2

MSZ,MSY MICROPROCESSOR CONTROL

MSZ-A•NA MSY-A•NA MSZ-FD•NA MSY-D•NA MSZ-D•NA

2-1. COOL ( ) OPERATION

MUZ-A•NA MUY-A•NA MUZ-FD•NA MUY-D•NA MUZ-D•NA

1. Thermostat control

Thermostat is ON or OFF by difference between room temperature and set temperature

 

Room temperature minus

Room temperature minus

Thermostat

set temperature (Initial)

set temperature (During operation)

ON

-1.8 °F or more

 

 

 

 

 

OFF

less than -1.8 °F

 

 

 

 

 

 

 

 

 

 

-1.8 °F -1.3 °F

 

 

2.Indoor fan speed control

Indoor fan operates continuously at the set speed by FAN SPEED CONTROL button regardless of the thermostat’s OFF- ON.

In AUTO the fan speed is as follows.

MSZ-A MSY-A

MSZ-FD MSZ-D MSY-D

Fan speed

Room temperature minus

Room temperature minus

set temperature (Initial)

set temperature (During operation)

High

3.1 °F or more

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Med.

between 1.8 and 3.1 °F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

less than 1.8 °F

 

 

 

 

 

5.4 °F

 

 

 

 

 

1.8 °F

 

 

 

3.1 °F

Fan speed

Room temperature minus

Room temperature minus

set temperature (Initial)

set temperature (During operation)

High

2.7 °F or more

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Med.

between 1.8 and 2.7 °F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

less than 1.8 °F

 

 

 

 

 

5.4 °F

 

 

 

 

 

1.8 °F

 

 

 

2.7 °F

3.Coil frost prevention

The compressor operational frequency is controlled to prevent the temperature of indoor heat exchanger from falling exces- sively.

The compressor is turned OFF for 5 minutes when the temperature of indoor coil thermistor continues 37 °F or less for 5 minutes or more.

The indoor fan maintains the actual speed of the moment.

4.Low outside temperature operation

If the outside temperature falls to 64 °F or less during operation in COOL mode, the unit will switch to the low outside tem- perature operation mode.

<Operation>

(1)Outdoor fan control

The outdoor fan rotation speed slows down to maintain sufficient cooling capacity.

NOTE: Even when the unit is in the "thermostat-off" status under the low outside temperature operation mode, the out- door fan rotation does not stop.

(2)Dew drop prevention

When the ambient temperature thermistor reads 10 °F (MUZ-AMUY-AMUZ-DMUY-D), -4 °F (MUZ-FD) or less, as coil frost or dew drop from indoor unit may occur, the compressor turns OFF with the outdoor fan ON for prevention of them.

(3)Outdoor temperature detecting control

To detect the exact outdoor temperature in this mode, the compressor turns OFF but the outdoor fan stays ON for 3 minutes once 1 hour. If the outdoor temperature rises over 64 °F, the unit goes back to the normal COOL mode. If the outside temperature stays below 64 °F, the unit continues to run in the low outside temperature operation mode.

Other protections work as well as in the normal COOL mode.

7

Page 7
Image 7
Mitsubishi Electronics MSZ-FDNA, MS-AWA Msz-Ana Msy-Ana Msz-Fdna Msy-Dna Msz-Dna, Muz-Ana Muy-Ana Muz-Fdna Muy-Dna Muz-Dna

MSZ-FDNA, MUZ-FDNA - U, MUZ-FDNA, MUZ-ANA - U, MUY-ANA specifications

Mitsubishi Electronics has long been a leader in the HVAC (heating, ventilation, and air conditioning) industry, consistently delivering cutting-edge technology and innovative solutions. The MUZ-ANA, MUZ-ANA - U, MU-AWA, MUZ-FDNA, and MS-AWA models exemplify the company's commitment to efficiency, comfort, and advanced engineering.

The MUZ-ANA series is designed for residential and light commercial applications, offering powerful cooling and heating performance. One of the key features is its inverter technology, which allows for variable-speed operation. This means that the system can adjust the compressor speed according to the temperature demands, leading to significant energy savings and consistent comfort levels throughout the space. Additionally, the MUZ-ANA series operates quietly, ensuring a pleasant indoor environment.

The MUZ-ANA - U model takes energy efficiency a step further by incorporating a top-tier seasonal energy efficiency ratio (SEER) and heating seasonal performance factor (HSPF). This model is designed to maximize comfort while minimizing energy consumption, making it ideal for eco-conscious consumers.

The MU-AWA series is specifically tailored for larger spaces, making it suitable for commercial settings. Its robust design ensures reliability even under the most demanding conditions. Key features include advanced filtration systems that improve indoor air quality by trapping particulates and allergens, preferred by businesses aiming for a healthier environment.

The MUZ-FDNA model stands out for its sleek, compact design that fits seamlessly into various installation contexts, making it flexible for diverse architectural styles. It also features a built-in drain pan that helps in moisture removal, preventing mold growth and enhancing system longevity.

The MS-AWA model is particularly noteworthy for its smart connectivity options, allowing users to control their HVAC system via mobile devices. This feature empowers users to monitor and adjust temperatures remotely, providing added convenience and efficiency.

In summary, the Mitsubishi Electronics MUZ-ANA, MUZ-ANA - U, MU-AWA, MUZ-FDNA, and MS-AWA models feature state-of-the-art technology geared towards maximizing efficiency, comfort, and reliability. From inverter technology to smart connectivity, these units are designed to meet modern consumer demands while emphasizing sustainability and performance. With Mitsubishi Electronics, you can be assured of exceptional quality and technological advancement in HVAC solutions.