TROUBLESHOOTING

 

Symptom

Items to check

See Page

 

 

 

 

CHECK ONCE

Doesn’t operate at all:

● Is the Power Supply Plug disconnected its outlet?

 

MORE

 

● Has there been a power failure?

 

 

 

 

● Has a fuse blown out, or a circuit breaker been tripped?

 

 

 

 

 

 

 

● Is the timer operating?

7 - 8

 

 

 

 

 

 

● Is the air filter dirty?

 

 

 

● Air the air conditioner’s intake grille or outlet port blocked?

 

 

Poor Cooling or Heating

● Did you adjust the room temperature settings (thermostat)

 

 

performance:

 

 

correctly?

 

 

 

 

 

 

● Is there a window or door open?

 

 

● In the case of Cooling operation, is a window allowing bright sun-

 

 

 

light to enter? (Close the curtains.)

 

 

 

● In the case of Cooling operation, are there heating apparatus and

 

 

 

computers inside the room, or are there too many people in the

 

 

 

room?

 

 

 

 

 

 

 

● Is the unit set for SUPER QUIET operation?

5

 

 

 

 

 

The unit operates

● Are the Remote Control Unit’s batteries dead?

 

 

differently from the Remote

● Are the Remote Control Unit’s batteries loaded properly?

4

 

Control Unit’s setting:

 

 

 

 

 

 

 

 

If the problem persists after performing these checks, or if you notice burning smells, or the TIMER indicator lamp (Fig. 3 6) flashes, immediately stop operation, disconnect the Power Supply Plug, and consult authorized service personnel.

OPERATING TIPS

Operation and Performance

Heating Performance

Microcomputer-controlled Automatic Defrosting

This air conditioner operates on the heat-pump principle, absorbing heat from outdoor air and transferring that heat indoors. As a result, the operating performance is reduced as outdoor air temperature drops. If you feel that insuffi- cient heating performance is being produced, we recom- mend you use this air conditioner in conjunction with another kind of heating appliance.

Heat-pump air conditioners heat your entire room by recirculating air throughout the room, with the result that some time may be required after first starting the air con- ditioner until the room is heated.

When using the Heating mode under conditions of low outdoor temperature and high humidity, frost may form on the outdoor unit, resulting in reduced operating performance.

In order to prevent this kind of reduced performance, this unit is equipped with a Microcomputer-controlled Auto- matic Defrosting function. If frost forms, the air condi- tioner will temporarily stop, and the defrosting circuit will operate briefly (for about 7-15 minutes).

During Automatic Defrosting operation, the OPERATION indicator lamp (red) will flash.

AUTO Restart

In Event of Power Interruption

The air conditioner power has been interrupted by a power failure. The air conditioner will then restart automatically in its previous mode when the power is restored.

Operated by setting before the power failure.

If a power failure occurs during TIMER operation, the timer will be reset and the unit will begin (or stop) operation at the new time setting. In the event that this (kind of timer fault occurs the TIMER Indicator Lamp will flash (see Page. 3)).

Use of other electrical appliances (electric shaver, etc.) or nearby use of a wireless radio transmitter may cause the air conditioner to malfunction. In this event, temporarily disconnect the Power Supply Plug, reconnect it, and then use the Remote Control Unit to resume operation.

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Friedrich MR09Y1F MR12Y1F, MW09Y1F Operating Tips, Operation and Performance, Auto Restart, Event of Power Interruption

MR09Y1F MR12Y1F, MW09Y1F, MW12Y1F specifications

The Friedrich MW12Y1F, MW09Y1F, MR09Y1F, and MR12Y1F are part of a modern series of air conditioning systems designed for efficiency, reliability, and advanced comfort control. These units are well-suited for residential and light commercial applications, offering innovative features that cater to the specific demands of users, ensuring a comfortable indoor environment throughout the year.

One of the standout features of these units is their impressive energy efficiency ratings. Each model operates with advanced inverter technology, which allows the compressor to adjust its speed according to the cooling or heating demand. This technology not only provides more precise temperature control but also significantly reduces energy consumption compared to traditional air conditioning systems. The enhanced efficiency leads to lower utility bills and a reduced environmental footprint, making these units an eco-friendly choice.

The Friedrich MW12Y1F and MW09Y1F models are equipped with a powerful cooling capacity, suitable for medium to large spaces. The MR09Y1F and MR12Y1F, on the other hand, cater to slightly smaller areas while still delivering outstanding performance. All models come with multiple fan speeds and precise temperature controls, ensuring tailored comfort settings for any conditions.

Moreover, these air conditioning units come with advanced air filtration systems designed to improve indoor air quality. The multi-stage filtration captures dust, allergens, and other airborne particles, making the environment healthier, particularly for individuals with respiratory sensitivities.

User-friendly interfaces make these models easy to operate, with remote control functionalities that allow users to adjust settings from a distance. Some versions also offer smart home compatibility, enabling control via mobile apps or voice commands for enhanced convenience.

Durability is another hallmark of the Friedrich MW and MR series. Constructed with high-quality materials, these units are built to withstand various weather conditions while providing reliable performance throughout their lifespan.

In summary, the Friedrich MW12Y1F, MW09Y1F, MR09Y1F, and MR12Y1F stand out for their energy efficiency, advanced technology, user-friendly features, and robust build quality. These models contribute to comfortable living spaces while prioritizing health and energy savings, making them excellent choices for modern climate control needs.