Response timeout on GET_POWERUSAGE(0x41) request

[fredericve]

I have a maxicool AMD-AUR-09HDI AURORA unit and I'm seeing a response timeout after sending the GET_POWERUSAGE request:

[23:01:23.013][D][AirConditioner:131]: Enqueuing a GET_POWERUSAGE(0x41) request...
[23:01:23.013][D][ApplianceBase:173]: Enqueuing the request...
[23:01:24.270][D][ApplianceBase:075]: Getting and sending a request from the queue...
[23:01:24.270][D][ApplianceBase:162]: TX: AA 22 AC 8E 00 00 00 00 00 03 41 21 01 44 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 05 28 C9 
[23:01:28.049][D][ApplianceBase:139]: Response timeout...
[23:01:28.051][D][ApplianceBase:146]: Sending request again. Attempts left: 2...
[23:01:28.052][D][ApplianceBase:162]: TX: AA 22 AC 8E 00 00 00 00 00 03 41 21 01 44 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 05 28 C9 
[23:01:32.053][D][ApplianceBase:139]: Response timeout...
[23:01:32.056][D][ApplianceBase:146]: Sending request again. Attempts left: 1...
[23:01:32.056][D][ApplianceBase:162]: TX: AA 22 AC 8E 00 00 00 00 00 03 41 21 01 44 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 05 28 C9 
[23:01:36.059][D][ApplianceBase:139]: Response timeout...
[23:01:36.062][D][ApplianceBase:154]: Destroying the request...
[23:01:36.062][D][AirConditioner:177]: Enqueuing a GET_STATUS(0x41) request...
[23:01:36.062][D][ApplianceBase:173]: Enqueuing the request...
[23:01:36.444][D][ApplianceBase:075]: Getting and sending a request from the queue...
[23:01:36.444][D][ApplianceBase:162]: TX: AA 21 AC 8D 00 00 00 00 00 03 41 81 00 FF 03 FF 00 02 00 00 00 00 00 00 00 00 00 00 00 00 03 06 EA EB 
[23:01:36.567][D][ApplianceBase:063]: RX: AA 1E AC 00 00 00 00 00 00 03 C0 00 41 66 7F 7F 00 00 00 00 00 5A 51 00 00 00 00 00 00 F0 33 

The result is that the unit is sometimes slow to respond to a command, or I've already noticed the command not being executed at all.