Question about DeLonghi Pinguino PAC-290 Air Conditioner

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DeLonghi Pinguino PAC-290 - Compressor Won't Come On

This PAC was working fine, ran for about 12 hours, then I heard a click, the bottom red light came on (has a triangle with an exclamation point next to it), and the compressor shut off. I pressed the RESET button and the compressor came back on and the red light went out. This time it ran for about 3 hours, I heard the click again, the red light came on again, and the compressor shut off again. I pressed the RESET button again, but the red light stayed on and no compressor. I drained some water (not sure if I emptied all of it), but the light would not go off, and still no compressor. The unit still powers on, green and red light lit, and the fan blows air, but the compressor will not come on. BTW, I couldn't find the plastic hose that came with it, so I used some flex aluminum dryer hose to exhaust the air (got very hot).

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Have you tried to descale the unit? I have this unit and it requires descaling often due to the hardness of the water you are using in said unit.

Posted on Sep 23, 2010


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 104 Answers

SOURCE: DeLonghi Pinguio Pac 45

1. Clean air filer every 2 weeks.
2. clean ACCU and FCU every 3 months.
3. check and re-tight all electrical connection every 6 months.

Posted on Jan 20, 2008

  • 134 Answers

SOURCE: Exhaust Hose DeLonghi PAC-210U replacement

You need to go here


Posted on Feb 14, 2009

  • 10865 Answers

SOURCE: Exhaust Hose DeLonghi PAC-210U replacement

you can contact the company directly at

Contact Center
1-877-882-8604 Monday – Friday
8am – 8pm EST

good luck with this.

Posted on Feb 14, 2009

  • 340 Answers

SOURCE: Descaler

Vinegar is the cheapest. or CLR @ home depot. Tom

Posted on Jun 18, 2009

  • 66 Answers

SOURCE: DeLonghi Pinguino PAC CT90 It is less than a year has quit coolin

Read instructions and see if it says anything about cleaning or filters. A.C units **** air in and there is a filter that probably needs cleaned.Also,while cooling, the vent to the outside should put out warm air. Also, if it is less than a year old, contact the manufacturer and they should help you out. Good luck.

Posted on Feb 19, 2010

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1 Answer

Delonghi air conditioner it has a triangle with an exclamation point inside. What does this mean?

There is a knob on the back and bottom of the air conditioner. Twist off the knob and unplug the little black plug and empty the water into a container. I had the same problem and this worked for me.

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The "leaning triangle" light is the light signifying there is a fault with the traction system (STC) a quick scan with a scan tool will tell you exactly what the fault is.
The only other triangle light on these cars is the triangle with the circle and the exclamation point. Which is either Orange or Red depending on the severity of the issue. And what you described sounds like the STC light to me.

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This happens when you lose your connection, refresh the page and you should be able to continue chatting.

If this doesn't work, then facebook might be doing some maintenance work on their chat module.

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1 Answer

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