To pick up a AC unit, especially during high compressor head pressure starting, the 4KW is the bare minimum required depending on the AC btu. If the engine cannot deliver full HP due to engine, or performance issues, it will do as you describe. How many hours on the 4KW? Is it tuned up? Have it load bank tested by a dealer to isolate AC issue from generator.
Is your generator 4 kW or 4000 Model 5500. If 5500 as on the picture over your question the reason may be short in the receptacles or low voltage/ rpm. If 4 kW MicroQuiet, there the reasons may be too much, that you will nead a troubleshooting manual.
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To pick up a AC unit, especially during high compressor head pressure starting, the 4KW is the bare minimum required depending on the AC btu. If the engine cannot deliver full HP due to engine, or performance issues, it will do as you describe. How many hours on the 4KW? Is it tuned up? Have it load bank tested by a dealer to isolate AC issue from generator.
Is your generator 4 kW or 4000 Model 5500.
If 5500 as on the picture over your question the reason may be short in the receptacles or low voltage/ rpm.
If 4 kW MicroQuiet, there the reasons may be too much, that you will nead a troubleshooting manual.