I have a Pinguino R410a AC and Heater, and Humidifire. And when i use the Heater part after about 10min. A warning sign whit a triangle with an ! in the triangle.

https://www.justanswer.com/audi/1qbl7-warning-light-showing-yellow-circle-triangle.html

STOP engine light. There is something seriously wrong so do not operate/drive the vehicle before finding and repairing whatever is causing this light to come on!

The yellow triangle with an exclamation mark will typically be accompanied by a message explaining what's gone wrong. Hopefully it will be self-explanatory - such as a low reservoir for the windscreen washer system.

It is called Master Warning sign. Get the car be scanned to know about the root cause of the problem.

Will need to have it daignosed by a professional and perform repair that is needed.
The "check engine" light is on because of a problem that the computer has sensed within the sensors of a faulty circuit.

The triangle is on because the problem is also effecting other modules within the vehicle.

Perform diagnostics to determine problem and repair problem..

Orange triangle sign is called master warning light. When this happens get your car be scanned with the help of diagnostic computer to get to know the problem in any of the systems.

Hi Louie Boy, The triangle sign is a warning indicating that there is a problem that needs attending to. The sign comes on when the self diagnostics in your vehicle detect an error. Take the vehicle for a diagnostic scan and have the problem attended to asap. regards John

Its a tough job. You have to remove the dash panel, including the steering wheel and steering column and then remove the plenum box which involve evacuating the refrigerant system and draining the radiator. Once you get the heater box out, replacing the heater core will take about 10min and then you have to put it all back together and recharge the AC and fill the radiator.

If you are seeing leak problems with the system, you will have to go through this process. If the problem is lack of heat and/or AC control, the problem is more likely the blend door. This is a common fail on the Cherokee.

The triangle with an exclaimation mark in the middle is the Master Warning Light . I havn't had time to check out exactly what it is but is is covered in the service reminders part of the owners manual. Google " 2005 prius warning lights . In the first result , you will find a link to toyotapartsandservice.com where you will find owners manual's etc. ( in english )

I have same engine problem. Triangle signal pop up after I try to start my Prius with a still wet air filter to the car . The engine just run for less than 30 sec. and stopped with the triangle signe pop up. I think this sign will pop up whenever the engine detect certain major function failure. For my case, it was due to retricted air supply to the engine. I have tried Lovebytes suggestion and the triangle sign disappeared with a dry clean filter. My Prius is running good now. This warnig sign may have other implications. Once you try this method and sign still come on. You need to have your car check by garage.
Bellow attach is the answer from Lovebites

posted on Aug 21, 2008 Asker's Rating
Lovebytes
Rank: Apprentice
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I had the same problem. I unplugged the relays from the fuse/relay box under the bonnet. (Top left side) and replaced them. The problem disappeared. (2001 Prius 109,000 miles)