Mitsubishi SRK71ZE-S1- User Manual

- 78 - S Indication section (a) Wireless remote control 1.2.4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Operation control function by remote control switch FAN SPEED button Each time the button is pushed, the indi- cator is switched over in turn. • The above illustration shows all controls, ...

- 79 - (b) Wired remote control (Optional parts) The figure below shows the remote control with the cover opened. Note that all the items that may be displayed in the liquid crystal display area are shown in the figure for the sake of explanation. Characters displayed with dots in the liquid crystal...

- 80 - (2) Unit ON/OFF button When the remote control batteries become weak, or if the remote control is lost or malfunctioning, this button may be used to turn the unit on and off. (a) Operation Push the button once to place the unit in the automatic mode. Push it once more to turn the unit off. (b...

- 81 - EXTERNAL INPUT WIRED REMOCON OPE PERMISSION CUSTOM AUTO RESTART LO TEMP DIRT PREVENT COOL ONLY HI CEIL PANEL 50/60 (4) Custom cord switching procedure If two wireless remote controls are installed in one room, in order to prevent wrong operation due to mixed signals, please modify the printed...

- 82 - Corrects the starting time of next operation bycalculating the temperature difference. (Example) Heating Setting temperature Room temperature Operation starting time Time Setting time 15 min. 10 min. 5 min. earlier earlier earlier ¡ If the difference (= Setting temperature – Room tempera-ture...

- 83 - (c) Details of control at each operation mode (pattern)(i) Fuzzy operation Deviation between the room temperature setting correction temperature and the suction air temperature is calculated inaccordance with the fuzzy rule, and used for control of the air capacity and the inverter command sp...

- 84 - (iii) Hot keep operation If the hot keep operation is selected during the heating operation, the indoor blower is controlled based on the temperature ofthe indoor unit heat exchanger (detected with Th2, indoor unit heat exchanger sensor) to prevent blowing of cool wind. Note (1) Refer to the ...

- 85 - Note (1) When outdoor unit heat exchanger sensor (Th4) temperature becomes 2 ° C or higher, inverter command changes 70 rps to 40 rps. (iii) Ending conditions (Operation returns to the heating cycle when either one of the following is met.) 1 Outdoor heat exchanger sensor (Th4) temperature: 1...

- 86 - Model SRK63ZE-S1 SRK71ZE-S1 Item Inverter command speed 64 rps 74 rps Indoor fan motor 8th speed Outdoor fan motor 6th speed (9) Outline of cooling operation (a) Operation of major functional components in Cooling mode Item Indoor fan ON ON OFF Flap and louver ON or OFF ON or OFF Stop positio...

- 87 - (10) Outline of dehumidifying operation (a) After operating the indoor blower for 20 seconds from immediately after the start of operation, the indoor temperature is checked and, based on the result of check, the cooling oriented dehumidifying or heating oriented dehumidifying is selected. He...

- 88 - (ii) Heating oriented dehumidifying After interrupting the compressor operation for 3 minutes (by the 3-minute timer) following the determination of heating oriented dehumidifying, the unit begins in the heating operation. If the room temperature exceeds the setting temperature by 2ºC or more...

- 92 - (17) Operation permission/prohibition control The air conditioner operation is controlled by releasing the jumper wire (J3) on the indoor control board and inputting the external signal into the CnT. (a) The operation mode is switched over between Permission and Prohibition by releasing the j...

- 94 - ◆ < II > (i) Operating conditions: When all of the following conditions are met. 1 After the inverter command speed is at a value other than 0 rps for 8 minutes, when the indoor heat exchanger tempera- ture is less than 5 ° C. 2 When the inverter command speed is more than 20 rps. (ii) ...

- 98 - (q) Power transistor overheat protection (i) Purpose: In order to prevent the power transistor overheating during operation, faulty controller operations, deterioration, damage and so on occurs. (ii) Detail of operation: 1 Power transistor sensor temperature => 110ºC The compressor is stop...

- 99 - (t) Compressor lock If the motor for the compressor does not turn 1/12 revolution 0.044 seconds after it has been started, it is determined that a compressor lock has occurred and the compressor is stopped. (u) Outdoor fan motor protection If the outdoor fan motor has operated at 75rpm or und...

- 100 - 1.2.5 APPLICATION DATA SAFETY PRECAUTIONS ¡ Please read these “Safety Precautions” first then accurately execute the installation work. ¡ Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points which are related to the strong possib...

- 101 - (1) Selection of location for installation (a) Indoor unit (i) Where there is no obstructions to the air flow and where the cooled air can be evenly distributed. (ii) A solid place where the unit or the wall will not vibrate. (iii) A place where there will be enough space for servicing. (Whe...

- 103 - (c) Preparation of indoor unit (i) Mounting of connecting wires 1) Open the air inlet panel. 2) Remove the lid. 3) Remove the wiring clamp. 4) Connect the connecting wire securely to the terminal block. 1 Connect the connection wire securely to the terminal block. If the wire is not affixed ...

- 104 - [Drain hose changing procedures] 1. Remove the drain hose. ¡ R e m o v e t h e d r a i n h o s e ,making it rotate. Since this air conditioner has been designed to collect dew dropson the rear surface to the drain pan, do not attach the powercord above the gutter. Gutter Pipe accommodation s...

- 105 - (3) Installation of outdoor unit (a) Installation of outdoor unit (i) Make sure that the unit is stable in installation. Fix the unit to stable base. (ii) When installing the unit at a higher place or where it could be toppled by strong winds, secure the unit firmly with foundation bolts, wi...

- 106 - Service Valve(three-way valve) Charge hose(Designed specifically for R410A) Compoundpressuregauge Pressuregauge Gauge Manifold(Designed specifically for R410A) Handle Hi. Vacuum pump Vacuum pump adapter(Anti-reverse flow type)(Designed specifically for R410A) Charge hose(Designed specificall...

- 107 - (d) Explain to the customer on the correct usage of the air conditioner in simple layman’s terms. (e) Make sure that drain flows properly. (f) Standard operation data Model Item SRK63ZE-S1 SRK71ZE-S1 Cooling – – Heating 2.5~2.7 2.6~2.8 Cooling 0.8~1.0 0.7~0.9 Heating – – Cooling 12~14 12~14 ...

- 108 - (ii) When manipulating the remote control mounted on a wall: Make sure that it works normally (i.e., transmission/reception signal is audible) before mounting. Notes (1) T h e r e m o t e c o n t r o l i s c o r r e c t l y f a c i n g t h e sensing element of the air conditioner when beingm...

- 110 - 2) Recessed fitting a) The Electrical box and remote control (shield wire must be use in case of extension) arefirst embedded. (b) Installation of wired remote control (Optionalparts) (i) Selection of installation location Avoid the following locations1) Direct sunlight.2) Close to heating d...

- 111 - (c) Setting functions using the wired remote control (i) The default settings of this unit's functions are as follows: If you want to charge a setting, follow the procedure found in the installation manual and set to your desired setting. For the method of setting, please refer to the instal...

- 112 - (ii) Function setting method 1) Stop the air conditioner 2) Press the SET and MODE buttons simultaneously for 3 seconds or longer. The screen display will be switched as follows: “ SELECT ITEM” “ SET" “FUNCTION SET ” 3) Press the SET button. The unit will enter the function setting mode....

- 113 - When “I/U FUNCTION ” is selected. 1 The screen display will be switched as follows:“ I/U SELECT” “ SET” “I/U No.00” (blinking) 2 Press either or button. Select the indoor unit number that you want to change settings. If only one indoor unit is connected, the indoor unitnumber will not charge...

- 115 - (d) SUPER LINK ADAPTER (SC-AD-E) (i) Functions 1) Transmits the settings from the Super link option to the indoor units. 2) Returns the priority indoor unit data in response to a data request from the Super link option. 3) Inspects the error status of connected indoor units and transmits the...

- 116 - 1.2.6 MAINTENANCE DATA (1) Troubleshooting procedures for electrical equipment (a) Cautions 1 If you are disassembling and checking an air conditioner, be sure to turn off the power before beginning. When working on indoor units, let the unit sit for about 1 minute after turning off the powe...

- 117 - (d) Troubleshooting procedure (If the air conditioner runs) NO NO NO NO YES YES YES YES Note (1) Even in cases where only intermittent stop data are generated, the air conditioning system is normal. However, if the same protective operation recurs repeatedly (3 or more times), it will lead t...

- 118 - (e) Self-diagnosis table When this air conditioner performs an emergency stop, the reason why the emergency stop occurred is displayed by the flashing of display lights. If the air conditioner is operated using the remote control 3 minutes or more after the emergency stop, the trouble displa...

- 119 - (f) Service mode (Trouble mode access function) This air conditioner is capable of recording error displays and protective stops (service data) which have occurred in the past. Ifself-diagnosis displays cannot be confirmed, it is possible to get a grasp of the conditions at the time trouble ...

- 120 - *3: To count the number of flashes in the service mode, count the number of flashes after the light lights up for 1.5 second initially (start signal). (The time that the light lights up for 1.5 second (start signal) is not counted in the number of flashes.) *4: When in the service mode, when...

- 121 - 2 Stop data Remote control setting Fan speed switching Operation switching Displayed data Temperature setting 21 ° C 22 ° C 23 ° C 24 ° C 25 ° C 26 ° C 27 ° C 28 ° C 29 ° C 30 ° C Displays the reason for the stop (stop code) the previous time when the air conditioner was stopped by protectiv...

- 123 - Notes (1) The number of flashes when in the Service Mode do not include the 1.5 second period when the lights light up at first (starting signal). (See the example shown below.) 0.5 sec. 1.5 sec. RUN light (10’s digit) TIMER light (1’s digit) 11-second interval 0.5 sec. OFF ON OFF ON • In th...

- 124 - (v) Room temperature sensor temperature, indoor heat exchanger sensor temperature, outdoor air tempera- ture sensor temperature, outdoor heat exchanger sensor temperature table Units: ° C Buzzer sound (minus) TIMER light(1’s digit) RUN light(10’s digit) Yes (sounds for 0.1 second) 6 5 4 3 2 ...

- 125 - (vi) Discharge pipe temperature table Units: ° C Buzzer sound (minus) TIMER light(1’s digit) RUN light(10’s digit) Yes (sounds for 0.1 second) 3 2 1 0 0 1 2 3 4 5 6 7 -60 -40 -20 0 20 40 60 80 100 120 140 0 1 2 3 4 5 6 7 8 9 -62 -42 -22 -2 2 22 42 62 82 102 122 142 -64 -44 -24 -4 4 24 44 64 ...

- 126 - Service data record form Customer Date of investigation Machine name Error code on previous occasion. Room temperature sensor temperature on previous occasion. Indoor heat exchanger sensor temperature on previous occasion. Remote controller information on previous occasion. Outdoor air tempe...

- 127 - (g) Inspection procedures corresponding to detail of trouble Sensor error [Broken sensor wire,connector poor connection] (Shortcircuit) (Broken wire) Is connector connection good? YES YES NO NO Replace PCB. Correct connection. Replace sensor. Is sensor resistance value good? ◆ S e n s o r t ...

- 130 - Outdoor fan motor error [Defective fan motor, connectorpoor connection, defective PCB] Is connector connection good? YES NO NO Is the output of the outdoor unit’sprinted circuit board normal? Normal NO YES YES Correct connector connection Is DC fan motor resistance value good? Replace outdoo...

- 131 - Operationmode Heat exchangersensor Outdoor airtemperature sensor Discharge pipesensor Compressor overload protection is disabled.(Can be operated.) (i) Checking the indoor electrical equipment (i) Indoor unit circuit board check procedure (ii) Outdoor unit Phenomenon Sensor Shortcircuit Brok...

- 133 - ● Inspection of resistance value of dischargepipe sensor. Remove the connector and check the resist- ance value. See the section of sensor charac- teristics on page 127. ● Inspection of electronic expansion valve To test if there is voltage. (Voltage is only applied to the electronic expansi...

- 134 - Output voltage (ACV) (Example)Self-diagnosis display : Flashes 2 times Measure in this section Operation SW ON 8 ~ 10 sec. 0 1 ◆ Power transistor inspection procedure [Use a tester with a needle indicator for the inspection. (Do not use a digital tester. Check in the AC 300 volt range.)] 1) ...