Faulty 24v 5000watt 110/240VAC split phase power jack inverter
I have a 24v 5000watt split phase 110/240V power jack inverter.
I notice that whenever it is turn on and you are drawing load and the battery is charging. Once the battery reaches about 26.5V or sometimes around 27V it starts to beep and after several seconds it cuts off the output but it is still on but no output.
During the beeping stage the output voltage is fine until it auto cutoff the output. You have to turn it off and turn it on back to get it back to work normal. If the inverter is on and no load is been drawn and the voltage keeps on rising up it does not cutoff the output until it passes 30vdc which is normal for most 24v inverter. So I am wondering if is the load on the inverter causing the premature alarm.
I saw on the net where i see the specs for it and it shows that the high voltage alarm is 27V. So is that the max input voltage it can handle? because if that is the case that is very low as most 24v inverters go up to 30vdc max. I am wondering if the specs is accurate that I saw as it was for the 6000watt version.
The thing that puzzle me is that if it starts to beep around 26.5V or even little higher and you turn it off and turn it on back or you wait till the output auto cutoff it will continue to work little longer even thou the voltage rise pass the voltage it cutoff the last time. So basically if the battery is at 28v for eg. and you turn on the inverter it will continue to work until after awhile it starts to beep and then the output is cutoff. It appears to me that there is no set high voltage cutoff level.
I am wondering if the issue is been cause from the rising of the battery voltage under load or without load or it is cause from high temperature during the 26.5v stage or higher and because maybe when it reaches this voltage level and load is been pulled the fan does not chip in same time hence it cause the alarm to comes on and then the output is cutoff after several seconds as pass.
I can't figure out the root of the problem?
Can someone help me in this regards please? changing the control board would resolve my issue?
Running the fan continuous would resolve it if its a temperature issue?
Also is the fan that come in this inverter a 12v or 24v type?