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High pressure keeps tripping, cleaned coil and added gas

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Did you add a txv? If high pressure don't add anymore gas.

Posted on Dec 11, 2008

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I was asked a question when applying for a job,not HVAC cert, Thank you for any info that I may use next time. Unit trips due to high condenser pressure, what should be checked before resetting?


Clean condenser coil. If the outdoor coil is dirty it will not reject its heat into the atmosphere and can cause a high temp/pressure situation. I've had them interviews too.

Jul 02, 2015 | Heating & Cooling

1 Answer

Our Rheem Classic Air Conditioner Unit keeps tripping the reset button or something and we have to run out and trip it. Well today it won't turn back on.


What's probably happened is that your outdoor unit has overheated due to a high pressure/high temp situation. The reset button at the base of the o.d. unit is a HIGH PRESSURE RESET. This safety is factory installed to prevent the unit from operating under an excessive(per design) pressure.
•The o.d. coil needs to be cleaned
•The o.d. fan motor needs to be replaced
•The run capacitor(s) at the o.d. unit need to be replaced
•There is a restriction in the refrigerant cycle
Its also possible that a component has faulted, along with a high pressure issue. 1 problem can cause another. The reset opening sometimes let's us know something is wrong and its time to repair the problem before it gets worse. Its hard to say what to do now. If it was still opening the pressure switch you could try washing the o.d. coil. Call a tech!

Jun 23, 2015 | Heating & Cooling

1 Answer

Why is my mr slim a/c tripping the main C.B. on start-up, but not every time.


try washing the outside coil with a water hose to see if its kicking out on high pressure and tripping the breaker. Clean the coil well with a spray nozzle.

Aug 01, 2014 | Mitsubishi Electric Mr Slim E12C26426...

1 Answer

Carrier puron 38txa a/c compressor will not turn on


Make sure there is power at the compressor, but first at the contactor (being supplied to contactor ). Power being supplied to contacter (line voltage) ?
Yes, then close contactor manually and if it works then check for 24 volts at the contactor coil. Find 24 volts, then you need a contactor.
No supply (line voltage), then check breaker
Breaker on, then check run capacitor and if good check high and low pressure protection.High pressure = trips on high head pressure (manual reset) then clean condenser coil.
Low pressure trips on low charge (auto reset on restored charge)

Sep 03, 2013 | Heating & Cooling

1 Answer

Carrier ac keeps turning on and off


what is the temp. outside ? If it is doing it when its hot out clean the coil outside could be tripping on high head pressure. If its not make sure the inside fan blower is turning.If its not it could be tripping on low head pressure. If it only runs a short time you probably have a low charge.and it is causing it to short cycle.

Apr 18, 2012 | Carrier Heating & Cooling

1 Answer

Looking for code E3 keeps falshing


E3 Outdoor activation of high pressure switch

Condenser coil is dust blocked.-Clean it. Rpm of fan motor is less-Replace capacitor. If over charged gas- release some gas. Check for continuity for high pressure switch, if no continuity, replace high pressure switch.
Thanks.

Feb 05, 2011 | Cfm Daikin R410a Split System Air...

1 Answer

Our Fujitsu inverter although on 18 degrees and "Cooling" on high is not cooling at all. Just feels like a fan on high


First advise not to keep in 18 degree temp.(Please ask me why in separate question)
You will get better cooling in 23 degree itself. There are many reasons for not getting cold.
1. Dirty filter and coil. Clean it. 2. Check compressor is working. 3.If working, check for gas pressure. 4. If gas pressure is good, check out door fan motor working well. 5. And also clean your condenser coil.

Helpful?

Jan 03, 2011 | Fujitsu 18C1 Air Conditioner

1 Answer

Admrial air conditioner keeps tripping it's plug


Hi, you either have a short in a componant or it may be that the outdoor coil is dirty and will need to be washed out with your garden hose. If it trips but you are able to reset it and it will run for awhile, its a good sign the condenser coil may be plugged causing high head pressure. If it trips and you try and reset it but can't, you have a dead short in a control part, motor, compressor, or what. Try washing this coil but be careful not to bend the aluminum fins as this will make it worse. Please let me know if this solves the problem or not, and if not we can go into it deeper.
Sincerely,
Shastalaker7

Jun 28, 2010 | Heating & Cooling

1 Answer

Unit tripping on high head pressure but has bad pump down selenoi


high head pressure can be a result of a dirty coil have you tried flushing the coil?

Jul 08, 2009 | Heating & Cooling

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