Generator Problems No Power (Why?)

Fixing generator power problems

What causes generators to stop producing power?

The most common cause of power loss in generators is due to loss of residual magnetism.

This can be lost naturally if you run the generator for too long with no load.

There are many reasons that can cause generator problems no power, keep reading to find out some of these problems and their solutions.

Running too many power devices at the same time can also trip the circuit breaker.

It may restart fine but after a short built-in delay, you find no power in your camper.

best generator parts On Amazon

Below are the steps to follow to fix no power problems

1. Get the voltage regulator.
2. Unplug the two wires (the red and black one) connecting the generator brushes to avoid damaging the regulator.
3. Connect the black wire to the ground battery terminal.
4. Plug-in light and start the motor. Ensure the breaker is on. The red wire should be connected to the battery.
5. Remove the wires and replace the plug.
6. Reset the circuit breaker to restore the power in the camper.

By doing this, your generator should produce power again.

Tip: If these instructions do not help, replace the automatic voltage regulator.

Brushless generator not producing power

Make brushless generator produce power again

A brushless power generator is a very compact and convenient source of electric power. It can be irreplaceable in householding.

If you noticed that your brushless generator not producing power check the following:

1. Firstly, check the load. When the value of the maximum voltage exceeded, the unit may simply not give out power because of the trip

2. Research the state of brushes.

3. Check the winding integrity. One of the common reasons for the malfunction is damage to the winding.

4. Make sure no short circuit between the windings. This may happen, for example, during a breakdown of insulation.

5. Check for an inter-turn short circuit. You can’t verify it by yourself, a special laboratory device is needed. Luckily, this occurs extremely

6. Check if the rotor was demagnetized. But only a professional can diagnose this.

All listed advice is very helpful if a brushless generator not producing power.

It is very useful to know all the possible reasons.

Generator low voltage output

A low voltage of generator can happen due to many reasons. Excessive load on the generator is one of the main causes that lead way to the low voltage of the generator.

This condition can be prevented by connecting loads under the capacity of the generator.

One of the causes that give rise to generator low voltage output is due to the low AVR voltage gain set.

The poor voltage from the generator condition can also happen due to a low-speed control set.

Hence try to avoid this condition by setting the value as per the requirement.

AVR feedback from generator VT can give rise to overcurrent drip and low voltage conditions in the generator.

Mechanical issues like improper working of the turbine are found to be a cause of poor voltage conditions in a generator.

Voltage drop conditions can also happen due to under fueled conditions in a generator.

This condition generally happens due to the clogging of pores.

In order to avoid Undervoltage due to under fueled condition, feel free to do the checking of generator condition at the right intervals of time.

Too high voltage: how to determine it and what the effects could be

How to determine a generator’s output voltage?

Different generators have a different value of output voltage and each one has a fixed such. Normally, watts are used to evaluate the generator’s output.

The wattage itself is determined through taking the voltage and multiplying it by the electrical device’s load capacity in amperage.

In a formula, this solution would look like: watts = volts x amps.

best generator parts On Amazon

What could happen if a generator’s output voltage is too high

A voltage that is too high could potentially trigger overheating which could ultimately lead to early failure in different electronic and electrical items.

Normally, overheating causes an immense, advanced and permanent contamination.

Under different circumstances, some electrical components, like motors, for instance, could benefit from slightly higher voltages since a higher voltage could reduce the current which usually results in lower heat exhaust.

Cooling is a key factor in preserving electrical (as well as electronic) items’ endurance and durability.



With a generator, you are able to convert your chemical or mechanical energy to electric energy.

Generators are used for various functions depending on the type of purpose you would want it to serve.

In this case, I am going to talk about a generator that is used to supply power in your house.

Generator running but no power in the house?

Loss of residual magnetism

Generator Problems No Power (Why)

Generators work by moving electrical conduct through a magnetic field.

Magnetism is very key in the process of power output through magnetism by allow electric power to go through so that it can release power for usage.

Residual magnetism can be lost by connecting the generator when it is not powered or letting it run for too long without connecting it to the output.


Use the electrical drill method to pull back the chuck on the generator.

Pulling the chuck in reverse direction technically excites the generator and makes it to produce electricity.

Generator under voltage problem

What causes the generator under a voltage problem?

1. When the prime mover speed of the generator is too low.

You can adjust the prime mover speed of the generator to the specified rated values.

2. Your generator has some rectifier diodes broken by the generator itself.

You are required to regularly check and replace any broken diodes if any.

You can seek assistance from a generator repair specialized.

3. When the surface of brush contact is too small thus the contact pressure is insufficient hence poor contact.

Adjusting spring pressure is highly recommended to ensure that the contact is firm for electric current transmission.

4. Ground fault or short-circuiting error especially at the field winding or stator winding. Check the problem and fix it.

5. When the brush of the excitation electromechanically brushes is not at its neutral position.

The brush position can be adjusted to its correct position or replace it.
6. When the resistance of the excitation loop is significant.

The magnetic field resistance should be reduced thus increasing the excitation current.

Check for additional winding connections in case of semiconductor excitation generators.



A generator can develop a mechanical issue all over sudden for instance, for instance, you find an RV generator runs but no power.

In most cases what results to portable generators not to produce power could be due to loss of residual magnetism.

This can be easily rectified by pulling the chuck reversely technically to excite the machine, restarting the machine or checking on the circuit breaker.

Sometimes you can try all this and find that the RV generator runs but no power.

Now, in this case, you have to check and ensure that the cables that are used are firmly connected to the generator.

There could be cables that might be disconnected unknowing and reconnecting them solves your problem.

Check on the ports that the wall plugs connect to ensure that there are no loose screws or bolts.

This might make the generator be unstable and make it lose power in the circuit. This makes the RV generator run but no power.


Generator with no voltage.

This means that the generator is running but there is low or no power output from the generator that you are using.

Voltage in this context is the electric potential that can be given out by a generator.

In case it goes down it can be easily noted on the points to which the power is supplied.

Generator troubleshooting no voltage?

Here are several possible means to help you solve the problem.

Start the generator and check the engine rotation speed and see if it is running normally.

Using a volt-ohm meter you can test and check the amount of power produced in volt receptacles.

If it is below the normal you can restart the generator and give it a few minutes to run.

Using your meter you can test and see if it has gone back to normal.

This will help reset the engine rotation.
If it doesn’t work visit a nearby authorized dealer from where you can have it checked.



An inverter generator produces a lot of alternating current electronic power on every engine rotation it makes.

The type of power produced by this inverter generator has to be converted to direct current that can now be used directly on wall outlets.

The power is at a very high voltage and therefore the microprocessors in the inverter convert it to smooth, clean, consistent and stable power that is safe for us.
Your inverter generator not producing power?

Loss of residual magnetism.

Most portable generators use magnetic energy to produce electricity.

This can be easily caused if the generator has not been in use for a long period.

To prevent this you should at least try to ensure that you engage the generator regularly.

Failure of the microprocessors in the inverter to convert the Alternating current to direct current.

This can be very dangerous to the safety of the equipment that is connected to it.

Ensure the inverter is checked by an electrician.

Generator Problem With Voltage

If you’ve been experiencing a loss of voltage with your generator for a while now, then you probably know that it’s due to a loss of residual magnetism.

The following are steps that you could follow when this happens:

1. You first have to locate your generator’s voltage regulator.

2. You will find two wires; one of which is red and the other is black or white.

3. Unplug these wires that are attached to the generator brushes.

4. You have to attach the black or white wire to the ground battery terminal of your generator.

6. The next thing to do is locate the light and begin the motor.

7. You should then attach the battery +12 Volts, which is a red cable, to the red cable you unplugged earlier in the process.

8. After this, be sure to disconnect the wires and replace the plug.

Info: This process then causes your generator to restore the residual magnetism that has been lost, which was why your generator lost voltage in the first place.

Your generator should be functioning again after this.



Generac generator is a standby generator that connects automatically in case of an outage, the generator kicks on immediately after ten seconds of a power outage.

This makes it very efficient for usage.

It runs on natural gas or liquid propane fuel and it has an engine that converts this to produce electric energy.

It turns on and goes off automatically there you do not need to be there to do that.

best generator parts On Amazon

Your Generac generator runs but has no electrical power?

1. Check the ports where you connect your plugs and ensure that they have no particles that could be causing blockages to remove them and ensure your connectors fit firmly.

2. Check the circuit breaker and ensure it is switched on.

It could be electrical connections. Ensure that all connectors are well connected.

3. With some in case if it still doesn’t work disconnect and connect again.

After checking all the simple things and it does not still give power out.

4. Check the alternator if its faulty with the help of an expert get it changed.

Generator Output Voltage too High

Portable generators can help make power available in locations far away from the main grid.

However, there can be a challenge with low or high voltage. Generator overvoltage can result in fires and equipment failure.

Below, we look at what can make generator output voltage too high:

Causes of generator overvoltage

  • Restrictive setpoints are a common cause for generator overvoltage. Ensure to balance the loads to prevent the generator’s fast cutting IN and OUT.
  • AVR failure can also cause a generator to have voltage issues. You may need to contact a generator engineer to have this issue sorted out.
  • Your generator can be affected when lightning hits the power lines or your vicinity.

How to reduce generator voltage

A generator engineer can best correct generator overvoltage. One of the temporary ways to clear the fault is by clearing the alarm in a generator’s control panel and restarting to check if it reappears.

A generator’s output voltage increases, more so, when running machinery. This can cause equipment damage and lost time, both of which are expensive.

You can adjust your power needs in a generator by monitoring its voltage using a voltmeter.

How to Adjust Generator Voltage (step by step)

Generators produce power at rpm. It is vital to set a generator’s power output in relation to the expected load.

Below is a step by step guide on how to adjust generator voltage:

Step 1

It is vital to first consult the manufacturer’s manual before using a generator.

This holds due to differences in capacities and limitations. Failure to comprehend the two can lead to equipment damage.

Step 2

Locate the generator’s voltage dial at the side and adjust the voltage to your power requirements. Note that some generators may not have a voltage dial.

Step 3

Generators that lack a voltage dial are usually fitted with a throttle on the side.

However, some generators will have both a voltage dial and a throttle. You can adjust the generator’s voltage by:

  • Increasing the RPM to increase the voltage.
  • Decreasing the RPM to lower the voltage.

Step 4

Ascertain the amount of voltage required to run your appliances by making use of a voltmeter in the location where the former will be plugged in.

This step is useful if you are going to adjust voltage using the throttle.

However, it is always advisable to first confirm the voltage being emitted from a socket, even if your generator is fitted with a voltage dial to help avoid appliances from being blown up.

Step 5

Finally, you can plug in the appliances you wish to be powered. The above steps will ensure the safety of appliances and users besides the economy in fuel consumption, which can go a long way in ensuring you get value for money when using the generator.

Any power produced beyond the load limit is a waste of fuel and can blow up the appliances in use.

Lack of enough power production can lead to improper functioning of appliances.

Generator Not Putting out Full Power

Fixing Your Low-Power Generator

The most common cause of generators not putting out full power is the loss of residual magnetism.

Apart from residual magnetism, here are some major reasons why your generator does not produce or produces low power:

1. Capacitor and the Alternator

If the generator runs but produces low or no power at all, the first thing that should be checked is the circuit breaker.

A circuit breaker is designed to automatically and safely switch off your generator in case of a power surge.

Another part that is likely to lead to the loss of full power to your generator is the capacitor.

It regulates and induces the voltage to the rotor. Other than the capacitor, the alternator is another component that is likely to be the cause of low voltage to your generator.

This is most common if it has not been in use for a long time.

2. Stator and Automatic Volt Regulator

The rotor is made to rotate in the fixed stator windings that produce electricity.

A test can be done on your generator to determine if there is an open circuit that would indicate damage to your generator.

On the same note, an AVR (automatic voltage regulator) is responsible for balancing the amount of voltage that your generator outputs.

With an adjustment screw, this can be tuned to produce the desired amount of power that you need.

Summarily, several reasons are likely to lead a generator not to put out full power.

It is important to consider checking with an expert technician if the problem is not solved by yourself at home.

Related Articles

Reasons why your generator won’t start

Recent Posts