I recently got a new airconditioner. The fan works on it, but the compressor does not engage. It draws alot of power momentarily, then shuts off. I also bypassed the thermostat, yet the compressor still doesnt start. When the air conditioner tries to start the compressor, the voltage on the power line drops from 115volts to 60volts, it seems like its drawing alot of power when its trying to start the compressor. The air conditioner i bought is a basic model, with mechanical control.
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Re: Haier AC Problem Troubleshoot.
Your compressor is faulty, you could test this with an ohm meter or a mega tester to confirm that you have continuity between windings and earth or that the insulation on one of the start or run windings has overheated and broken down. Before you give up though, you can try to change the compressor capacitor, with same rated microfarad capacitor.
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Using a ohm meter, and the compressor is cool to the touch, and the ac is unplugged, Disconnect the wiring to the ... Failure rate on compressors so far not including. ...Haier 12,000-BTU Energy Star Window Air Conditioner with Remote ESA412K-L. Consumer complaints and reviews about Haier Air Conditioner. Since air .
To start with, if it's plugged in to a 15 amp breaker, and extension cord, the compressor starting up may just be enough to trip the breaker. It will draw close to 15 amps on start-up of compressor, and if there is a light extension cord used to plug it in, that only makes it worse. Make sure you shut all other breakers off in panel except AC, and try it. If you have water heater on hydro, fridge on hydro, and then try to start AC compressor, you'll be way over the 15 amps, especially if it's a light extension cord. Keep in mind, in order for fridge to work, you need 12 volts DC (Battery) power going to back of fridge. If the controls aren't lighting up at top, you've most likely got no 12 Volt DC power going to fridge. Check all fuses as well.
Usually just listening closely will give you a rough idea where to look for problem. When you have the fan on and switch to cool, (with temperature turned down low obviously) do you hear any type of "moaning" sounds from AC unit, or see lights in RV dim slightly indicating that compressor is trying to engage? Is the breaker tripping when compressor tries to engage? Do you hear a "click" from AC unit when switched to cool? If none of that happens, then I'd start thinking thermostat, or compressor relay. Normally if it's a faulty capacitor, the compressor will try to engage but will make a "moaning sound" and usually trip the breaker due to excess current draw. Someone experience in electrical should be able to test relays etc, but whoever does work on it, should be aware that those capacitors, as well as hydro in general are very dangerous to work with. The ("zap",- Shock) that you can experience from a capacitor or hydro, can be fatal.
low voltage issues causes higher amp draw and equipment to run a lot harder. whats causing the low voltage problem to the equipment? high amp draw of the compressor could be causing it to overheat and trip until the compressor physically cools down.
I had a problem with my coleman mach 3 AC, we were at an RV park up at lake shasta CA and the fan would stay on but the compressor would come on for a few seconds and then trip off. It was the motor overload relay on the compressor that was tripping. the RV park was old and apparently the wiring to the panelboard at the RV park was too small, when you are drawing a lot of current there was too much voltage drop across their line, to make up for this the motor tries to draw more current and heats up the motor overload and it trips off. I solved this problem by buying an autoformer from Camping World, it senses a voltage drop and automatically boosts the voltage.
I am now having a seperate problem, the compressor is either locked up or has too much back pressure and trips off the service breaker when trying to start. The only solution I can see with my current problem is to replace the entire unit.