Common inverter problems and their solutions

inverter not charging
Image Credits: Wikimedia Commons

An inverter is a very important device which everyone must own for their homes as well as the offices. This device helps you to get electricity in the most important appliances when there is no power otherwise.  But what if your inverter encounters some problems and thus doesn’t work properly? Well this could lead to several issues such as no lights, no microwave power and several others. Thus it is best to know the common inverter problems along with their solutions so that you can resolve the issues yourself. They are given as follows:

1. Inverter not turning on

Inverter not turning on is one of the most common inverter problems. The few possible causes for the same include tripped inverter, battery disconnected, battery terminals loose, weak battery, discharged battery or battery terminals are reversed etc.  In case the power switch is defective you must take it to service centre for repair.  In case of faulty battery, replace it however if the inverter is tripped then you may need to press the trip reset button given on the device to reset it. If your battery has gone weak, then it is advisable that you charge it for a few hours.  Else if it is old, then it is a good idea to replace it altogether. if the terminals of the battery are loose, check them for corrosion and give them a good cleaning before clamping them firmly.

inverter not turning on
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2. Battery is not getting charged

Another one of the common inverter problems is battery not getting charged.  One reason for this could be a dead battery and in this case the battery must be replaced.  Other possible causes for this could be burnt rectifiers, melted fuses and loose battery connection.  In these cases, you must either get professional help or check battery terminals for corrosion.

Our Pick

If you are looking forward to replace your Batteries, we have some other recommendations as well for you:-

  1. LUMINOUS RC 18000 150 AH Tall Tubular Battery 
  2. V-Guard VJ145 135AH Flat Tubular Inverter Battery 
  3. Exide Powersafe 65AH SMF Battery 
  4. Amaron Inverter 150Ah Tall Tubular Battery
  5. EXIDE INDUSTRIES 150Ah Insta Brite Inverter Ups Battery 
  6. OKAYA HT 7048 (150AH) Tall Tubular Inverter Battery

3. Shortened backup time

Another problem which an inverter can encounter is shortened backup time. This could be due to too much power consumption and in such a case, you must remove the extra load. If battery is not properly charged, then even in that case this problem could crop up.  Also, if the battery has lost electrolyte, then the backup time may become shortened. In this case, top up battery with distilled water regularly. remember that the water level must be maintained between the maximum and minimum water limit.

4. Power inverter working in just the inverter mode

If this problem comes up, then either the input is not connected or the fuse must have melted.  Check the power cable and change the fuse respectively for the above given reasons for a power inverter working just in the inverter mode. However, if the cause is input protector being effective, then you must reset it.  An input protector is basically a protector circuit which saves the inverter in case of high voltage conditions. Some other causes for this common inverter problem include low input and high input etc. What happens is that in case of low input, the Inverter does not switch to main power supply and hence works only in inverter mode. you may need to make sure that you choose a wide range from the UPS if this is the reason for the unit working in inverter mode only.  You can also get a stabilizer installed to fix the issue of voltage.

5. Alarm beeping continuously

A lot of times, the alarm of the inverter may keep beeping continuously.  In such a case, the possible cause could be either overload on the inverter or a stuck cooling fan. Disconnect all the extra load in case of overload. If the problem still doesn’t get resolved, then you may have to take the inverter to the service centre or contact a professional for help. Every inverter has a cooling fan which needs to run as long as the unit is operating. if the cooling fan is not able to maintain a temperature cool enough for safe working, the inverter will shut off automatically or it will give out an audible alarm to inform you that the device needs to be turned off. Similarly, if the fan gets stuck due to some reason and is not able to cool off the inverter, the unit will give out an alarm so as to notify you to shut it off.

6. Power inverter LCD displays false codes

power inverter LCD display false
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Another common problem related to inverters which you may experience is LCD displaying false codes.  In this case, either there is some internal problem in which the inverter circuit may need to be replaced or there is an external issue. If the issue is external, then you may need to check the battery cables, the output and input wires and load etc.

Our Pick

Here are some other battery cables, in case you are looking for their replacement:-

  1. 25 sq mm Battery Connecting Cables (Red and Black, 1ft) 
  2. 35 sq mm Battery Connecting Cables (1 ft Each) 
  3. 16 sq mm Red and Black Battery Cable Pair (3 feet Each) 
  4. 25 sq mm UPS and Inverter Battery Connection Cable (Red, 18-Inches) 
  5. Connect Cables Battery Connecting Cables (16 Sq mm, 4 Feet) 

7.  Noise coming out from Power inverter

Sometimes, you may also hear some noises coming out from your power inverter. It is important to know that every inverter gives out some wind noise which is normal. However if you hear the noise from the fan then your fan may need some cleaning through professionals. In some of these cases, the fan may need to be replaced as well to solve the issue.

power inverter fan noise
Image Credits:

Now that you know the various common inverter problems and their solutions, you can solve the issues yourself at home. However if the problem is beyond your comprehension, then you can contact a professional through Mr Right for inverter not working.

Our Pick

If you are looking for a new Inverter, some of the other best selling Inverters available online are:-

  1. Luminous Zelio 1700 Inverter with Red Charge 18000 150 Ah Tubular Battery 
  2. Luminous Zolt 1100 Inverter + RC 25000 200 Ah Tall Tubular Battery + Trolley

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  1. 1

    Please help me, my inverter battery is fully Charged but the Inverter is not on,showing low battery but when I remove the battery terminal and reconnect it, it work again for 1 month and later not on again showing low battery on the Inverter while the battery is fully Charged can I do help

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    My inverter with inbuilt charger

    The charger is not charging and the cooling fan continuously working once the battery terminal is connected

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  7. 7

    Everything is working in my solar system but the only problem i have os my screen not showing me the load and it is showing me always 0 load on my output side of the screen while everything is working in the inverter and the inverter giving output the issue is only monitoring problem

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  9. 9

    whenever i start my exide home ups,it displays fuse trip, red light with contineous beeping .
    but when i tried to change the fuse, they where in good condition( not melted), moreover when i was inserting the fuse in the fuse slot, the cooling fan was running for some time ,which means that the cooling fan is not stuck.
    Now i want you to please tell me the solution.
    i think the relay transister is not working!
    !!don’t forget to reply!!

  10. 10

    Mecer 3kv runs for less than a 25 seconds and displays error 01 buts fans are ok what are the possible causes

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  12. 12

    i faced UPS problem recently , so i purchased new battery and even after that i face a same problem , load goes off abruptly within minute , but it stays on for more than 20 minutes if i stop my PC in Bios setup .

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  14. 14

    When I switch the inverter to off, the inverter does not shut off. I have confirmed the inverter is on because the kitchen appliances stay on. I have turned the lithium batteries off and back on and other combinations to reset, but nothing works. Your help please? Thank you in advance.

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      Hi my inverter is lighting up but the fan is not working and there is an intermittent beep what do you surgest I do many thanks Graham

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  20. 21

    My inverter switch on with all the lights and gets off next second. Again it get on and off. What might be the issue.

  21. 23

    My inverter tripped on overload and since then it is not turning on and when I connect it to the battery it produces spikes on the battery terminals I have done visual inspection everything seems okay what could be the problem?

  22. 24

    Ew miceotek Invertor installed 10 days back , since the it is showing MAIN ON and CHARGING
    indicator continously. There is no load consumption still CHARGING INDICATOR showing continously.
    Plz explain

  23. 25

    My fortuner inverter is showing some language on the LCD display which I don’t understand nor read. How can I set it back to English?

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    please my synergy Inverter suddenly stopped charging, the display short circuit on the screen , it also displays low battery even when the battery charge is at 47%. how can i solve this problem

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