VaughanT

Folks - I am really hoping that someone on this forum has had positive experiences in repairing these inverters. I have a 3KVA inverter which got zapped by an indirect lightning strike. It was in bypass mode at the time of the event but has since then refusing to operate in battery mode (the main relay turns on/off repeatedly) after which it shuts down. In bypass mode - the charger still functions and one is able to navigate through the menu items. I have the capability to do repairs - though this is somewhat difficult without manuals and applicable test equipment. The unit was purchased in 2018 and has performed flawlessly (with the exception of the float bug which i believe is a known issue). I am aware that there are many better alternatives on the market - but this solution I see is one that provides a service as it is. will appreciate any feedback and suggestions Thank you

Folks - I’d be grateful for a recommendation or two on service providers that you have used for repair work done on Axpert inverters. I have one unit where it took out an external 100A fuse on the battery side. The unit was pulled out of service and taken to Rectron. After the unit spent some time there - they were unable to repair it and indicated the main board had failed. This was a 24V, 3kVA (pf - 0.8) Axpert. I have opened up the unit and cannot see any physical internal damage. Vaughan

Hello - could anyone on this forum recommend a hybrid inverter that offers SNMP protocols inbuilt that can be easily interrogated by a remote monitoring system? Vaughan

Folks - how would I get hold of the Modbus registers for a Deye 12kW inverter? We have an open architecture telemetry system that can accept Modbus (via RS485) and would like to see if we can integrate info from this device into it. Vaughan

Ok - I set the utility charge current to 10A last night - the inverter went through its routine and it reached the bulk voltage of 28.2V on the batteries. I’m beginning to think that something may have caused the unit to inhibit the charging?

The fans run at low speed which I would guess is for temperature regulation.

@Coulomb - In my own experience- I’ve recently replaced batteries and could only afford to replace them with 200Ah gel units. The grid is becoming a challenge in SA and at least this is a way I can keep the batteries within a sane level of discharge. When utility returns the inverter refuses to enter bulk charging mode - it simply stops at 27.5V and decides the batteries require no further charging. Approximately 10min later the fans start up and there is some heat dissipation from the unit - but the charge indicator is steady. This happens for a good 30min after AC power was restored. in the past when it enters bulk charging mode the fans speed up and the batteries are charged for an extended period. The batteries are under float charge for extended periods but do not get the necessary bulk charging voltage

Folks - has anyone been able to implement a workaround for the float bug? Ive seen a ton of posts on the problem and it bothers me that Voltronic are unwilling to fix the problem. I’ve tried using the battery eq function on the later firmware version and had some success in simulating the bulk charging voltage on batteries that were unfortunately already damaged though an area outage. Vaughan

Hi folks - Rectron did a main PC board replacement on this 8kVA inverter and for some reason its not connecting to the Wi-Fi. There was no notification from RCT that the Wi-Fi credentials would have been changed. Would appreciate inputs on how to fix it Vaughan

Folks - I’d appreciate some insight into what panels can be recommended and those that one should avoid purchasing. A good mate of mine is to eager to purchase panels and has been offered the JA solar units. this is evidently a mono-crystalline panel with an output of 450W. He has two systems that are to be retrofitted with panels - the inverters being RCT Infinisolar and Axpert Max II (11kVA). Both offer PV inputs with a max voltage of 450V. would appreciate inputs

I have an issue with the inverter. It is operating for some friends and it mysteriously shuts down the moment the AC power disappears- instead of going into battery mode. When I test the transfer from mains to battery and vice Versa - it works fine. The problem is erratic and there are no telltale signs any ideas?

Doesn’t show too much detail - here is a Recent page from Watchpower

Folks - after the fuse fix the inverter has been operating normally. Today at 20:00 when AC power disappeared the inverter shut itself down (for no good reason) and had to be manually restarted. It has been in service since April 2021 at a customer and has performed flawlessly. The present batteries are 4x Narada ND200 and are connected in series. The battery selected is AGM. Would be grateful for guidance Vaughan

I did an inspection of the unit on opening it up. Couldn’t see anything damaged. Also restarted in battery mode - before applying AC mains.

Folks - for those who have encountered this issue before it’s a relatively easy fix. The fuse is installed is a 63LET (tag fast acting device). I contacted Rectron and found out the unit was actually still in warranty and they would provide me with a replacement fuse - which was supplied as a 100A unit. Unsure as to what caused the problem.