Mitsubishi Electronics MUZ-FDNA MSZ-A24, Gradation of fan speed in initial, Overload starting

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(2)Cold air prevention control

MSZ-A09/12/15/17 MSZ-FD MSZ-D When the compressor is not operating,

( ) if the temperature of room temperature thermistor is less than 66 °F, the fan stops. ( ) if the temperature of room temperature thermistor is 66 °F or more and

( ) if the temperature of indoor coil themistor is less than 32 °F, the fan stops.

( ) if the temperature of indoor coil themistor is 32 °F or more, the fan operates at Very Low. When the compressor is operating,

( ) if the temperature of indoor coil themistor is 104 °F or more, the fan operates at set speed. ( ) if the temperature of indoor coil themistor is less than 104 °F and

( ) if heating operation starts after defrosting, the fan stops.

( ) if the temperature of room temperature thermistor is 66 °F or less, the fan stops.

() if the temperature of room temperature thermistor is more than 66 °F, the fan operates at Very Low.

NOTE : When 3 minutes have passed since the compressor started operation, this control is released regardless of the temperature of room temperature thermistor and indoor coil thermistor.

MSZ-A24

When the compressor is not operating,

( ) if the temperature of room temperature thermistor is 59 °F or less, or temperature of indoor coil thermistor is less than 64 °F, the fan stops.

( ) if the temperature of room temperature thermistor is more than 59 °F, or temperature of indoor coil themistor is more than 64 °F, the fan operates at Very Low.

When the compressor is operating,

( ) if the temperature of indoor coil themistor is 64 °F or more, the fan operates at set speed. ( ) if the temperature of indoor coil themistor is less than 64 °F and

( ) if heating operation starts after defrosting, the fan stops.

( ) if the temperature of room temperature thermistor is 59 °F or less, the fan stops.

() if the temperature of room temperature thermistor is more than 59 °F, the fan operates at Very Low.

NOTE : When 3 minutes have passed since the compressor started operation, this control is released regardless of the temperature of room temperature thermistor and indoor coil thermistor.

(3)Warm air control (MSZ-FD)

When the following any condition of (a. ~ c.) and the condition of are satisfied at the same time, warm air control works.

a.) Fan speed is used in MANUAL.

b.) When cold air prevention has been released. c.) When defrosting has been finished.

When the temperature of indoor coil thermistor is less than 104 °F.

When warm air control works, the fan speed changes as follows to blow out warm air gradually.

Gradation of fan speed in initial

 

<Time condition>

<Indoor fan speed>

Less than 2 minutes------------

Low

2 minutes to 4 minutes --------

Med.

More than 4 minutes -----------

High or Super high

The upper limit of the fan speed in MANUAL is the set speed.

When the temperature of indoor coil thermistor has been 104 °F or more, or when the set speed has been changed, this control is released and the fan speed is the set speed.

3. Overload starting

When the room temperature thermistor reads 64 °F or more, the compressor runs with its maximum frequency regulated for 10 minutes after the start-up.

4.Defrosting

(1)Starting conditions of defrosting

When the following conditions a) ~ c) are satisfied, the defrosting starts.

a)The defrost thermistor reads 27 °F or less.

b)The cumulative operation time of the compressor has reached any of the set values (40, 45, 55, 65, 75, 85, 95, 105, 115, 125, 150 minutes.

c)More than 5 minutes have passed since the start-up of the compressor.

Set value of compressor operation time (here in after referred to as defrost interval)

This is decided by the temperature of defrost thermistor, ambient temperature thermistor, and the previous defrosting time. For example, the first defrost interval is 40 minutes long, and the second is 45 minutes long. The third and sub- sequent intervals are set to be longer, and less frequent, depending on defrosting time.

The third and subsequent defrost intervals follow any of the three patterns 5 or 10 to 20 minutes longer, the same, or 5 or 10 to 20 minutes shorter compared with the previous defrost interval with the longest 125 minutes and the shortest 40 minutes.

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Contents Revised EDITION-B ContentsRevision a MXZ-2A20NA MXZ-3A30NA MXZ-4A36NA MS-A09WA MU-A09WA MS-A12WA MU-A12WACool Operation MS-AWA MU-AWAOperation time chart Example When the room temperature is under 73 FHorizontal vane Auto Vane OperationMSZ-ANA MSY-ANA MSZ-FDNA MSY-DNA MSZ-DNA Low outside temperature operationMUZ-ANA MUY-ANA MUZ-FDNA MUY-DNA MUZ-DNA MSZ-A MSY-A MSZ-FD MSZ-D MSY-DHeat Operation MSZ Gradation of fan speed in initial MSZ-A24Overload starting DefrostingMode selection Auto Change Over ··· Auto Mode Operation MSZOutdoor FAN Motor Control MUZ-A MUY-AMUZ-FD MUZ-D MUY-D Inverter System Control MUZ-FDFunction of main parts MUZ-A24 MUY-A24 MUZ-D MUY-D At normal operation Outline of simple partial switching methodPurpose of PAM adoption Input current waveform without PAMIntelligent power module Elimination of electrical noiseCompressor Control Method of Rotation Times Sine wave controlOperational Frequency Control of Outdoor Unit MUZ-FD09MUZ-FD12 Heat Mode Cool · DRY ModeExpansion Valve Control LEV Control Pulse MUZ-A09/12/15/17 MUY-A15/17MUZ-A15/17 MUZ-A09/12MUY-A15/17 MUZ-A24260 MXZ-ANA Inverter main power supply circuitProtects transistors from over current Opening before stop → 500 pulse in 15 minutes MXZ-2A20NA MXZ-2A20NA/3A30NACool Heat MXZ-3A30NAMXZ-3A30NA MXZ-2A20NAReceiver LEV MXZ-2A20NA Exclusive LEVMXZ-3A30NA Exclusive LEV MXZ-4A36NACool DRY Heat MXZ-3A30NA MXZ-2A20NAMXZ-2A MXZ-3A MXZ-4A∆RT Operational Frequency RangeHeat Defrosting Control Discharge Temperature Protection ControlOutdoor FAN Control MXZ-4APRE-HEAT Control MXZ-2A20NA- 1 MXZ-3A30NA MXZ-4A36NA Heat Operation DRY OperationHigh pressure protection Made in Japan
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Manual 28 pages 7.08 Kb

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.

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