Sonoff ifan04-H maybe not operating as expected?

[sotiris-bos]

PROBLEM DESCRIPTION

A clear and concise description of what the problem is.
I have a Sonoff ifan04-H model. I have replaced the two capacitors with two smaller ones, a 1uF and a 1.5uF capacitor because the included caps had too high of a capacitance and span my fan too fast. However, the difference between fanspeed 1 and fanspeed 2 is very large, the fan consumes 7w when running at fanspeed 1 with cap 1uF, and 32w+ when running at fanspeed 2 with cap 1.5uF.

I am not sure if this is related to the caps or tasmota but I want to raise this issue: The original Sonoff firmware activates both caps when fanspeed 2 is enabled. The tasmota firmware is supposed to only activate one of the caps when it is in either fanspeed 1 or fanspeed 2.

Could this be a case where the firmware does not work as expected and activates both caps at the same time on ifan04-H? I also own a Sonoff ifan03, installed on a second identical fan, with standard caps (2.5uF for fanspeed 1 and 3uF for fanspeed 2) and the rotation speed of ifan04 with fanspeed 2 (1.5uF supposedly) and ifan03 at fanspeed 1 (2.5uF) is quite similar, but I don't think it is identical.

Is there anything I can do to make sure that only one of the relays and hence only one of the caps are providing power to the fan? Any logs or files I can share with you to diagnose?

REQUESTED INFORMATION

Make sure your have performed every step and checked the applicable boxes before submitting your issue. Thank you!

• Read the Contributing Guide and Policy and the Code of Conduct
• Searched the problem in issues
• Searched the problem in discussions
• Searched the problem in the docs
• Searched the problem in the chat
• Device used (e.g., Sonoff Basic): Sonoff ifan04-H
• Tasmota binary firmware version number used: 12.0.2
  • Pre-compiled
  • Self-compiled
• Flashing tools used: Tasmotizer
• Provide the output of command: Backlog Template; Module; GPIO 255:

  Configuration output here:
14:30:36.348 CMD: Backlog Template; Module; GPIO 255
14:30:36.403 MQT: stat/tasmota_77E276/RESULT = {"NAME":"Generic","GPIO":[1,1,1,1,1,1,1,1,1,1,1,1,1,1],"FLAG":0,"BASE":18}
14:30:36.615 MQT: stat/tasmota_77E276/RESULT = {"Module":{"71":"Sonoff iFan03"}}
14:30:36.869 MQT: stat/tasmota_77E276/RESULT = {"GPIO0":{"32":"Button1"},"GPIO1":{"3200":"Serial Tx"},"GPIO2":{"0":"None"},"GPIO3":{"3232":"Serial Rx"},"GPIO4":{"0":"None"},"GPIO5":{"0":"None"},"GPIO9":{"256":"Relay_i1"},"GPIO10":{"512":"Buzzer_i"},"GPIO12":{"226":"Relay3"},"GPIO13":{"320":"Led_i1"},"GPIO14":{"225":"Relay2"},"GPIO15":{"227":"Relay4"},"GPIO16":{"0":"None"},"GPIO17":{"0":"None"}}

• If using rules, provide the output of this command: Backlog Rule1; Rule2; Rule3:

  Rules output here:
14:32:08.780 CMD: Backlog Rule1; Rule2; Rule3
14:32:08.848 MQT: stat/tasmota_77E276/RESULT = {"Rule1":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}
14:32:09.062 MQT: stat/tasmota_77E276/RESULT = {"Rule2":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}
14:32:09.312 MQT: stat/tasmota_77E276/RESULT = {"Rule3":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}

• Provide the output of this command: Status 0:

  STATUS 0 output here:
14:26:41.001 CMD: Status 0
14:26:41.008 MQT: stat/tasmota_77E276/STATUS = {"Status":{"Module":71,"DeviceName":"Sotiris Fan","FriendlyName":["Sotiris Fan"],"Topic":"tasmota_77E276","ButtonTopic":"0","Power":0,"PowerOnState":3,"LedState":1,"LedMask":"FFFF","SaveData":1,"SaveState":1,"SwitchTopic":"0","SwitchMode":[0,0,0,0,0,0,0,0],"ButtonRetain":0,"SwitchRetain":0,"SensorRetain":0,"PowerRetain":0,"InfoRetain":0,"StateRetain":0}}
14:26:41.015 MQT: stat/tasmota_77E276/STATUS1 = {"StatusPRM":{"Baudrate":9600,"SerialConfig":"8N1","GroupTopic":"tasmotas","OtaUrl":"http://ota.tasmota.com/tasmota/release/tasmota.bin.gz","RestartReason":"Power On","Uptime":"0T00:00:32","StartupUTC":"2022-08-16T13:26:09","Sleep":50,"CfgHolder":4617,"BootCount":29,"BCResetTime":"2022-08-09T18:46:30","SaveCount":217,"SaveAddress":"FB000"}}
14:26:41.024 MQT: stat/tasmota_77E276/STATUS2 = {"StatusFWR":{"Version":"12.0.2(tasmota)","BuildDateTime":"2022-06-20T12:41:03","Boot":31,"Core":"2_7_4_9","SDK":"2.2.2-dev(38a443e)","CpuFrequency":80,"Hardware":"ESP8285","CR":"337/699"}}
14:26:41.029 MQT: stat/tasmota_77E276/STATUS3 = {"StatusLOG":{"SerialLog":0,"WebLog":2,"MqttLog":0,"SysLog":0,"LogHost":"","LogPort":514,"SSId":["iot",""],"TelePeriod":300,"Resolution":"558180C0","SetOption":["00008009","2805C80001000600003C5A0A190000000000","00000080","00006000","00004000","00000000"]}}
14:26:41.042 MQT: stat/tasmota_77E276/STATUS4 = {"StatusMEM":{"ProgramSize":619,"Free":384,"Heap":23,"ProgramFlashSize":1024,"FlashSize":1024,"FlashChipId":"14325E","FlashFrequency":40,"FlashMode":3,"Features":["00000809","8F9AC787","04368001","000000CF","010013C0","C000F981","00004004","00001000","14000020","00000000"],"Drivers":"1,2,3,4,5,6,7,8,9,10,12,16,18,19,20,21,22,24,26,27,29,30,35,37,45,62","Sensors":"1,2,3,4,5,6"}}
14:26:41.050 MQT: stat/tasmota_77E276/STATUS5 = {"StatusNET":{"Hostname":"tasmota-77E276-0630","IPAddress":"10.0.3.43","Gateway":"10.0.3.1","Subnetmask":"255.255.255.0","DNSServer1":"10.0.3.1","DNSServer2":"0.0.0.0","Mac":"70:03:9F:77:E2:76","Webserver":2,"HTTP_API":1,"WifiConfig":2,"WifiPower":17.0}}
14:26:41.056 MQT: stat/tasmota_77E276/STATUS6 = {"StatusMQT":{"MqttHost":"10.0.3.10","MqttPort":1883,"MqttClientMask":"DVES_%06X","MqttClient":"DVES_77E276","MqttUser":"hass","MqttCount":1,"MAX_PACKET_SIZE":1200,"KEEPALIVE":30,"SOCKET_TIMEOUT":4}}
14:26:41.064 MQT: stat/tasmota_77E276/STATUS7 = {"StatusTIM":{"UTC":"2022-08-16T13:26:41","Local":"2022-08-16T14:26:41","StartDST":"2022-03-27T02:00:00","EndDST":"2022-10-30T03:00:00","Timezone":"+01:00","Sunrise":"05:44","Sunset":"20:04"}}
14:26:41.071 MQT: stat/tasmota_77E276/STATUS10 = {"StatusSNS":{"Time":"2022-08-16T14:26:41"}}
14:26:41.079 MQT: stat/tasmota_77E276/STATUS11 = {"StatusSTS":{"Time":"2022-08-16T14:26:41","Uptime":"0T00:00:32","UptimeSec":32,"Heap":24,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER1":"OFF","FanSpeed":0,"Wifi":{"AP":1,"SSId":"iot","BSSId":"8A:8A:20:D7:7C:E9","Channel":6,"Mode":"11n","RSSI":44,"Signal":-78,"LinkCount":1,"Downtime":"0T00:00:03"}}}

• Set weblog to 4 and then, when you experience your issue, provide the output of the Console log:

  Console output here:
14:30:36.869 MQT: stat/tasmota_77E276/RESULT = {"GPIO0":{"32":"Button1"},"GPIO1":{"3200":"Serial Tx"},"GPIO2":{"0":"None"},"GPIO3":{"3232":"Serial Rx"},"GPIO4":{"0":"None"},"GPIO5":{"0":"None"},"GPIO9":{"256":"Relay_i1"},"GPIO10":{"512":"Buzzer_i"},"GPIO12":{"226":"Relay3"},"GPIO13":{"320":"Led_i1"},"GPIO14":{"225":"Relay2"},"GPIO15":{"227":"Relay4"},"GPIO16":{"0":"None"},"GPIO17":{"0":"None"}}
14:31:18.408 MQT: tele/tasmota_77E276/STATE = {"Time":"2022-08-16T14:31:18","Uptime":"0T00:05:09","UptimeSec":309,"Heap":25,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER1":"OFF","FanSpeed":0,"Wifi":{"AP":1,"SSId":"iot","BSSId":"8A:8A:20:D7:7C:E9","Channel":6,"Mode":"11n","RSSI":42,"Signal":-79,"LinkCount":1,"Downtime":"0T00:00:03"}}
14:31:50.769 CMD: Backlog Rule1; Rule2; Rule3
14:31:50.843 MQT: stat/tasmota_77E276/RESULT = {"Rule1":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}
14:31:51.055 MQT: stat/tasmota_77E276/RESULT = {"Rule2":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}
14:31:51.305 MQT: stat/tasmota_77E276/RESULT = {"Rule3":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}
14:32:08.780 CMD: Backlog Rule1; Rule2; Rule3
14:32:08.848 MQT: stat/tasmota_77E276/RESULT = {"Rule1":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}
14:32:09.062 MQT: stat/tasmota_77E276/RESULT = {"Rule2":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}
14:32:09.312 MQT: stat/tasmota_77E276/RESULT = {"Rule3":{"State":"OFF","Once":"OFF","StopOnError":"OFF","Length":0,"Free":511,"Rules":""}}
14:32:59.445 MQT: stat/tasmota_77E276/RESULT = {"SerialLog":{"0":{"Active":"0"}}}
14:32:59.456 MQT: stat/tasmota_77E276/RESULT = {"WebLog":4}
14:32:59.461 SRC: Backlog
14:32:59.464 CMD: Grp 0, Cmd 'MQTTLOG', Idx 1, Len 1, Pld 0, Data '0'
14:32:59.470 MQT: stat/tasmota_77E276/RESULT = {"MqttLog":0}
14:32:59.474 SRC: Backlog
14:32:59.477 CMD: Grp 0, Cmd 'SYSLOG', Idx 1, Len 1, Pld 0, Data '0'
14:32:59.482 MQT: stat/tasmota_77E276/RESULT = {"SysLog":{"0":{"Active":"0"}}}
14:32:59.487 SRC: Backlog
14:32:59.489 CMD: Grp 0, Cmd 'LOGHOST', Idx 1, Len 1, Pld 1, Data '1'
14:32:59.491 CFG: CR 337/699, Busy 0
14:32:59.495 MQT: stat/tasmota_77E276/RESULT = {"LogHost":""}
14:32:59.502 SRC: Backlog
14:32:59.504 CMD: Grp 0, Cmd 'LOGPORT', Idx 1, Len 3, Pld 514, Data '514'
14:32:59.508 MQT: stat/tasmota_77E276/RESULT = {"LogPort":514}
14:32:59.514 SRC: Backlog
14:32:59.517 CMD: Grp 0, Cmd 'TELEPERIOD', Idx 1, Len 3, Pld 300, Data '300'
14:32:59.523 MQT: stat/tasmota_77E276/RESULT = {"TelePeriod":300}
14:33:00.425 MQT: tele/tasmota_77E276/STATE = {"Time":"2022-08-16T14:33:00","Uptime":"0T00:06:51","UptimeSec":411,"Heap":25,"SleepMode":"Dynamic","Sleep":50,"LoadAvg":19,"MqttCount":1,"POWER1":"OFF","FanSpeed":0,"Wifi":{"AP":1,"SSId":"iot","BSSId":"8A:8A:20:D7:7C:E9","Channel":6,"Mode":"11n","RSSI":40,"Signal":-80,"LinkCount":1,"Downtime":"0T00:00:03"}}
14:33:00.651 CFG: Saved to flash at FA, Count 218, Bytes 4096
14:33:01.365 HTP: Main Menu
14:33:02.891 SRC: WebGui from 172.16.0.2
14:33:02.893 SRC: WebGui
14:33:02.895 CMD: Grp 0, Cmd 'FANSPEED', Idx 1, Len 1, Pld 1, Data '1'
14:33:02.903 MQT: stat/tasmota_77E276/RESULT = {"FanSpeed":1}
14:33:03.654 CFG: Saved to flash at F9, Count 219, Bytes 4096
14:33:08.649 CFG: Saved to flash at F8, Count 220, Bytes 4096
14:33:11.385 WIF: Sending Gratuitous ARP
14:33:12.786 WIF: Checking connection...
14:33:32.777 WIF: Checking connection...
14:33:52.766 WIF: Checking connection...
14:34:03.299 SRC: WebGui from 172.16.0.2
14:34:03.301 SRC: WebGui
14:34:03.303 CMD: Grp 0, Cmd 'FANSPEED', Idx 1, Len 1, Pld 2, Data '2'
14:34:03.311 MQT: stat/tasmota_77E276/RESULT = {"FanSpeed":2}
14:34:03.662 CFG: Saved to flash at F7, Count 221, Bytes 4096
14:34:11.383 WIF: Sending Gratuitous ARP
14:34:11.588 HTP: Console
14:34:12.791 WIF: Checking connection...
14:34:32.786 WIF: Checking connection...
14:34:52.764 WIF: Checking connection...

TO REPRODUCE

Steps to reproduce the behavior:

EXPECTED BEHAVIOUR

A clear and concise description of what you expected to happen.
I would expect fanspeed 1 and fanspeed 2 to be more similar to each other. My old controller was running a 1.5uF cap for its fanspeed 2 and the fan was rotating much more slowly than the Sonoff ifan04 with tasmota and 1.5uF capacitor for its fanspeed 2.

SCREENSHOTS

If applicable, add screenshots to help explain your problem.

ADDITIONAL CONTEXT

Add any other context about the problem here.

(Please, remember to close the issue when the problem has been addressed)

[arendst]

Tasmota controls the same relays as the original firmware.

See source code regarding fanspeed control:

uint8_t GetFanspeed(void)
{
  if (ifan_fanspeed_timer) {
    return ifan_fanspeed_goal;                     // Do not show sequence fanspeed
  } else {
    /* Fanspeed is controlled by relay 2, 3 and 4 as in Sonoff 4CH.
      000x = 0
      001x = 1
      011x = 2
      101x = 3 (ifan02) or 100x = 3 (ifan03)
    */
    uint8_t fanspeed = (uint8_t)(TasmotaGlobal.power &0xF) >> 1;
    if (fanspeed) { fanspeed = (fanspeed >> 1) +1; }  // 0, 1, 2, 3
    return fanspeed;
  }
}

[sotiris-bos]

Tasmota controls the same relays as the original firmware.

See source code regarding fanspeed control:

uint8_t GetFanspeed(void)
{
  if (ifan_fanspeed_timer) {
    return ifan_fanspeed_goal;                     // Do not show sequence fanspeed
  } else {
    /* Fanspeed is controlled by relay 2, 3 and 4 as in Sonoff 4CH.
      000x = 0
      001x = 1
      011x = 2
      101x = 3 (ifan02) or 100x = 3 (ifan03)
    */
    uint8_t fanspeed = (uint8_t)(TasmotaGlobal.power &0xF) >> 1;
    if (fanspeed) { fanspeed = (fanspeed >> 1) +1; }  // 0, 1, 2, 3
    return fanspeed;
  }
}

Huh. I found this post that let me believe that the author made a Pull Request that got accepted: https://www.breznet.com/sonoff-ifan03-home-assistant/

The post claims that the original handling (original firmware) is wrong and that the relays should not be powered on concurrently.

[barbudor]

@sotiris-bos He submitted and merged the PR on it's own fork. Can't any clue that he ever been submitted to arendst/asmota
Nevertheless I have no idea if his claim is correct or not

[arendst]

ifan02 and ifan03 have been around for years. I have them both and they control the fan exactly as advertised using tasmota so I see no reason why to change stable code other than the fact that ifan04 may work differently then the previous ones.

Let other ifan04 users speak if they find fan control wlrks different on ifan04 compared to the previous ones.

[dphuk]

Hi, I flashed an iFan04-H today (UK 240V) and after loading the iFan04-H template I noticed that low worked as expected, medium was very fast and high was exactly the same as medium. After looking at the code and the links above, I modified and compiled the Tasmota code to replace "xdrv_22_sonoff_ifan.ino" on line 30 with:
const uint8_t kIFan03Speed[MAX_FAN_SPEED +2] = { 0x00, 0x01, 0x02, 0x04, 0x05, 0x06 };
This now sets 3 different speeds and works correctly. I've not changed any of the hardware, nor do I have any previous models to compare this with I'm afraid.

[HonzaCZ]

Hello, I have iFan04-H (230 V) and CasaFan 9313210 MIRAGE, and I can confirm, that this patch works well and makes sense - at least for this case.

With standard Tasmota (14.1) there is no difference between speed level 2 and 3, and there is full power startup procedure only for speed 1.

With mentioned patch there is useful speed 2. All 3 speeds are now comparable to factory controller (CasaFan 85220 FB-FNK Powerboat). And in addition there is full power startup sequence also for speed 2.

Unfortunately I have no iFan02 or -03, so I can not compare settings and behavior for this devices. But for iFan04-H I would recommend adding some option to involve modified code. E.g. exclusive driver for iFan04, some setOption or at least adding constant for easy build-time configuration.

Something like:

#ifdef USE_SONOFF_IFAN4_ALT
    const uint8_t kIFan03Speed[MAX_FAN_SPEED +2] = { 0x00, 0x01, 0x02, 0x04, 0x05, 0x06 };
    const uint8_t kIFan03Sequence[MAX_FAN_SPEED][MAX_FAN_SPEED] = {{0, 4, 5, 3}, {0, 1, 2, 3}, {0, 1, 2, 3}, {0, 4, 5, 3}};
#else
    const uint8_t kIFan03Speed[MAX_FAN_SPEED +2] = { 0x00, 0x01, 0x03, 0x04, 0x05, 0x06 };
    const uint8_t kIFan03Sequence[MAX_FAN_SPEED][MAX_FAN_SPEED] = {{0, 2, 2, 2}, {0, 1, 2, 4}, {1, 1, 2, 5}, {4, 4, 5, 3}};
#endif

[ferbulous]

Glad I found this fix for speed 2 going too fast with ifan04
This has been bugging me ever since it's installed and I couldn't figure out what's the best way to deal with this if I needed to change the capacitor that came with the ifans.
Will try it as well on ifan03

[arendst]

Let me find a way to easily add this fix ...

[arendst]

Latest dev branch v14.1.0.4 contains a fix for iFan04-H.

To use it load and activate below template:

{"NAME":"Sonoff iFan04-H","GPIO":[32,3200,5735,3232,0,0,256,512,226,320,225,227,0,0],"FLAG":0,"BASE":71}

[sotiris-bos]

Flashed my ifan04-H, now fanspeed 1 is 7w and fanspeed 2 is 13w, so works as expected!

Thank you!

[HonzaCZ]

To use it load and activate below template:

Works pretty well! Thank you!

[xoxys]

I have a slightly different problem. For my fan, even step 1 is way too fast compared to the original controller. Is there any way to customize the fan speed for the presets?