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Re: location of overvoltage protection
Go outside to the condensor, its unlikely that the fuses are there unless it is an older unit. Turn off the power and open the power disconnect box. That is one place the fuses or breaker could be.
In the house you should have an electrical panel usually grey in color. Open the service panel as it should be hinged. Most of the time the fuse or breaker is labeled AC Unit andThe rating should be
anywhere between 25amps-60amps.
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There are failed components in the receiver. The protection mode prevents a fire from starting by those failed components. Lightening strike ruins the majority of components on the circuit boards whether you can see the damage or not. Get an estimate from a repair shop. If it comes back as toast, then get yourself a new unit. Damage from lightening is not usually covered by your home owners policy
Sorry about the lightning storm that could be related. If the fridge side is still working then the compressor is still working that is the good news for the freezer to work you need a fan. The next thing to do is open the freezer door and hold the switch so the freezer thinks the door is closed. There should be a fan running. if the fan is running and blowing hot air. you will need a tech. If you do not hear a fan then start removing shelves and then the covers at the back wall of the freezer. when you find the fan you will need a tester to see if it has power. if it has power but will not turn replace it. Removing the covers will also give you a chance to see if the coils are cold. if they are good if they are hot not good. By coils I am talking about the ones inside not the ones out side (which need to be cleaned once a year).
Best of luck
Find out what the F03 error is for and then check out the appropriate area. If there was a strike of surge the most likely place to look for damage is the area where the electricity first enters into the device.
Seems the is an internal problem due to overvoltage. This could be caused due lightning.
If you are lucky only an internal fuse is blown.
Else the power supply is gone ...
In the worst case also other electronic parts are damaged.
Window unit or outside unit? Start and run caps are large problems,especially after several years operation or a lightning storm. Post more info. A humming sound in a fan or compressor that won't start usually means the capacitor got blown out.. It cost less than $30. (plus service call). LOL
Depending on where you live, there are electrical codes that require a 'disconnect' near the outside unit.. This is to be removed prior to servicing that unit and prevent the service person from getting injured if someone inadvertantly turned it on The humming sound you may be hearing may be the fan motor insise that unit, It is possible that the lightning strike generated a surge that damaged that fan motor winding.. With the protective screen removed and that unit disconnected from power.. try spinning the fan by hand to make sure it is free to turn, then reassemble everything and see if will start up. If it is a 220VAC system then you could also be missing one phase of power..You might want to contract an electrician for that aspect of troubleshooting. Be careful and goodluck..
Had one doing similar recently, and after a thunder & lightning storm. Nothing worked, but kept blowing 2 amp fuse in thermostat, when anything tried, heat or cool. Pulled plastic control box down from inside upper unit (AC) made sure breaker was off, took of plastic cover and smelled inside, and could smell burnt plastic smell. Replaced, control box, that got fan only working. Tried another thermostat , everything worked as it should. Turns out the lightning, or power surge, or whatever, shorted out the thermostat, and control box at same time.