Fujitsu Condensing Unit Fun - wall panel pt2

Not sure what to do with this one, I'm getting a new multi-meter soon so I'll be able to test the comp and see if the windings are indeed bad, or it may just be a case of loose connections burning.

Category:

Science & Technology

Tags:

• HVAC
• Fujitsu
• general
• Condenser
• Air
• Conditioner
• Cycle
• Reverse
• Compressor
• burnout
• R22
• Test
• Demo
• salvage
• Scrap
• motor
• Electric
• mini
• split
• system
• how
• it
• works
• fridgie
• condensing
• coil
• evaporator
• ice

[dnlp69]

the original problem of the burnt connections on the comp may have been just a bad or loose connection causing a high resistance/hot joint!!! the noisy comp, loud clunk and sound of gas equalizing when you switched it of would be because the head/highside pressure was very high as you didnt have the fan shroud on and very little air was passing over the condenser(outdoor heat exchanger) and on heating mode no fan on the condenser(indoor heat exchanger)

Cheers fellow fridgy

[Aussie50]

@dnlp69 yeah, comp ohmed up fine in the end, it runs about 20 hours a week now and has been fine since.

even as a complete system it still sounds like the compressor is trying to escape when I shut it off, but all heat pumps I have do that, its just the comp coming to a dead stop @ max pressure. kinda harsh on it but I can't always wait untill the defrost cycle starts.

[walkingfreak]

so wait how the hell does this thing heat your shop im a bit confused if you reverse the pump it does the reverse process of cooling and heats

[Aussie50]

@walkingfreak in a reverse cycle system (AKA Heatpump) the compressor works the same as cool mode but the reversing valve directs high temp gas coming out of the compressor to the indoor unit where it condenses in the coils.

the outdoor unit becomes the evaporator and blasts out cold air.

I did a good cutaway on a reversing valve a while back.

search for " HVAC Cycle Reversing Valve Exposed" for more info.

[zumerian]

i have seen that in NSW (being a warranty agent) my guess is either moisture bad comp or over current.

assuming it was installed correctly.....!

[Aussie50]

Comp windings passed ohm and megger tests just fine so I'd say it was moisture or inadequate supply wiring

its heating the shop as I type this so I don't think there is any permanent damage, given its run a few hundred hours now.

[Platinium2008]

Hello Aussie50 send a hug from Brazil! Congratulations for the videos! I wonder if you would have the wiring diagram of Fan Motor Fujitsu 12,000 BTU Condenser Condeser Fan Motor Model MFA - 40ARA

200-240 AC There are 6 Wire A big hug from Brazil!

[okendoki]

пизда рулю(((

[fedders4]

You know how there is three wires in a 115volt power cord, is it true that you can split the hot wire in two, to make two hot wire conections to a 230volt DC inverter air conditioner? will that work or do i still have to call the elecrical guy?( A/C Unit is a 9,000 BTU Ductless mini split heat pump with a DC inverter compressor and it only draws 15 amps and uses 230volts)