Page 2 - MS MICROPROCESSOR CONTROL ···························································3; MSZ, MSY MICROPROCESSOR CONTROL ···············································6; Indoor unit models; MXZ MICROPROCESSOR CONTROL ·······················································20; Outdoor unit models
1. MS MICROPROCESSOR CONTROL ···························································3 Indoor unit models Outdoor unit models MS-A09WA MU-A09WA MS-A12WA MU-A12WA 1-1. COOL OPERATION················································································31-2. DRY OPERATION ················...
Page 3 - MS MICROPROCESSOR CONTROL; Indoor fan speed control; Initial temperature difference; Coil frost prevention; Initial temperature difference Thermostat; Operation chart
3 MS MICROPROCESSOR CONTROL 1 1-1. COOL ( ) OPERATION MS-A09WA MU-A09WAMS-A12WA MU-A12WA 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. Room temperature minus set tem...
Page 6 - MSZ,MSY MICROPROCESSOR CONTROL; Other protections work as well as in the normal COOL mode.
MSZ,MSY MICROPROCESSOR CONTROL 6 2 2-1. COOL ( ) OPERATION MSZ-A09NA MSY-A15NA MUZ-A09NA MUY-A15NAMSZ-A12NA MSY-A17NA MUZ-A12NA MUY-A17NAMSZ-A15NA MSY-A24NA MUZ-A15NA MUY-A24NAMSZ-A17NA MUZ-A17NA MSZ-A24NA MUZ-A24NA 2. Indoor fan speed control Indoor fan operates continuously at the set speed by FAN...
Page 9 - Time chart of defrosting in HEAT mode (reverse type); In case of the following conditions the operation mode is changed.
9 Time chart of defrosting in HEAT mode (reverse type) set position set speed set position set speed Indoor fan Compressor normal Outdoor fan R.V. coil (21S4) OFF (COOL) OFF Maximum frequency horizontal Horizontal vane Very Low (temperature of indoor coil thermistor > 64 ° F) 30 seconds 30 second...
Page 12 - Function of main parts
12 2-7. INVERTER SYSTEM CONTROL 2-7-1. MUZ-A09/12/15/17 MUY-A15/A17 2-7-1-1. Inverter main power supply circuit POWER P.C. BOARD Powersupply INVERTER P.C. BOARD R64A R64B CT TR821 DB65 X64 L62 L63 C63A C63B C63C DB61 L61 P W V U N CT761 CT781 IPM U W MC V + Booster chopper circucuit SYMBOL IPM C63A/...
Page 16 - -8. OPERATIONAL FREQUENCY CONTROL OF OUTDOOR UNIT
16 w The operation frequency in COOL mode is restricted the upper limit frequency after 1 hour as shown below for dew prevention.It is rated frequency or less. 1 hour Time Maximum frequency Upper limit frequency Rated frequency or less Applied model MUZ-A09 Minimumfrequency Maximumfrequency Minimumf...
Page 18 - Operational frequency; LEV opening degree; (a) Reference value of target discharge temperature
18 (2) Time chart OFF Time Time ON Operational frequency of the compressor Commandedto open Standard opening degree Opening degree is corrected accordingto discharge temperature. Positioning Air conditioner ON Air conditioner OFF(thermostat off) LEV opening degree about 5 minutes <COOL, DRY>ab...
Page 20 - MXZ MICROPROCESSOR CONTROL
MXZ MICROPROCESSOR CONTROL 20 3 3-1. INVERTER SYSTEM CONTROL MXZ-2A20NAMXZ-3A30NA SYMBOL IPM CB1~3 CT1~2 CT61 L PFC R64A, R64B X64 NAME INTELLIGENT POWER MODULE SMOOTHING CAPACITOR CURRENT TRANSFORMER CURRENT TRANSFORMER REACTOR POWER FACTOR CONTROLLER CURRENT-LIMITING RESISTOR RELAY FUNCTION It sup...
Page 28 - Copyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD; -5. DISCHARGE TEMPERATURE PROTECTION CONTROL
New publication, effective Apr. 2006Specifications subject to change without notice. C C Copyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Apr. 2006. No. OBT16 7Made in Japan HEAD OFFICE: TOKYO BLDG.,2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Fan speed is switched accor...