No it didn't help
I replaced the scc and the other one shows solar charge amps just fine
Will sit with the faulty one and compare to another working one to see if I can pick up any faulty components
No it didn't help
I note that when one transistor blows, its partner in the "totem pole" often is at least damaged, often also blown. So check Q27 carefully.
Best is to order the exact same part, if possible. From Mouser India: https://www.mouser.in/ProductDetail/ON- ... PEWw%3D%3DPlease suggest equelent part number.
current part number is : FGH75T65SHDT
You are so clever Coulomb!coulomb wrote: ↑Tue, 26 Jan 2021, 21:36The Solar Charge Controller (SCC) has its own 8-bit microcontroller with its own firmware. It sends the PV current to the main DSP in the inverter via an internal serial connection. Once a second, the SCC sends a QGS command to the DSP. The first three fields of this command are the PV voltage, battery voltage as measured by the SCC, and SCC output current. Note: the current value sent and displayed by the inverter are battery-side amps, NOT PV amps. So if your panels are at 100 V and your battery is at 50 V, the sent value will be twice the PV current.
How the SCC microcontroller actually measures the current, I don't know. It's likely a current shunt and operational amplifier.
MPPSolar inverter-chargers genuine Voltronic Power manufactured; they were possibly the first reseller. In this post, I admit that I thought that MPPSolar were actually the manufacturers.
I don't know what you mean by "retail builds" in this context. Voltronic Power are strictly Original Design Manufacturers; you can't buy a Voltronic Power branded inverter-charger. It has to be rebranded by a reseller, who then are responsible for customer support. Only when absolutely necessary does a problem escalate to Voltronic, and then only via the reseller. Voltronic don't seem to want to deal with end users at all.Does anyone know if Voltronics uses better components in their "retail" builds ?
My suggestion is to try to avoid a clone, which is not always easy, especially when attempting to buy at the lowest possible price.If they don't I probably will buy a cheaper one as they have to be upgraded anyway.
The only problem with MPPSolar is (or was, I haven't checked lately) is that they dont sell a 58.4V model when an equivalent 64V model exists. I'm not a bug fan of the 64V models, though I realise that sometimes they are needed.