 145
9.19.8 Possible power savings for outdoor units property . 145
9.19.9 Settings restricting power consumption of outdoor units property . 145
9.19.10 Minimum power consumption for restricted outdoor unit property . 146
9.20 Electric storage heater class specifications . 146
9.20.1 General . 146
9.20.2 Operation status property . 149
9.20.3 Temperature setting property . 149
9.20.4 Rated power consumption property . 149
9.20.5 Measured indoor temperature property . 149
9.20.6 Measured outdoor temperature property . 150
9.20.7 Air flow rate setting property . 150
9.20.8 Fan operation status property . 150

9.20.9 Heat storage operation status property . 150
9.20.10 Heat storage temperature setting property . 150
9.20.11 Measured stored heat temperature property . 150
9.20.12 Daytime heat storage setting property . 151
9.20.13 Daytime heat storage ability property . 151
9.20.14 Midnight power duration setting property . 151
9.20.15 Midnight power start time setting property . 151
9.20.16 Radiation method property . 151
9.20.17 Child lock setting property . 151
9.20.18 Fan timer 1 setting property . 151
9.20.19 Fan timer 1 ON time setting property . 152
9.20.20 Fan timer 1 OFF time setting property . 152
9.20.21 Fan timer 2 setting property . 152
9.20.22 Fan timer 2 ON time setting property . 152
9.20.23 Fan timer 2 OFF time setting property . 152
9.21 Gas heat pump-type commercial air conditioner (indoor unit) class
specifications . 152
9.21.1 General . 152
9.21.2 Operation status property . 154
9.21.3 Operation mode setting property . 154
9.21.4 Temperature setting value property . 154
9.21.5 Measured temperature value of indoor unit property . 154
9.21.6 Thermo status property . 154
9.21.7 Operation mode status during automatic operation property . 154
9.21.8 Group information property . 155
9.21.9 Power consumption range for indoor units property . 155
9.22 Gas heat pump-type commercial air conditioner (outdoor unit) class
specifications . 155
9.22.1 General . 155
9.22.2 Operation status (inherited from the super class property) property . 157
9.22.3 Measured temperature value of outdoor unit property . 157
9.22.4 Measured cumulative gas consumption property . 157
9.22.5 Group information property . 157
9.22.6 Time slot operation factor setting property . 157
9.22.7 Allowable operation factor property . 158
9.23 Range hood class specifications . 158
9.23.1 General . 158
9.23.2 Operation status property . 161
9.23.3 Range hood automatic setting property . 161
9.23.4 Ventilation air flow rate setting property . 161
9.23.5 Lighting operation setting property . 161
9.23.6 Light source colour setting property . 161
9.23.7 Brightness level setting property . 161
9.23.8 Lighting mode setting property . 162
9.23.9 When in coloured lighting mode RGB setting property . 162
9.23.10 Measured value of indoor temperature property . 162
9.23.11 Measured value of outdoor temperature property . 162
9.23.12 Measured value of supply air temperature property . 162
9.23.13 Measured value of cooking temperature property . 163

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9.23.14 Measured value of indoor relative humidity property . 163
9.23.15 Measured value of outdoor air humidity property . 163
9.23.16 Human detection threshold level setting property . 163
9.23.17 Human detection status property . 163
9.23.18 Measured value of CO concentration property . 163
9.23.19 Gas detection threshold level setting property . 163
9.23.20 Gas detection status property . 164
9.23.21 Error detection mode property . 164
9.24 Electrically operated shade class specifications . 164
9.24.1 General . 164
9.24.2 Operation status property . 167
9.24.3 Fault description property . 167
9.24.4 Timer operation setting property . 167
9.24.5 Wind detection status property . 167
9.24.6 Sunlight detection status property . 167
9.24.7 Opening (extension) speed setting property . 167
9.24.8 Closing (retraction) speed setting property . 167
9.24.9 Operation time property . 168
9.24.10 Automatic operation setting property. 168
9.24.11 Open/close (extension/retraction) operation setting property . 168
9.24.12 Degree-of-opening property . 168
9.24.13 Shade angle setting property . 168
9.24.14 Open/close (extension/retraction) speed property . 168
9.24.15 Electric lock setting property . 168
9.24.16 Remote operation setting status property . 169
9.24.17 Selective opening (extension) operation setting property . 169
9.24.18 Open/closed (extended/retracted) status property . 169
9.24.19 One-time opening (extension) speed setting property . 169
9.24.20 One-time closing (retraction) speed setting property . 169
9.25 Electrically operated rain sliding door/shutter class specifications . 169
9.25.1 General . 169
9.25.2 Operation status property . 172
9.25.3 Fault description property . 172
9.25.4 Timer operation setting property . 172
9.25.5 Opening speed setting property . 172
9.25.6 Closing speed setting property . 172
9.25.7 Operation time setting property . 172
9.25.8 Open/close operation setting property . 172
9.25.9 Degree-of-opening setting property . 172
9.25.10 Blind angle setting property . 173
9.25.11 Opening/closing speed setting property . 173
9.25.12 Electric lock setting property . 173
9.25.13 Remote operation setting status property . 173
9.25.14 Selective degree-of-opening setting property . 173
9.25.15 Open/closed status property . 173
9.25.16 Slit degree-of-opening property . 173
9.25.17 One-time opening speed setting property. 174
9.25.18 One-time closing speed setting property . 174
9.26 Electric water heater class specifications . 174

9.26.1 General . 174
9.26.2 Operation status property . 181
9.26.3 Automatic water heating setting property . 181
9.26.4 Automatic water temperature control setting property . 181
9.26.5 Water heater status property . 182
9.26.6 Water heating temperature setting property . 182
9.26.7 Manual water heating stop days setting property . 182
9.26.8 Relative time setting value for manual water heating OFF property . 182
9.26.9 Tank operation mode setting property . 182
9.26.10 Daytime reheating permission setting property . 182
9.26.11 Measured temperature of water in water heater property . 182
9.26.12 Alarm status property . 182
9.26.13 Hot water supply status property . 183
9.26.14 Relative time setting for keeping bath temperature property . 183
9.26.15 Temperature of supplied water setting property . 183
9.26.16 Bath water temperature setting property . 183
9.26.17 Hot water volume setting property . 184
9.26.18 Measured amount of water remaining in tank property . 184
9.26.19 Tank capacity property . 184
9.26.20 Automatic bath water heating mode setting property . 184
9.26.21 Manual bath reheating operation setting property . 184
9.26.22 Manual bath hot water addition function setting property. 184
9.26.23 Manual lukewarm water temperature lowering function setting property . 184
9.26.24 Bath water volume setting 1 property . 185
9.26.25 Bath water volume setting 2 property . 185
9.26.26 Bathroom priority setting property . 185
9.26.27 Bath operation status monitor property . 185
9.26.28 Bath water volume setting 3 property .
...