Free English PHILIPS CX5120 (01) PDF document. Download the PDF, use the online viewer, or browse the FAQs for easy troubleshooting.


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What safety precautions should be followed when using the PHILIPS CX5120?

Do not let any liquid or flammable detergent enter the appliance to avoid electric shock and/or a fire hazard.

Do not cover the device to avoid overheating and fire.

Some parts of the product can become very hot and cause burns. Continuous supervision is required where children and vulnerable people are present.

Keep textiles, curtains, beddings, or any other flammable material a minimum distance of 1 m from the air outlet.

Do not block the air inlet and outlet.

Do not insert fingers, sticks, or other objects into the machine.

Do not use the appliance near gas appliances or fireplaces.

Do not spray flammable materials such as insecticides or fragrance around the appliance.

Only plug into a socket on the wall; do not use an extension cord.

Always place and use the appliance on a dry, stable, and horizontal surface.

Do not use the appliance in surroundings with high humidity such as the bathroom, toilet, kitchen, swimming pool, or any outdoor environment.


How do I set up the Wi-Fi connection for the first time on my PHILIPS CX5120?

1. Download and install the Philips “Air+” app from the App Store or Google Play.

2. Put the plug of the Heater in the power socket and touch the power button to turn on the Heater.

3. The Wi-Fi indicator will blink for the first time.

4. Make sure that your smartphone or tablet is successfully connected to your Wi-Fi network.

5. Launch the “Air+” app and click on “Connect a New Device” or press the “+” button on the top of the screen. Follow the onscreen instructions to connect the Heater to your network.


How do I reset the Wi-Fi connection on the PHILIPS CX5120?

1. Put the plug of the Heater in the power socket and touch the power button to turn on the Heater.

2. Touch and hold the power button for 3 seconds until you hear a beep.

3. The Heater goes to pairing mode and the Wi-Fi indicator blinks.

4. Follow the steps for setting up the Wi-Fi connection in the app.


How do I turn the PHILIPS CX5120 on and off?

Put the plug in the power socket.

Touch the power button on the appliance to switch on the Heater. The appliance beeps.

Touch the power button again to switch off the Heater.

The appliance starts a countdown for 15 seconds before switching off.

Note: When the Heater continuously runs for 16 hours without any operation, it will be forced to shut down for protection.


How do I switch modes on the PHILIPS CX5120?

Touch the mode switch button to switch between the following modes:

Auto mode

High mode

Low mode

Ventilation mode


How does Auto mode work on the PHILIPS CX5120?

In this mode, your device will do the work for you. Based on the sensor data that measures and tracks the temperature in your room, your device automatically selects the heating speed to keep your room comfortable.


What are the differences between High, Low, and Ventilation modes on the PHILIPS CX5120?

High mode: Operates on the highest speed for powerful, rapid heat up of the air in your room.

Low mode: Provides a slight comfortable heated breeze.

Ventilation mode: The device can double as a fan on hot days. The heating will be turned off and the fan delivers a stream of air.


How do I set the temperature on the PHILIPS CX5120?

In the Auto mode, you can adjust the temperature by touching the + or – button. The temperature range is from 1°C-37°C.


How do I use the timer function on the PHILIPS CX5120?

Touch the timer button to set operating hours of the appliance. The timer is available from 0 to 12 hours. 0 hour means no timer is set.

Touch and hold the timer button for 3 seconds to cancel the timer you have set.

In standby mode: After the set timer has elapsed, the Heater will be turned on automatically.

In power on mode: After the set timer has elapsed, the Heater will be off automatically.


How do I activate the oscillation feature on the PHILIPS CX5120?

Touch the oscillation button to activate the oscillation feature on your Heater.


How do I turn the display light on or off on the PHILIPS CX5120?

You can touch and hold the mode switch button for 5 seconds to turn on, or turn off the light of the display panel.


How do I activate the display screen on the PHILIPS CX5120?

After the screen is off, you can either touch the power button, or any other button to wake up the screen.


How should I clean and maintain the PHILIPS CX5120?

Always unplug the appliance before you clean it.

Never immerse the appliance in water or any other liquid.

Never use abrasive, aggressive, or flammable cleaning agents such as bleach or alcohol to clean any part of the appliance.

Regularly clean the outside of the Heater to prevent dust from collecting.

Use a soft, dry cloth to clean both the exterior of the appliance and the air outlet.


How should I store the PHILIPS CX5120?

1. Turn off the appliance and unplug from the power socket.

2. Clean the appliance.

3. Store the appliance in a cool, dry location.

4. Always thoroughly wash hands after cleaning.


Why is my PHILIPS CX5120 not working after plugging it in?

The plug may not be connected properly to an electrical outlet. Check whether the plug is properly connected to a working electrical outlet.

The appliance is equipped with tip-over protection; ensure to locate the appliance in an upright position and on a flat surface.

If the appliance doesn’t produce warm airflow, check if it is on Ventilation mode.

Check your temperature settings in Auto mode. When the set target temperature is lower than the ambient temperature, the heating function will not be triggered.


What should I do if the PHILIPS CX5120 trips the power during use?

The power may exceed the home circuit load. Please unplug nearby high-power appliances on the same electrical outlet and try again.


Why did the PHILIPS CX5120 suddenly stop working?

Check if the timer function of the appliance is on.

In Auto mode, when the target temperature is reached, the heater will stop working, and work again when the ambient temperature is lower than the target temperature.

In Low or High mode, the heater will stop working when the sensor detects the temperature reaches 37 °C, and work again when the temperature becomes lower.

When the temperature exceeds the threshold of the thermal cut-off, the appliance will automatically cut off the power supply. Let the appliance cool down and check if air inlet/outlet is unobstructed before use again.

The heater is equipped with Auto shut off. Without further operation, the appliance will shut off after running for consecutive 16 hours.


What should I do if the PHILIPS CX5120 is too loud?

Relocate the appliance and ensure it’s on a stable, secure surface, and no foreign objects are beneath it.


Why does the PHILIPS CX5120 produce a strange smell?

The first few times you use the appliance, it may produce a plastic smell. This is normal on a new appliance. However, if the appliance produces a burnt smell, turn off the appliance and unplug immediately.


Why does it take a long time for the PHILIPS CX5120 to heat up?

Set to a higher target temperature in Auto mode or switch to High mode, and the appliance will run at higher power and heat up in a shorter time.

Ensure the air inlet/outlet is clean and unobstructed.


What do the error codes on the PHILIPS CX5120 mean?

Error code “Eb”: The control panel has malfunctioned.

Error code “E5”: The temperature sensor has malfunctioned.

Error code “E6”: The appliance is overheating. Turn off the appliance and unplug. Let the appliance cool down for few minutes before use again.

Error code “E9”: It indicates the appliance is in a tilted position. Turn off the appliance, ensure it’s in the upright position and then power on again.


Why is the Wi-Fi setup not successful on the PHILIPS CX5120?

If the router your appliance is connected to is dual-band and it is currently not connecting to a 2.4GHz network, please switch to another band of the same router (2.4GHz) and try to pair your Heater again. 5GHz networks are not supported.

Web authentication networks are not supported.

Check if the appliance is within range of the Wi-Fi router. You can try to place the Heater closer to the Wi-Fi router.

Check if the network name is correct. The network name is case sensitive.

Check if the Wi-Fi password is correct. The password is case sensitive.

The Wi-Fi connectivity can be interrupted by electromagnetic or other interferences. Keep the appliance away from other electronic devices that may cause interferences.

Check if the mobile device is in airplane mode. Make sure to have airplane mode deactivated when connecting to the Wi-Fi network.


What are the technical specifications for the PHILIPS CX5120?

Item Symbol Value Unit
Heat output
Nominal heat output P nom 2.0 kW
Minimum heat output (indicative) P min 1.1 kW
Maximum continuous heat output P max, c 2.0 kW
Auxiliary electricity consumption
At nominal heat output el max N/A kW
At minimum heat output el min N/A kW
In standby mode el SB 0.001 kW
Type of heat input, for electric storage local space heaters only (select one)
manual heat charge control, with integrated thermostat NA
manual heat charge control with room and/or outdoor temperature feedback NA
electronic heat charge control with room and/or outdoor temperature feedback NA
fan assisted heat output NA
Type of heat output/room temperature control (select one)
single stage heat output and no room temperature control [no]
Two or more manual stages, no room temperature control [no]
with mechanic thermostat room temperature control [no]
with electronic room temperature control [yes]
electronic room temperature control plus day timer [no]
electronic room temperature control plus week timer [no]
Other control options (multiple selections possible)
room temperature control, with presence detection [no]
room temperature control, with open window detection [no]
with distance control option [yes]
with adaptive start control [no]
with working time limitation [yes]
with black bulb sensor [yes]
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