Mitsubishi Electronics MUY-D30NA, MUY-D36NA, MUZ-D30NA, MUZ-D36NA, U1

MUY-D30NA MUY-D36NA

Contents

Main Page 1TECHNICAL CHANGES PART NAMES AND FUNCTIONS 2 3SPECIFICATION Test condition 3, 4 OPERATING RANGE (1) POWER SUPPLY (2) OPERATION OUTLINES AND DIMENSIONS 4 Page Page 6REFRIGERANT SYSTEM DIAGRAM Unit:inch ) 3.6 2.4 50 MUZ-D30NA MUZ-D36NA MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE ADDITIONAL REFRIGERANT CHARGE (R410A:oz.) Calculation : X oz. = 2.96/5 oz. / ft. x (Refrigerant piping length (ft.) - 25) DATA7 7-2. PERFORMANCE CURVE Cooling MUZ-D30NA MUZ-D36NA Heating MUZ-D30NA MUZ-D36NA Page Page 7-4. STANDARD OPERATION DATA 7-5. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY 7-6. TEST RUN OPERATION (How to operate fixed-frequency operation) 8ACTUATOR CONTROL MUZ-D30NA MUZ-D36NA MUY-D30NA MUY-D36NA 8-3. Relation between main sensor and actuator 8-2. R.V. COIL CONTROL <MUZ> SERVICE FUNCTIONS 9 9-1. PRE-HEAT CONTROL 9-2. CHANGE IN DEFROST SETTING 10 TROUBLESHOOTING 10-1. CAUTIONS ON TROUBLESHOOTING Lead wiring Housing point 10-2. FAILURE MODE RECALL FUNCTION 1. Flow chart of failure mode recall function for the indoor/outdoor unit Operational procedure 2. Flow chart of the detailed outdoor unit failure mode recall function 3. Outdoor unit failure mode table NOTE : Blinking patterns of this mode differ from the ones of Troubleshooting check table (10-3.). Page 0.5-second ON 0.5-second ON ON OFF 2.5-second OFF 2.5-second OFF Outdoor electronic control P.C. board(Parts side) Lighting LED2 LED1 10-3. TROUBLESHOOTING CHECK TABLE Page 10-4. TROUBLE CRITERION OF MAIN PARTS OPERATION / INDICATOR lamp flashes 5-times. Outdoor unit does not operate. 10-5. TROUBLESHOOTING FLOW A How to check inverter/ compressor B Check of outdoor thermistors MUZ-D30/36 C Check of R.V. coil D Check of outdoor fan motor E Check of power supply G Check of LEV F Check of compressor start failure H How to check miswiring and serial signal error (Parts side) I J Electromagnetic noise enters into TV sets or radios 1. Outdoor electronic control P.C. board ( ( ( ( MUZ-D30NA MUZ-D36NA MUY-D30NA MUY-D36NA ( ( { { { 3. Outdoor power board ) 1. Removing the cabinet <"Terminal with locking mechanism" Detaching points> Photo 3 Photo 2 11 DISASSEMBLY INSTRUCTIONS 2. Removing the inverter assembly, P.C. board and power board 3. Removing R.V. coil (MUZ) Photo 4 Photo 5 (Inverter assembly) Photo 6 5. Removing outdoor fan motor Photo 7 Photo 8

Mitsubishi Electronics service manual - page 8

Models: MUY-D30NA MUY-D36NA MUZ-D30NA MUZ-D36NA U1