Command 0xA9 - Thermostat State Download
This command appears to be used by the MHK2 to request a "download" of a new state from the Kumo Cloud. The request is sent on a regular cadence by an MHK2.
For the packet used by the MHK to submit its state to the Kumo, see 0x41 0xA8 - Thermostat State Upload.
warning
The below table is speculative and not confirmed.
Implementations should not use these definitions until they've been verified more closely.
| Byte | Purpose | Possible Values | Supported by mUART | Notes |
|---|---|---|---|---|
| 0 | CommandType | 0xA9 | ||
| 1-4 | Adapter Timestamp | Timestamp | ||
| 5 | ??? | 0x00 | ||
| 6 | Auto Mode Active (?) | 0x00, 0x01 | ||
| 7 | Heat Setpoint | Enhanced Temperature | No | |
| 8 | Cool Setpoint | Enhanced Temperature | No | |
| 10 | ??? | 0x00, 0x07 | ||
| 12 | ??? | 0x00 |
A blank timestamp (all zeroes) will cause a MHK2 unit to fail to successfully boot, perpetually showing a WAIT screen.
If a heat or cool setpoint are unset (value 0x00), the MHK appears to assume that its settings are correct.
Sample Packets
[FC 62 01 30 10] A9 1C E0 AB 71 00 00 AD B3 00 00 00 00 00 00 00 [3C]
[FC 62 01 30 10] A9 1C E0 AB 80 00 00 AD B3 00 07 00 00 00 00 00 [26]
[FC 62 01 30 10] A9 1C E0 AB 8A 00 00 AD B3 00 07 00 00 00 00 00 [1C]
[FC 62 01 30 10] A9 1C E0 AB 94 00 00 AD B3 00 07 00 00 00 00 00 [12]
[FC 62 01 30 10] A9 1C E0 AB 9E 00 00 AD B3 00 07 00 00 00 00 00 [08]
[FC 62 01 30 10] A9 1C E0 AB A7 00 00 AD B3 00 07 00 00 00 00 00 [FF]
[FC 62 01 30 10] A9 1C E0 AB B1 00 00 AD B3 00 07 00 00 00 00 00 [F5]
[FC 62 01 30 10] A9 1C E0 AB BA 00 00 AD B3 00 07 00 00 00 00 00 [EC]
[FC 62 01 30 10] A9 1C E0 AB CA 00 00 AD B3 00 07 00 00 00 00 00 [DC]
[FC 62 01 30 10] A9 1C E0 AB D3 00 00 AD B3 00 07 00 00 00 00 00 [D3]
[FC 62 01 30 10] A9 1C E0 AB DC 00 00 AD B3 00 07 00 00 00 00 00 [CA]
[FC 62 01 30 10] A9 1C E0 AB E5 00 00 AD B3 00 07 00 00 00 00 00 [C1]
[FC 62 01 30 10] A9 1C E0 AB EF 00 00 AD B3 00 07 00 00 00 00 00 [B7]
[FC 62 01 30 10] A9 1C E0 AB F8 00 00 AD B3 00 07 00 00 00 00 00 [AE]
[FC 62 01 30 10] A9 1C E0 AC 06 00 00 AD B3 00 07 00 00 00 00 00 [9F]
[FC 62 01 30 10] A9 1C E0 AC 0F 00 00 AD B3 00 07 00 00 00 00 00 [96]
[FC 62 01 30 10] A9 1C E0 AC 19 00 00 AD B3 00 07 00 00 00 00 00 [8C]
[FC 62 01 30 10] a9 1c e1 1b ad 00 01 a4 ad 00 07 00 00 00 00 00 [96]