Why petra package unit error codes 29/30/31

There could be several reasons why a Petra package unit did not start after a fan was changed. Here are some possible causes:

Wiring issues: When changing the fan, it's possible that a wire was disconnected or connected improperly. This can prevent the unit from starting. Check the wiring connections to make sure they are secure and in the correct location.

Capacitor failure: The capacitor is an electrical component that helps the fan motor start and run. If the capacitor is faulty, the fan may not start. Check the capacitor with a multimeter to make sure it is within the acceptable range of values.

Motor failure: If the motor has failed, the fan will not start. Check the motor with a multimeter to see if it is receiving power and if it is within the acceptable range of values.

Thermostat issues: The thermostat may not be sending the correct signals to the unit to start up. Check the thermostat and make sure it is set to the correct temperature and mode of operation.

Circuit breaker tripped: Check the circuit breaker to make sure it hasn't tripped. If it has, reset it and see if the unit starts.

Control board failure: The control board is the brain of the unit and controls all of its functions. If the control board has failed, the unit may not start. Check the control board for any signs of damage or malfunction.

If none of these solutions solve the problem, it may be best to consult a certified technician who can diagnose and repair the issue.

Question edited to add make. Post moved to Renault Megane.

Hello
Clear parts information is important is wiring issues. Always include make, because that puts you in the right Category, rather than the generic 'Cars and Trucks'. Also, please don't use abbreviations like 'upc pph 2'. The correct search query for this is

year make model (part) wiring schematic

https://www.google.com/search?q=megane+2+1.6+2005+upc+pph

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Need model number of onboard controller.

Why not contact Petra? Here is the link to their website which has contact details and product information.

https://www.petra-eng.com/product/apx

Hello, Petra -

You have not stated the make and model of your refrigerator. Therefore, I have to guess what the error code FF means.

It MAY mean there is a problem with the freezer fan. The fan could be defective and need to be replaced. Or, there is ice built up causing the fan not to operate.

Or, the FF error code could mean the temperature control in the freezer has failed and the freezer temperature is rising.

Depending upon the manufacturer and model number of your refrigerator, the FF error code may mean something else.

Best wishes.

Sir petra package unit coming error code 4 cooling

Mentioned here

https://www.google.com/search?q=Petra+3+phase+split+package+air+conditioner+showing+E4+Error

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A 9-pin serial connection must be available on your computer to connect a PhotoMAX Fun! Flash 640 digital camera. This camera model does not have a USB driver, so a USB-to-serial adapter will not function properly.

Error code 402 indicates an issue with the SmartMedia card. Make sure that the memory card is properly inserted into the camera. If the card is not the one that was originally packaged with your camera, check to make sure that it meets the camera's requirements. The PDC 640 digital camera accommodates SmartMedia cards at 2 MB, 4 MB and 8 MB capacities. If the condition persists after checking the above, the SmartMedia card may be faulty or corrupted and in need of replacement.

Error code 402 indicates an issue with the SmartMedia card. Make sure that the memory card is properly inserted into the camera. If the card is not the one that was originally packaged with your camera, check to make sure that it meets the camera's requirements. The PDC 640 digital camera accommodates SmartMedia cards at 2 MB, 4 MB and 8 MB capacities. If the condition persists after checking the above, the SmartMedia card may be faulty or corrupted and in need of replacement.