User manual MITSUBISHI SEZ-KD35VAL INSTALLATION INSTRUCTIONS

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Manual abstract: user guide MITSUBISHI SEZ-KD35VALINSTALLATION INSTRUCTIONS

Detailed instructions for use are in the User's Guide.

[. . . ] WIRING DIAGRAM ·····························19 5. REFRIGERANT SYSTEM DIAGRAM·······20 6. TROUBLESHOOTING·························21 7. DISASSEMBLY PROCEDURE ···········33 Model name indication INDOOR UNIT ON/OFF TEMP TEMP. ON/OFF WIRED REMOTE CONTROLLER (For SEZ-KD·VA model ) WIRELESS REMOTE CONTROLLER (For SEZ-KD·VAL model ) 1 PART NAMES AND FUNCTIONS Indoor Unit SEZ-KD25VA(L). TH SEZ-KD35VALL(L). TH SEZ-KD50VA(L). TH SEZ-KD60VA(L). TH SEZ-KD71VA(L). TH Air outlet Air outlet duct flange Air inlet Wired remote controller Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. q Operation buttons Set Temperature buttons Down Up Timer Menu button (Monitor/Set button) Mode button (Return button) Start/Stop button Fan Speed button Filter button (<return sign> button) Test Run button Service button (Clear button) MENU BACK PAR-21MAA TEMP. Set Time buttons Back Ahead Timer On/Off button (Set Day button) ON/OFF DAY ON/OFF FILTER MONITOR/SET CHECK TEST Airflow Up/Down button CLOCK OPERATION CLEAR Louver button ( Operation button) To preceding operation number Opening the door Ventilation button Operation button) ( To next operation number 2 q Display "Sensor" indication Day-of-Week For purposes of this explanation, all parts of the display are shown as lit. [. . . ] 4 Check room temperature display on remote controller. Replace indoor controller board if there is abnormal difference with actual room temperature. Turn the power off, and on again to operate after check. Cause 1 Defective thermistor characteristics 2 Contact failure of connector (CN20) on the indoor controller board (Insert failure) 3 Breaking of wire or contact failure of thermistor wiring 4 Defective indoor controller board P1 P2 Pipe temperature thermistor/Liquid (TH2) 1 The unit is in three-minute resume prevention mode if short/open of thermistor is detected. Abnormal if the unit does not reset normally after three minutes. (The unit returns to normal operation, if it has normally reset. ) 2 Constantly detected during cooling, drying, and heating (except defrosting) operation. Short: 90: or more Open: -40: or less 1 Defective thermistor characteristics 2 Contact failure of connector (CN44) on the indoor controller board (Insert failure) 3 Breaking of wire or contact failure of thermistor wiring 4 Defective refrigerant circuit is causing thermistor temperature of 90: or more or -40: or less. 5 Defective indoor controller board 1­3 Check resistance value of thermistor. For characteristics, refer to (P1) above. 2 Check contact failure of connector (CN44) on the indoor controller board. Turn the power on again and check restart after inserting connector again. 4 Check pipe <liquid> temperature with remote controller in test run mode. 67 Check operating condition of refrigerant circuit. P6 (Heating mode) 1 Check clogs of the filter. DC Fan motor (FAN MOTOR/ INDOOR CONTROLLER BOARD) 5 Defective outdoor fan control 6 Overcharge of refrigerant 7 Defective refrigerant circuit (clogs) 8 Bypass circuit of outdoor unit is defective. 5 Check outdoor fan motor. 6~8Check operating condition of refrigerant circuit. P8 Pipe temperature 1 Slight temperature difference <Cooling mode> between indoor room Detected as abnormal when the pipe temtemperature and pipe <liquid perature is not in the cooling range 3 minor condenser / evaporator> utes after compressor start and 6 minutes temperature thermistor after the liquid or condenser/evaporator pipe · Shortage of refrigerant is out of cooling range. · Disconnected holder of pipe Note 1) It takes at least 9 minutes. evaporator> thermistor Note 2) Abnormality P8 is not detected in · Defective refrigerant circuit drying mode. 2 Converse connection of Cooling range : -3 deg ] (TH-TH1) extension pipe (on plural units TH: Lower temperature between: liquid connection) pipe temperature (TH2) and con3 Converse wiring of indoor/ denser/evaporator temperature (TH5) outdoor unit connecting wire TH1: Intake temperature (on plural units connection) 4 Defective detection of indoor <Heating mode> room temperature and pipe When 10 seconds have passed after the <condenser / evaporator> compressor starts operation and the hot temperature thermistor adjustment mode has finished, the unit is 5 Stop valve is not opened detected as abnormal when completely. condenser/evaporator pipe temperature is not in heating range within 20 minutes. Note 3) It takes at least 27 minutes to detect abnormality. Note 4) It excludes the period of defrosting (Detection restarts when defrosting mode is over) Heating range : 3 deg [ (TH5-TH1) 1~4 Check pipe <liquid or condenser / evaporator> temperature with room temperature display on remote controller and outdoor controller circuit board. Pipe <liquid or condenser / evaporator> temperature display is indicated by setting SW2 of outdoor controller circuit board as follows. Conduct temperature check with outdoor controller circuit board after connecting `A-Control Service Tool(PAC-SK52ST)'. ( ) 23Check converse connection of extension pipe or converse wiring of indoor/outdoor unit connecting wire. 26 Error Code Abnormal point and detection method Abnormality of pipe temperature thermistor / Condenser-Evaporator (TH5) 1 The unit is in three-minute resume protection mode if short/open of thermistor is detected. [. . . ] (a) (a) (a) (a) (D) (E) (a) Tab Fig. Removing the drainpan (1) Pull out the drain pan in the direction of the arrow 1. Fig. 5 Note · Drain the water out of the drain pan before removing it. · To avoid dew condensation, use insulated screws in the places marked with circles in Figure 6. Insulation material (E) Fig. [. . . ]

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