Kbox MHVY - Mitsubishi Heavy XY KNX Gateway
Product Features
Kbox MHVY connects Mitsubishi Heavy Industries air conditioners to a KNX automation system. The link is made over the indoor unit's X/Y communication line.
This is the only device in the Kbox family that makes the ambient temperature source selectable. The "Ambient Temperature Source" parameter in ETS either feeds the temperature from the KNX bus (From Bus) or reads it from the air conditioner's suction air sensor and reports it back to KNX (From AC). The second option carries temperature data onto the bus without the cost of a separate sensor in projects that have no KNX temperature sensor in the room.
The device can run in parallel with an existing wired controller through its Slave Function. The setpoint is limited to 18–30 °C in cooling and 16–30 °C in heating.
Integration Notes
- There is no Fan Auto: on Kbox MHVY the fan runs as 4 fixed levels; an Auto step does not exist. Account for that if you are planning an "Auto" option for the fan in a visualisation or BMS.
- There is no horizontal vane: the device controls only the vertical vane (Up-Down Wing, 4 positions plus Swing). Left-Right Wing is not supported — reflect that in the design on projects that need horizontal vane control.
- When From AC is selected: only the "Ambient Temperature Feedback" group object remains visible; the "Ambient Temperature" object used to write the temperature from the bus disappears. Any visualisation bound to the write object has to be reviewed alongside this choice.
- Compatibility: verify your indoor unit model in the compatibility finder.
Documents & Downloads
Box Contents
- Kbox-MHVY KNX gateway
- Wago KNX Terminal
Technical Specifications
| Device | Kbox MHVY - Mitsubishi Heavy XY KNX Gateway |
|---|---|
| AC brand | Mitsubishi Heavy |
| Connection port | X/Y |
| Compatible indoor units | Mitsubishi Heavy indoor units |
| ETS application version | 1.0.8 |
| KNX certificate no. | 574/22153/25 (KNX v3.0.4) |
| Power supply | KNX bus (EIB) |
| Power consumption | 10 mA |
| Inputs | 3 dry contact inputs |
| Button / LED | 1 × KNX programming button · 1 × KNX programming LED |
| Operating mode | S-Mode |
| Protection class | IP20 |
| Working temperature | -10 °C … +70 °C |
| Storage temperature | -25 °C … +90 °C |
| Max. humidity | < 90 % RH |
| Dimensions | 44.5 × 19.8 × 44.5 mm |
| Configuration | ETS 5 / ETS 6 |
ETS Parameters
The device connects to the Mitsubishi Heavy indoor unit through the X/Y port. The parameters below are configured in ETS.
| Operating modes | Cool / Heat / Dry / Fan Only / Auto |
|---|---|
| Fan speed | 4 levels (no Auto) |
| Up-Down Wing | 4 addressable positions + Swing |
| Left-Right Wing | No |
| Cooling setpoint range | 18 – 30 °C |
| Heating setpoint range | 16 – 30 °C |
| Ambient temperature source | Selectable: From Bus / From AC |
| Slave Function (parallel with a wired remote controller) | Yes |
KNX Group Objects
The device exposes 55 group objects. Object names are given exactly as they appear in the ETS database.
| Object | Function | Type | Flags |
|---|---|---|---|
| General | |||
| On/Off | 1: On / 0: Off | 1 bit | CWU |
| On/Off Feedback | 1: On / 0: Off | 1 bit | CRT |
| Alive Status | Alive notification | 1 bit | CRT |
| Remote Controller Lock | 1: Enabled / 0: Disabled | 1 bit | CRWU |
| Object Control Lock | 1: Enabled / 0: Disabled | 1 bit | CRWU |
| Error Status | ASCII error code | 14 bytes | CRT |
| Error Alarm | 1: On / 0: Off | 1 byte | CRT |
| Mode | |||
| Mode | Cool / Heat / Dry (Dehumidification) / Fan (Fan Only) / Auto | 1 byte | CWU |
| Mode Feedback | Cool / Heat / Dry (Dehumidification) / Fan (Fan Only) / Auto | 1 byte | CRT |
| Mode +/- | 1: Increase / 0: Decrease | 1 bit | CWU |
| Heat/Cool Mode Set | 1: Heat / 0: Cool | 1 bit | CWU |
| Cool Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Heat Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Dry (Dehumidification) Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan (Fan Only) Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Auto Mode Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Cool Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Heat Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Dry (Dehumidification) Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan (Fan Only) Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Auto Mode Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Temperature | |||
| Set Point Temperature | Temperature (°C) | 2 bytes | CWU |
| Set Point Temperature Feedback | Temperature (°C) | 2 bytes | CRT |
| Set Point Temperature +/- | 1: Increase / 0: Decrease | 1 bit | CWU |
| Ambient Temperature | Temperature (°C), min 8 / max 39 | 2 bytes | CWU |
| Ambient Temperature Feedback | Temperature (°C) | 2 bytes | CRT |
| Fan | |||
| Fan Level Set | Percentage (Scaling) | 1 byte | CWU |
| Fan Level Feedback | Percentage (Scaling) | 1 byte | CRT |
| Fan Level Set | 1…4 (Enumerated) | 1 byte | CWU |
| Fan Level Feedback | 1…4 (Enumerated) | 1 byte | CRT |
| Fan Level +/- Set | 1: Increase / 0: Decrease | 1 bit | CWU |
| Fan Level-1 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-2 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-3 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-4 Set | 1: Enable / 0: Disable | 1 bit | CWU |
| Fan Level-1 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan Level-2 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan Level-3 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Fan Level-4 Feedback | 1: Enable / 0: Disable | 1 bit | CRT |
| Up-Down Wing | |||
| Up-Down Wing Set | Percentage (Scaling) | 1 byte | CWU |
| Up-Down Wing Feedback | Percentage (Scaling) | 1 byte | CRT |
| Up-Down Wing Set | 1…4 (Enumerated) | 1 byte | CWU |
| Up-Down Wing Feedback | 1…4 (Enumerated) | 1 byte | CRT |
| Up-Down Wing +/- Set | 1: Increase / 0: Decrease | 1 bit | CWU |
| Up-Down Wing Position 1 Set | 1: Set Position 1 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 2 Set | 1: Set Position 2 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 3 Set | 1: Set Position 3 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 4 Set | 1: Set Position 4 / 0: NA | 1 bit | CWU |
| Up-Down Wing Position 1 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Up-Down Wing Position 2 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Up-Down Wing Position 3 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Up-Down Wing Position 4 Feedback | 1: Active / 0: Inactive | 1 bit | CRT |
| Digital Inputs | |||
| Digital Input 1 | 1: Active / 0: Passive | 1 bit | CWU |
| Digital Input 2 | 1: Active / 0: Passive | 1 bit | CWU |
| Digital Input 3 | 1: Active / 0: Passive | 1 bit | CWU |
Flags: C = Communication, R = Read, W = Write, T = Transmit, U = Update.