Question about Sunforce 11260 Pure Sine Wave Inverter

Open Question

My Sunforce 2500 W inverter alarm randomly comes on and the short circuit output error code (o.5.b) even though I have no load connected. Happens maybe once every 8 hours. Also, when using the key chain remote the unit turns off and no error codes can be obtained from a shutdown. Is this normal?

Posted by on


3 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 384 Answers

SOURCE: I'm considering buying a Sunforce 11260 2500W sine

Numbe one reason can not afford it.

Posted on Jul 23, 2009

  • 2 Answers

SOURCE: The Sunforce 2500 pure sine wave inverter displays

Went to a free website with industry professionals sharing their knowledge instead of signing up for more ways to spend what little money I have.

Posted on Nov 01, 2009

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Are there internal fuses in the Sunforce 11260 Inverter.

The inverter may not be suitable for use with an inductive load such as a vacuum cleaner.

May 28, 2018 | Sunforce 2500 Watt Pure Sine Wave Inverter...

1 Answer


Hi, here is the error codes that I could find for you, it seems you are overloading the inverter. That means you cannot connect a kettle or other heavy load to the output. See all error codes below, hoep this helps.

Problem: The AC load will not operate, error code shows on digital
display and alarm is sounding.
Error Possible Cause Solution
E01 Low voltage shutdown because battery is discharged.
Recharge battery. Shorten cables or use heavier cables.
E02 Over-voltage shutdown because of high input voltage.
Verify the charging system is properly regulated and the battery
is 12 V nominal.
E03 The AC product(s) connected are rated at more than the
inverter's continuous power rating; overload shutdown has
occurred. Use a product with a power rating within the inverter's continuous power rating (see Table 3).
E04 The inverter has overheated due to poor ventilation.
Overheating shutdown has occurred.Turn inverter off and allow to cool for 15 minutes. Clear blocked fan or remove objects covering unit. Move the inverter to a cooler place. Reduce load if continuous
operation is required.
E05 The AC products connected have a surge power that exceeds
the Digital Inverter's surge capability or the AC products connected are short-circuited and shutdown has occurred.The products exceed the inverter's surge capability. Use a product with a starting surge power within the Digital Inverter's capability.

Nov 14, 2014 | Cameras

1 Answer

I am using 2500 cobra inverter .when i go to plug in extention cord led comes up ( OPP ) and and i do know what that stsnds for ? no power

Short Circuit Protection - OPP

If the

AC output of the inverter is shortcircuited

for one second or more,

it will shut down to protect itself.

The meter will flash as shown to

indicate Short Circuit Protect and

an alarm will sound.

To restore normal operation,

disconnect the short circuit and

turn the unit

Off and On again
using the

Power Button.

Current flowing down an unintended path, try a new extension cord

Apr 15, 2012 | Cobra CPI-2575

1 Answer

Cobra inverter powers up but no power and it flashes OPP

the OPP error is an indication that the AC load "output" is short circuit. Try disconnecting the AV load-device and attempt to try again. Use a lamp or other suitable to confirm that the inverter is pr is not working properly.

It is possible that the load (device) that you have connected either exceeds the inverters power rating or is in fact shorted and the inverter is working properly.

If the opp flashes with no load attached it is likely that the inverter has developed an internal failure.

Hope this helps?

Mar 27, 2012 | Electronics - Others

1 Answer

Can this model be used on the grid? If not, is there a sunforce inverter that can be used on the grid?

If you meant for the mains supply then it must be connected in series to the load so that in absence of power the invertor takes over and when there is power the supply takes over as it charges the battery.
So have this wiring done with the connection routed from the fuse box or main board.

Sep 30, 2010 | Sunforce 1000 Watt Pure Sine Wave Inverter...

1 Answer

Generac generator on auto runs weekly. light green previuosly green. now red. what causes this??

Hi and welcome to FixYa I am Kelly. Your red LED is telling you that it was 1. overloaded. 2. has low voltage 3. overheated or 4. short in the powered circuit.

OVERLOAD LED (red): Lights up if the generator experiences
a load greater than the rated output, low voltage, overheats or
the powered circuit experiences a short. The output is stopped
even though the engine keeps running.

I do not know which of the 4 conditions caused your red light. If you have the read light with no load I would suspect low voltage from the generator / inverter. If it overheated you will also get the Red LED with no load.

Thanks for choosing FixYa.


Aug 30, 2010 | Kitchen Ranges

1 Answer

Have recently purchased a Sunforce 11264 4500W true sine inverter, shipment pending. trying to find a view of the back side of it to determine the 12V service connections needed, PDF of manual indicates a...

Hi , i'm sorry but i dont really understand your question , assuming the current draw is around 45 amps then 2 /0 GA is fine , just keep your leads from your panel nice and short , the connection kits are sold by sunforce and there plenty of suitable connectors on the market
example link below

Aug 17, 2010 | Sunforce 11264 4500 W Pure Sine Wave...

1 Answer

Aims 5000w inverter

Try shutting down the load completely, then power up the inverter with no connected load. Then bring a little on at a time and see what happens.

If you need further help, I’m available over the phone at

May 21, 2009 | Inverter AIMS Power 2500 / 5000W

Not finding what you are looking for?
Sunforce 11260 Pure Sine Wave Inverter Logo

Related Topics:

61 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sunforce Electronics - Others Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Robert Hunt

Level 2 Expert

169 Answers

Tom Chichester

Level 3 Expert

46069 Answers

Are you a Sunforce Electronics - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides