Dear  all valuable members,

I have a MKS 5 kva inverter. It was running fine and I switch off the outlet power in the night with 3 cell battery showing. Unit turned off after few seconds as it is normal with no solar power and outlet ac power switched off.

But in the morning around 8 am with shinning sun . I found that inverter is still in off with running fan. No display, no light indication, no buzzer sound,only fan running. When I switched on the ac outlet power from the inverter, nothing happened, only fan running. 

I need your valuable feedback.

Regards,

 

Edited October 9, 20195 yr by Sarfraz
Clear the mistakes

23 minutes ago, Sarfraz said:

3 cell battery showing.

Hi Sarfraz

What batteries do you have. I suspect your battery voltage is below the minimum cutoff voltage of the inverter. If that is the case, the only way to get the inverter back on is to get the voltage above that setpoint. 

If you have Pylontechs. the batteries might have switched off when it saw nothing happening from the inverter side. If you have Pylontechs, just switch them all off and on again, then press the red button on the Main battery, that should ensure voltage on the battery connectors and might bring the inverter back on. 

Hope you find a solution quick. 

55 minutes ago, Jaco de Jongh said:

Hi Sarfraz

What batteries do you have. I suspect your battery voltage is below the minimum cutoff voltage of the inverter. If that is the case, the only way to get the inverter back on is to get the voltage above that setpoint. 

If you have Pylontechs. the batteries might have switched off when it saw nothing happening from the inverter side. If you have Pylontechs, just switch them all off and on again, then press the red button on the Main battery, that should ensure voltage on the battery connectors and might bring the inverter back on. 

Hope you find a solution quick. 

Dear Jaco de jongh.

Thanks for your reply.  Dear We have 2 battery banks one bank is 48V  150 AH tubular batteries. Second bank 48V 230 AH tubular batteries for solar.

We have checked with multimeter,voltages are ok for both batteries bank.

are you completely off grid?

System is hybrid  but mostly we keep utility power off.

I think current sharing module of control board having problem because no display coming and no light.

On 2019/10/10 at 1:46 AM, Sarfraz said:

But in the morning around 8 am with shinning sun . I found that inverter is still in off with running fan. No display, no light indication, no buzzer sound,only fan running. When I switched on the ac outlet power from the inverter, nothing happened, only fan running. 

That's certainly weird. Can you tell us exactly what model it is? Or a photo of the bar-code sticker on the side if you're not sure.

I assume by "switched on the AC outlet power" you mean the rocker switch at the bottom of the unit?

You mention two batteries; are the paralleled?

When you say "3 cell battery showing" are you referring to the battery "bar chart" on the inverter's LC Display?

What voltage do you have in setting 29 (Low DC cut-off voltage)?

On 2019/10/09 at 5:46 PM, Sarfraz said:

Dear  all valuable members,

I have a MKS 5 kva inverter. It was running fine and I switch off the outlet power in the night with 3 cell battery showing. Unit turned off after few seconds as it is normal with no solar power and outlet ac power switched off.

But in the morning around 8 am with shinning sun . I found that inverter is still in off with running fan. No display, no light indication, no buzzer sound,only fan running. When I switched on the ac outlet power from the inverter, nothing happened, only fan running. 

I need your valuable feedback.

Regards,

 

 

Hi Sarfraz . Is your inverter connected to the grid . I had the same problem with a offgrid axpert . I connected the inverter to the grid to see if it will charge the batteries . As soon as the AC was switched I heard a relay switch and everything was back to normal .