Zaptect Go 2 charger set to Solar still not charging with excess solar power for over 2 hours

[americanfillie]

I have set my Zaptec Go 2 charger to solar charging only. The minimal wattage for 1-phase charging is 1.4kWh. Currently I have excess solar power from my panels of 2.3 kWh for over 2 hours. Still the charger won't start charging. See attached screen shots for more detail. Can someone help me understand why the charging session won't start?

[mfuchs1984]

Logfile and configuration?

[americanfillie]

evcc-20260808-192158-debug.log
I'm still looking for the config file. Stay tuned

[americanfillie]

Couldn't locate the evcc.yaml file on Mac. Added screencopies of the Zaptec Go 2 configuration. Hope that works too. Btw, I didn't see any settings what would indicate the charger won't start when there is a surplus. Unclear though what the surplus should be.

[mfuchs1984]

When you go to "Need help" -> "Report problem", you can export view and copy your full configuration, yaml and GUI.

A bit strange in the logs is the repeated logged line [lp-1 ] DEBUG 2026/08/08 17:10:34 phase scale1p in 0s.

It looks like it at least tried to switch to 1p.

[mfuchs1984]

Btw, there is an open issue for Zaptec, see #32565

[americanfillie]

I've seen the open issue. It doesn't seem to relate to mine. Anyways, there was no YAML file. It reads " no yaml configuration". Below the UI file:
{
"charger": [
{"id":1,"name":"db:1","type":"template","config":{"id":"252f6904-9f5d-4850-867c-b73dc1ff4af3","template":"zaptec","passive":false,"password":"","user":""},"deviceProduct":"Zaptec Go"}
],
"experimental": false,
"influx": {"database":"","insecure":false,"org":"","password":"","token":"","url":"","user":""},
"interval": 30,
"loadpoints": [
{"id":2,"name":"db:2","batteryBoostLimit":100,"charger":"db:1","defaultMode":"","limitEnergy":0,"limitSoc":0,"maxCurrent":16,"minCurrent":6,"minSoc":0,"phasesConfigured":0,"planEnergy":0,"planPrecondition":0,"planStrategy":{"continuous":false,"precondition":0},"planTime":"0001-01-01T00:00:00Z","priority":0,"smartCostLimit":null,"smartFeedInPriorityLimit":null,"soc":{"estimate":true,"poll":{"interval":3600000000000,"mode":"charging"}},"thresholds":{"disable":{"delay":180000000000,"threshold":0},"enable":{"delay":60000000000,"threshold":0}},"title":"Zaptec Go 2","ui":{"maxTemp":100,"minTemp":0}}
],
"meter": [
{"id":5,"name":"db:5","type":"template","config":{"template":"enphase","battery_type":"ac","cache":"1s","host":"envoy.local","schema":"http","timeout":"10s","token":"","usage":"pv"},"deviceProduct":"Enphase IQ Gateway","deviceTitle":"Enphase"},
{"id":4,"name":"db:4","type":"template","config":{"template":"homewizard","host":"192.168.68.67","usage":"grid"},"deviceProduct":"HomeWizard Wi-Fi P1 Meter"}
],
"mqtt": {"broker":"","caCert":"","clientCert":"","clientID":"","clientKey":"","insecure":false,"password":"","topic":"evcc","user":""},
"residualPower": 0,
"shm": {"deviceId":"","deviceSerial":"","vendorId":""},
"site": {"aux":null,"battery":null,"consumer":null,"ext":null,"grid":"db:4","pv":["db:5"],"title":""},
"tariff": [
{"id":7,"name":"db:7","type":"template","config":{"template":"energy-charts-api","average":false,"bzn":"NL"},"deviceProduct":"Energy-Charts Market Price"},
{"id":6,"name":"db:6","type":"template","config":{"template":"energy-charts-api","average":false,"bzn":"NL"},"deviceProduct":"Energy-Charts Market Price"}
],
"tariffRefs": {"co2":"","feedIn":"db:7","grid":"db:6","planner":"","solar":[],"temperature":""},
"vehicle": [
{"id":3,"name":"db:3","type":"template","config":{"template":"skoda","autodetectdisabled":false,"cache":"15m","capacity":58,"climaterdisabled":false,"icon":"car","password":"","priority":0,"title":"Skoda Elroq","user":"***","wakeupdisabled":false},"deviceProduct":"Škoda MyŠkoda"}
]
}

[americanfillie]

Update: I tried using the Min+Solar option and then EVCC had no issue to start the Zaptec charger to charge on 1.4kW just on solar. I don’t understand why it wouldn’t on the Solar only setting. Sent from [Proton Mail](https://proton.me/mail/home) for iOS.

…

-------- Original Message --------

On Saturday, 08/08/26 at 20:17 mfuchs1984 ***@***.***> wrote: Btw, there is an open issue for Zaptec, see [#32565](#32565) — Reply to this email directly, [view it on GitHub](#32638?email_source=notifications&email_token=CK5SY47C4HIC4K5Q2SKKJGT5I5VEHA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCNZZGQ2TKNRUUZZGKYLTN5XKMYLVORUG64VFMV3GK3TUVRTG633UMVZF6Y3MNFRWW#discussioncomment-17945564), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/CK5SY43EEH3QIUFXDS7V7K35I5VEHAVCNFSNUABIKJSXA33TNF2G64TZHMZDENRTGY4DGMZYHNCGS43DOVZXG2LPNY5TCMBVG43DAMBUUF3AE). Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for [iOS](https://github.com/notifications/mobile/ios/CK5SY44HFSJ4YHSNLVHVJUT5I5VEHA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCNZZGQ2TKNRUUZZGKYLTN5XKMYLVORUG64VFMV3GK3TUVJTG633UMVZF62LPOM) and [Android](https://github.com/notifications/mobile/android/CK5SY43FXZC3VDGYH7CFZ6L5I5VEHA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCNZZGQ2TKNRUUZZGKYLTN5XKMYLVORUG64VFMV3GK3TUVZTG633UMVZF6YLOMRZG62LE). Download it today! You are receiving this because you authored the thread.Message ID: ***@***.***>

[mfuchs1984]

There is absolutely no difference between them, except that when you connect your vehicle on min+solar, it starts charging immediately. Some vehicles don't like when the charger doesn't offer power on connect. Not sure if that's the case for you, but there is a feature called welcomecharge in evcc to circumvent.

[americanfillie]

I do see a difference: on the solar setting evcc will only initiate charging if there is sufficient surplus solar power. On the min+solar setting evcc will start charging regardless if there is sufficient surplus solar power and continues charging from the grid once there is no surplus solar power. Apparently my max surplus solar power of around 2.5kW is insufficient to initiate a charging session just on solar. I’m more than happy to use the min+solar setting. Just want to better understand what the threshold is for just solar. Sent from [Proton Mail](https://proton.me/mail/home) for iOS.

…

-------- Original Message --------

On Monday, 08/10/26 at 13:56 mfuchs1984 ***@***.***> wrote: There is absolutely no difference between them, except that when you connect your vehicle on min+solar, it starts charging immediately. Some vehicles don't like when the charger doesn't offer power on connect. Not sure if that's the case for you, but there is a feature called welcomecharge in evcc to circumvent. — Reply to this email directly, [view it on GitHub](#32638?email_source=notifications&email_token=CK5SY44O6ZIJRROSYSEN2RL5JGZ6VA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCNZZGYZDQOBZUZZGKYLTN5XKMYLVORUG64VFMV3GK3TUVRTG633UMVZF6Y3MNFRWW#discussioncomment-17962889), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/CK5SY4YFRTLNDOQCBUKTWGL5JGZ6VAVCNFSNUABIKJSXA33TNF2G64TZHMZDENRTGY4DGMZYHNCGS43DOVZXG2LPNY5TCMBVG43DAMBUUF3AE). Triage notifications, keep track of coding agent tasks and review pull requests on the go with GitHub Mobile for [iOS](https://github.com/notifications/mobile/ios/CK5SY425XF2OSVFNN5BTKBL5JGZ6VA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCNZZGYZDQOBZUZZGKYLTN5XKMYLVORUG64VFMV3GK3TUVJTG633UMVZF62LPOM) and [Android](https://github.com/notifications/mobile/android/CK5SY44C7OT3PGFTX3SE3BD5JGZ6VA5CNFSNUABIM5UWIORPF5TWS5BNNB2WEL2ENFZWG5LTONUW63SDN5WW2ZLOOQXTCNZZGYZDQOBZUZZGKYLTN5XKMYLVORUG64VFMV3GK3TUVZTG633UMVZF6YLOMRZG62LE). Download it today! You are receiving this because you authored the thread.Message ID: ***@***.***>

[mfuchs1984]

The threshold is 230V*6A*1p=1380W + your configured residualpower (typically 100W). Only when you configured custom thresholds for the loadpoint or changed the min current, it can be higher.