Hello, The Freezer is a FZ150 Model and there's a red light flashing constantly on the Server

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the flashing maybe door is not sealing check gaskets on door for folds or tears or door not aligned right

Starting the Appliance
Insert the plug into the wall socket. The green pilot light will illuminate to show that the appliance is switched on. The red alarm light will also illuminate until the freezer reaches the correct temperature.

Alarm Light
The red alarm light will illuminate when the temperature in the freezer is higher than the thermostat setting. This alarm light will illuminate if:
- The appliance has just been started.
- Fresh food has been put in the freezer.
- The lid has been left open, opened frequently or open for too long.
The red light will go out when the freezer has returned to the correct temperature

Dado

Hello
check that it defrost elements (heater elements) are working if they working then check if the sensor is working and if the door is sealing when its closed or if the drain is open.
Thanks

check your manual it will state what why its flashing.sound like its getting to hot, might be to near the wall and not getting enough air at the back.adrian,,,,

check the condensor fan if it has one

bring to the nearest service center..

red light flashing on servis fridge freezer

The red light bis indicating that the temp is too high, if you can ,turn the thermostat to a colder setting, if this makes no difference, then you have a serious problem, you will have to call an engineer.
Plz rate this solution,
Thanks.

could be a leak. have it checked by a tech.