Command 0x09 - Get Run Status
This command returns information about the heat pump's current run status. It is unclear if this is called as part of normal operation.
Certain older heat pump units do not return Run Status as part of their operation. So far, this has been reported on the MSZ-GE##VA and MSZ-FD##VA units, but otherse may be affected.
| Byte | Purpose | Possible Values | Supported by mUART | Notes |
|---|---|---|---|---|
| 0 | CommandType | 0x09 | ||
| 3 | Status Flags | Status Flags | A bitmask of flags indicating the heat pump's current status. | |
| 4 | Actual Fan Speed | Actual Fan Speeds | The speed the fan is currently operating at (may be different from fan setting in 0x02) | |
| 5 | Auto Mode? | Auto Mode | No | Per swicago lib, idle mode but has other values. |
Example Packets
[FC.62.01.30.10]09.00.00.00.02.40.00.00.00.00.00.00.00.00.00.00 12 // wall unit heat request
[FC.62.01.30.10]09.00.00.00.01.40.00.00.00.00.00.00.00.00.00.00 13 // wall unit in idle
[FC.62.01.30.10]09.00.00.00.01.41.00.00.00.00.00.00.00.00.00.00 12 // wall unit in auto, idling
[FC.62.01.30.10]09.00.00.00.01.42.00.00.00.00.00.00.00.00.00.00 12 // wall unit in auto, heating
Status Flags
| Bit | Purpose | Supported by mUART | Notes |
|---|---|---|---|
| 0x01 | Filter | The filter needs to be serviced. | |
| 0x02 | Defrost | The outdoor unit is in a defrost cycle. | |
| 0x04 | HotAdjust | The system is preheating for a HEAT call. | |
| 0x08 | Standby | The unit is in standby mode (another unit with priority is requesting a conflicting mode). |
Actual Fan Speeds
These were extracted from Kumo UI, and don't particularly make much sense. It's unclear if "Super Quiet" is below or above "Very Low", for example. It's also unclear how these map to setting fan speeds (though a preliminary mapping is below). Active research about these values is currently being tracked as part of Issue #27).
| Value | Name | Related Set Speed |
|---|---|---|
| 0 | Off | Off |
| 1 | Very Low | Not observed |
| 2 | Quiet | Low |
| 3 | Low | Medium |
| 4 | Powerful | High |
| 5 | Super Powerful | Powerful |
| 6 | Super Quiet | Quiet |
Auto Modes
The information in this field comes from EChavet's library. Not all information here has been confirmed to be present on all units.
The auto mode field appears to allow a heat pump to return additional information as to what state automatic resolution is in. That is, if the operation mode is set to auto, this field will denote what exactly the unit is doing.
This byte may additionally contain extra bits (namely, 0x40), though the meaning of this bit is currently unknown at
this time.
| Value | Name |
|---|---|
| 0x00 | N/A |
| 0x01 | Cool |
| 0x02 | Heat |
| 0x03 | "Leader" Mode (???) |
| 0x40 | ??? |
| 0x41 | ??? |
| 0x42 | ??? |