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Residual magnetism of the rotor out. Lift one brush off the slip rings and flash a 12 volt battery on the rings. Reconnect brushes and start engine no output? Repeat then seek help as I need to put my grippers on it to check
Could be lost exciter current. This is how to restore it - Connect 16 or 18 gauge wires to a 12 volt battery. With generator running, insert bare ends of wires into AC outlet - one to Hot, the other to Neutral. Insert and remove quickly. There should be a flash and power will be restored. If not, repeat until you get that flash and output current restored. Using light gauge wires is so that if you are too slow to remove them once AC is restored. they will burn out before the battery suffers from the AC incoming. Be quick and be careful.
Alternators are just alternators and actually produce alternating (AC) current which is rectified by the diodes in the back of the alternator and so produce direct current(DC) which goes to the battery through the battery terminal on the alternator.. However if you want the alternator to work as an alternator you will need some way of exciting the fields (stator) for it to produce AC current as car alternators do not have permanent magnets in the fields. They actually need a partially charged battery to begin charging with. There is no comutator in an alternator . IT has a rotor with slip rings. So remove a diode from the pack --hook up a battery to the regulator and the battery terminal on the alternator will produce AC current
The compressor is on the way out and exceeds the current capacity of the 12v inverter circuit. The compressor runs on 32V AC @50 Hz and the inverter circuit is not able to produce sufficient current when the compressor becomes worn. It still runs on 240V circuit as this is a straight step down transformer from 240 volts and is not current limited..
There is a electronic module that senses load current that pulls the throttle up for high RPM. Fine the module and look it over, you may need to replace it.
To flash the excitor circuit on a coleman ( the generator is built by generac) you need a 12 volt battery. You quickly apply 12 volts via your 120vac recepticals. NO MORE THAN ONE OR TWO SECONDS! Then check you ac voltage. Most of the time the brushes are burnt up when voltage is low. Check the brushes first. You can access them by taking the end cap off of the generator via two to four screws. The brush holder is easy to spot, two wires leading to the front of the amature. Hope this solves your problem.
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