CZ-TAW1 crashed after the original firmware update

[omenukas]

The CZ-TAW1 module was connected to the Aquarea Smart Cloud and stopped working sometime in the fall/winter. The "Status" indicator started flashing red. After rebooting the module it works for a while and then breaks again.
I decided to try sending the heat pump data to the Mqtt server.
I performed a firmware rewrite using the following link:
https://www.mediafire.com/file/c2ac2ls56fhzxbz/GoHeishaMon1.1.191z166.zip/file
Everything started working and I was already happy, but only half an hour. And then the data to mqtt stopped going. After rebooting the module, it's the same again - it works for a while and then stops again. The situation is the same as with the original firmware.
Do you have any ideas on how to solve this problem?

[omenukas]

Addition:
I have found that when I stop receiving mqtt messages from the heat pump, I can still send setting changes to the heat pump and they actually change on the unit.

[donpablos]

I'm using firmware from the link:
https://www.mediafire.com/file/c2ac2ls56fhzxbz/GoHeishaMon1.1.191z166.zip/file

I've the same problems like @omenukas

[donpablos]

I tried the procedure to access ssh ( to gather any logs) :

panasonic_heat_pump/commands/OSCommand umount /overlay
panasonic_heat_pump/commands/OSCommand jffs2reset -y
panasonic_heat_pump/commands/OSCommand reboot

and after rebooting your software stops working, only helps me flash the device again .

[dimaregabriele]

hello, were you able to configure homeassistant ? you can help me ? @donpablos @omenukas

[tomeeka]

@omenukas
I have the same problem with the original firmware, it works for about a day.
After a reboot, it is working again for a while.
Have not tried GoHeishaMon yet.
Do you have any solution to solve this problem? Can this be a HW problem?
My adapter is brand new, doing this since day 1.

[omenukas]

I solved the problem by buying this module:
https://www.tindie.com/products/thehognl/heishamon-communication-pcb/
It works perfectly, without any problems, and I will throw the CZ-TAW1 in the trash 😀 Trying to solve the problem, neither changing the module, nor changing the pump motherboard (the changes were made by Panasonic representatives themselves), nor changing the Internet did not help.

[omenukas]

@dimaregabriele
Try this perfect tool:
https://github.com/edterbak/NodeRed_Heishamon_control

[adnovea]

I first tried with the version downloaded in Aug 2023 (v1.0.166 I guess Jan 12 2021 /usr/bin/GoHeishaMon_MIPSUP) without success so I SSH the module and ran manually GoHeishaMon_MIPSUP :

root@CZ-TAW1B:~# /usr/bin/GoHeishaMon_MIPSUPX
try to update configfile: /etc/gh/configFound port: /dev/ttyS0
Found port: /dev/ttyUSB0
Invalid serial port
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x303c3c]

goroutine 1 [running]:
go.bug.st/serial.(*unixPort).Write(0x0, 0x5d4a40, 0x6e, 0x6e, 0x123c74c8, 0xc33d7c, 0xb2c97000)
        /go/src/go.bug.st/serial/serial_unix.go:88 +0x30
main.send_command(0x5d4a40, 0x6e, 0x6e, 0x6e, 0x1)
        /go/src/github.com/lsochanowski/GoHeishaMon/taw2mqtt.go:1060 +0x94
main.main()
        /go/src/github.com/lsochanowski/GoHeishaMon/taw2mqtt.go:572 +0xa80

I found this post #27 (comment) and tried again but

GoHeishaMon (version 1.1.191 ) crashes randomly

I wrote a short script to run GHM and check when it crashes.
Actually after few minutes to several hours.

Start GoHeishaMon
-----------------
Sun Nov  5 08:21:51 CET 2023 Start GoHeishaMon Process
Sun Nov  5 08:44:11 CET 2023 Crash ...
Sun Nov  5 08:44:12 CET 2023 Start GoHeishaMon Process
Sun Nov  5 08:54:06 CET 2023 Crash ...
Sun Nov  5 08:54:07 CET 2023 Start GoHeishaMon Process
Sun Nov  5 09:27:14 CET 2023 Crash ...
Sun Nov  5 09:27:15 CET 2023 Start GoHeishaMon Process
Sun Nov  5 09:41:03 CET 2023 Crash ...
Sun Nov  5 09:41:04 CET 2023 Start GoHeishaMon Process
Sun Nov  5 09:49:42 CET 2023 Crash ...
Sun Nov  5 09:49:43 CET 2023 Start GoHeishaMon Process
Sun Nov  5 10:54:29 CET 2023 Crash ...
Sun Nov  5 10:54:30 CET 2023 Start GoHeishaMon Process
Sun Nov  5 11:12:05 CET 2023 Crash ...
Sun Nov  5 11:12:06 CET 2023 Start GoHeishaMon Process
Sun Nov  5 13:05:24 CET 2023 Crash ...
Sun Nov  5 13:05:25 CET 2023 Start GoHeishaMon Process

Latest version GoHeishaMon (version 1.0.192 ) also crashes randomly

I have no idea where to look to avoid these crashes.