Friedrich Air Conditioner Troubleshooting Guide

Common Problems with the Friedrich Air Conditioner

#1 Not Turning On

It can be worrying when your Friedrich AC won’t turn on, but here are some possible causes that you can look into:

• Your unit may not be plugged in properly. Make sure that your air conditioner is plugged into a working outlet. If needed, you can test the outlet by plugging in another device or appliance.
• You may have an electrical issue. The problem might be the outlet rather than your unit, so make sure that everything in your home’s wiring is working properly. It’s also worth checking other things like the circuit breaker.

If neither of these is causing the problem, then you’ll have to get your unit professionally checked, as there may be something wrong with the wiring or internal components of your AC.

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#2 Not Blowing Cold Air

There are a few reasons why your Friedrich AC unit isn’t cooling properly:

• Your air conditioner may not be on cooling settings. Before doing anything, check to see if your air conditioner is set to cooling mode. It’s also worth making sure that the AC Is set to a low enough temperature.
• The air filter may need to be cleaned. A dirty air filter can negatively impact the air circulation inside your unit and compromise your unit’s cooling performance. Clean it and make sure to check on it frequently.
• Your unit’s refrigerant levels may be too low. In case you didn’t know, refrigerant is a crucial substance that removes heat from the air. An insufficient amount won’t be able to deliver a satisfying cooling experience, so have this refilled by a professional HVAC technician as soon as you can.
• Your AC unit’s coils may be dirty. Over time, these coils can accumulate a significant amount of dust and dirt, which can prevent them from cooling the air and doing their job. After locating the coils, use a wet/dry vacuum to remove any loose debris before spraying them with soapy water. Leave the cleaner for 5 to 10 minutes before rinsing it off with water.

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#3 Remote Not Working

Here are some possible reasons why your Friedrich AC’s remote control isn’t working:

• You may not be holding the remote close enough. While remote controls allow you to conveniently adjust your air conditioner without being near it, these devices still need to be in close proximity in order to properly communicate with your unit. Try going a bit closer to your AC and see if that helps.
• Your remote control may need to be cleaned. Take a look at the transmitter of your remote and see if it’s been covered by dust and debris. This could be interfering with the communication between your remote and the unit. Dampen a clean cloth and wipe down your remote.
• The batteries of your remote control may be out. The solution might just be as simple as opening up the battery compartment of your remote and replacing the old batteries with new ones.

If none of these reasons is the culprit, then you may need to book an appointment with an aircon servicing and repairs company and have a professional inspect your unit.

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#4 Compressor Won’t Turn On

The compressor ensures that the refrigerant of your unit stays at the right pressure, making it one of the most crucial parts of your AC. If it won’t turn on, then here are some possible reasons:

• Your Friedrich AC may not be getting enough power. Aside from making sure that your unit is plugged in properly to a working outlet, make sure to check for electrical issues, such as a tripped circuit breaker or a blown fuse box.
• Your unit may not be set to cooling mode. Since refrigerant is only needed when lowering the temperature of the room, the compressor won’t turn on if your unit isn’t set to cooling mode or if the temperature settings aren’t low enough to necessitate it.
• Your unit may be running out of refrigerant. If your AC’s refrigerant levels are too low, then the compressor won’t start to prevent any damage. Have your refrigerant levels professionally checked and refilled if necessary.
• There might be an issue with the capacitor or the start relay. These give your compressor the power to start, and any faults will prevent the compressor from working. If this is the case, then any faulty parts will need to be replaced by a qualified technician.
• There might be something wrong with the compressor. If all else fails, have your compressor professionally checked by an HVAC technician to see if it needs to be replaced.

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#5 Leaking Water

There are a few reasons why your Friedrich air conditioner is leaking water:

• The drain line may be clogged with dirt and debris. If your unit comes with a drain line, then check it regularly for any blockages. To remove these obstructions, remove any loose bits with a wet/dry vacuum before going in with a flexible brush or pipe cleaner to tackle stubborn areas. Then, flush the drain line with some soapy water to remove any remnants before reconnecting the line back to your unit.
• The drain pan may be full. If your Friedrich AC has a drip pan, then it might be time to empty it out. While you’re at it, check the pan for any cracks or damages that may be causing water leaks as well.
• The air filter may be dirty. A clogged air filter can cause a wide range of issues in your unit, one of which is that some parts may become frozen. The leak could be caused by the thawing of these parts, so clean your air filter regularly.
• The coils may be frozen. When your coils become dirty enough, they can freeze up, which can leave you with a water leakage problem once they melt. Make sure to remove any debris with a wet/dry vacuum cleaner before cleaning the coils with some soapy water.
• It might actually be a refrigerant leak. There’s a chance that the leaking water isn’t even water at all. Have a professional HVAC technician inspect your unit to see if any cracks may be causing the refrigerant to slowly leak.

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How to Clean a Friedrich Air Conditioner Filter

The air filter is in charge of removing the impurities from the air, but it can become clogged with dust, dirt, and debris over time. If left unaddressed, a dirty air filter can cause a wide range of issues for your air conditioner. Here’s how to clean your Friedrich air conditioner’s air filter:

1. After powering down your AC and unplugging it from the socket, remove the cover of your unit and locate the air filter. If needed, feel free to consult your user’s manual to easily locate the filter.
2. Use a vacuum cleaner to remove any loose dirt and debris from the filter.
3. Once you’ve removed everything that you can, create some soapy water by adding a few drops of dish soap or detergent to some water. If your air filter isn’t that dirty, then simply spray the cleaning solution on. However, for more serious cases, feel free to leave your dirty air filter to soak for a few minutes.
4. Use a clean cloth or brush to clean your air filter with the soapy water.
5. Rinse the filter under clean water to remove the cleaner.
6. Leave it to dry before putting it back inside your unit.

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How to Reset Check Filter Light on Friedrich Air Conditioner

The check filter light is meant to remind you to clean your Friedrich air conditioner’s air filter, which should be done every 2 to 3 weeks, depending on use. To reset the check filter light, just press the fan and speed buttons together and hold them for 3 seconds.

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How Do I Reset My Friedrich Air Conditioner?

Resetting your Friedrich air conditioner may solve any technical problems you may be facing:

1. Locate the reset button by the power cord of your Friedrich air conditioner.
2. Press the reset button and hold it until your AC has turned off.
3. Wait for 5 seconds before turning your air conditioner back on.

However, if this doesn’t resolve the issue, then have your unit checked by a professional instead.

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Common Friedrich Air Conditioner Error Codes

• E1: High pressure system protection
• E2: Anti freezing protection
• E4: High discharge temperature protection of compressor
• E5: Overcurrent protection
• E6: Communication malfunction
• E8: High temperature resistant protection
• EE: EEPROM malfunction
• EU: Limit / frequency reduction due to high temperature of module
• F0: Refrigerant defects
• F1: Indoor ambient temperature sensor is open / small circuit
• F2: Indoor evaporator temperature sensor is open / small circulated
• F3: Outdoor ambient temperature sensor is open / small circulated
• F4: Outdoor condenser temperature sensor is open / small circulated
• F5: Outdoor discharge temperature sensor is open / small circulated
• F6: Limit / decrease frequency due to overload
• F8: Frequency decrease
• F9: Reduction in frequency of due to high air discharge
• FH: Limit / decrease frequency due to anti freezing
• H0: Frequency of decreases due to high temperature resistor during heating operation
• H1: Defrosting
• H2: Static surrender protection
• H3: Overload protection for compressor
• H4: System is abnormal
• H5: IPM security
• H6: Internal motor (fan motor) does not operate
• LC: Failure startup
• U1: Malfunction of phase current detection circuit for compressor
• U3: Malfunction of voltage dropping for DC bus bar
• U5: Malfunction current detection of complete units

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Maintaining Your Friedrich Air Conditioner

The Friedrich line of air conditioners is one of the most popular brands of air conditioners highly regarded for their efficiency, durability, and low maintenance. However, the air conditioners will still need some form of maintenance, and our team at Luce will make aircon upkeep easy for all households!

Give your air conditioner the proper cleaning, maintenance, and repairs it needs to stay durable with our full range of air conditioning services tailored to any popular aircon brand and model across Singapore!

Check out our article on Ruud aircon troubleshooting.