Cleaning and Care, Troubleshooting | Fujitsu R410A instruction

CLEANING AND CARE

•Before cleaning the unit, be sure to stop the unit and turn off the electrical breaker. CAUTION! • A fan operates at high speed inside the unit, and personal injury could result.

•When used for extended periods, the unit may accumulate dirt inside, reducing its performance. We recommend that the unit be inspected regularly, in addition to your own cleaning and care. For more information, consult authorized service personnel.

•When cleaning the unit’s body, do not use water hotter than 40 °C, harsh abrasive cleansers, or volatile agents like benzene or thinner.

•Do not expose the unit body to liquid insecticides or hairsprays.

•If the unit will not be operated for a period of one month or more, be sure to allow the inner parts of the unit to dry thoroughly, in advance, by operating the unit in fan mode for half a day.

Cleaning the Air Filter

•Remove the dust from the air ﬁlters by vacuuming or washing them. After washing, allow the air ﬁlters to dry thoroughly in an area protected from sunlight.

•Dust can be cleaned from the air ﬁlter either with a vacuum cleaner, or by washing the ﬁlter in a solution of mild detergent and warm water. If you wash the ﬁlter, be sure to allow it to dry thoroughly in a shady place before reinstalling.

•If dirt is allowed to accumulate on the air ﬁlter, air ﬂow will be reduced, lowering operating efﬁciency and increasing noise.

TROUBLESHOOTING

Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL” (Reverse Cycle).

In the event of a malfunction (burning smell, etc.), immediately stop operation, turn off the

WARNING! electrical breaker, and consult authorized service personnel.

Merely turning off the unit’s power switch will not completely disconnect the unit from the power source. Always be sure to turn off the electrical breaker to ensure that power is completely off.

Before requesting service, perform the following checks:

	Symptom	Problem	See Page

NORMAL	Doesn’t operate immedi-	• If the unit is stopped and then immediately started again, the
FUNCTION	ately:	compressor will not operate for about 3 minutes, in order to
		prevent fuse blowouts.	—
		• Whenever the electrical breaker is turned off then on again, the	—

		protection circuit will operate for about 3 minutes, preventing
		unit operation during that period.

	Noise is heard:	• During operation and immediately after stopping the unit, the
		sound of water ﬂowing in the air conditioner’s piping may be	—
		heard. Also, noise may be particularly noticeable for about 2 to	—

		3 minutes after starting operation (sound of coolant ﬂowing).

		*• During Heating operation, a sizzling sound may be heard
		occasionally. This sound is produced by the Automatic Defrosting	12
		operation.

	Smells:	• Some smell may be emitted from the indoor unit. This smell is
		the result of room smells (furniture, tobacco, etc.) which have	—
		been taken into the air conditioner.

R410A specifications

Fujitsu R410A is a state-of-the-art refrigerant commonly used in air conditioning systems and heat pumps. Recognized for its superior thermal efficiency and environmental considerations, R410A has become a popular choice among manufacturers and consumers alike.

One of the standout features of Fujitsu R410A is its high energy efficiency. This refrigerant operates on a higher pressure than traditional refrigerants like R22, which allows for better heat exchange and thus improves the overall performance of HVAC units. The efficiency is evident in both cooling and heating capacities, which contributes to reduced energy costs for end users. As energy efficiency becomes increasingly important, R410A meets the demands of modern consumers looking for sustainable solutions without sacrificing comfort.

Fujitsu incorporates advanced technologies in their R410A systems to enhance performance further. The variable speed inverter technology found in many Fujitsu air conditioning systems allows for more precise temperature control and improved efficiency. By adjusting the compressor speed according to the cooling or heating demand, these systems can operate at a lower capacity when required, reducing energy consumption and maintaining indoor comfort more effectively.

Another characteristic of Fujitsu R410A is its low global warming potential (GWP). While traditional refrigerants have raised concerns about their impact on climate change, R410A has a significantly lower GWP, making it a more environmentally friendly option. The use of R410A helps meet international regulations aimed at reducing greenhouse gas emissions, positioning it as a sustainable choice in the HVAC industry.

Additionally, Fujitsu units utilizing R410A are known for their quiet operation. Advances in design and engineering minimize noise levels, contributing to a more pleasant indoor environment. Noise-reduction technologies, combined with efficient airflow management, ensure that users can enjoy comfort without disruptive sounds.

Furthermore, Fujitsu provides robust support and maintenance services for R410A systems, ensuring optimal performance over their lifespan. Their commitment to reliability is reflected in the build quality and design of the units, which are engineered for longevity and dependability.

In summary, Fujitsu R410A is a premium refrigerant characterized by high energy efficiency, advanced inverter technology, low global warming potential, and quiet operation. These features make it a preferred choice for modern air conditioning and heating solutions, affirming Fujitsu's commitment to innovation in the HVAC industry while prioritizing environmental responsibility.