Mitsubishi SRK56A- Manuals

8 (2) Outdoor unit Models SRC50HA, 56HA 42.7 Drain hole Elogated hole (2-12X16) Terminal block Service valve (Liquide) Ø 6.35 (1/4'') Service valve (Gas)Ø12.7 (1/2'') Groundterminal 314 14 12 850 203.1 510 136.9 476 286.4 12 50 290 49.6 43.5 328 100.3 15 640 124 34.6 20˚ 20˚ Model SRK408HENF-L3 A 79...

9 1.2.4 Piping system Models SRK50HA, 56HA Heat exchanger Strainer Service valve (Liquid) Flare connecting Service valve (Gas) High pressure switch(63H) (for fan motor control) Roomtemperaturethermistor Piping (Gas) Ø12.7 Piping (Liquid) Ø6.35 Flare connecting Checkjoint 4way valve Suction Muffler C...

11 1.2.5 Selection chart Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be obtained in the following way. Net capacity = Capacity shown on specification ✕ Correction factors as follows. (1) Coefficient of cooling and he...

12 Notes (1) ; denotes magentized relay × : denotes demagnetized relay (2) Th 1 is room temperature thermistor. Th 2 (the heat exchanger thermistor) is the hot start, hot keep, and frost prevention thermistor. (for details, refer to pages 19, 20, 22) (3) Preset values : 23DH (defroster stop thermost...

14 CONT HI POWER ECONO ON OFF TIMER FAN SPEED ON/OFF MODE TEMP AIR FLOW TIMER CANCEL HI POWER ECONO ON OFF ACL AUTO HI MED LO 1.4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Remote controller Indoor unit indicator FAN SPEED indicator Indicators the ¡ for the fan speed which has been set. ON-TI...

15 CONT ON OFF TIMER FAN SPEED ON/OFF MODE TEMP AIR FLOW SET TIMER TIMER ACL AUTO HI MED LO TEMPERATURE Indicator Indicates set temperature. (Does not indicate temperature whenoperation mode is on AUTO) FAN SPEED Indicator Indicates set air flow rate with • lamp. OPERATION MOOD Indicator OPERATION M...

16 (2) Flap control Control the flap by AIRFLOW button on the wireless remote controller. (a) Natural flow (AUTO) The flap will be automatically set to the angle of air flow best to operation. (i) Starting time of operation (c) Swing flap Flap moves in upward and downward directions continuously. Ho...

18 (c) When switching to automatic operation during “Heating” “Cooling” “Dry” or when restarting with in 30 minutes (40 : 1 hour) after stopping with automatic operation mode, the former operating mode is selected. (In this case, 20 seconds Looperation of indoor fan is not performed). When the previ...

19 (b) Fan speed knob: AUTO The indoor fan is automatically controlled in accordance with the difference between the room temperature (detected by the room temperature thermistor) and the thermostat setting as shown below. Mode Heating Cooling Fan 18~30˚C Thermostat setting point Thermostat setting ...

22 (12) Dew condensation prevention control for cooling operation This prevents dew condensation, in the indoor unit, from occurring. (a) Operating condition: when 52C is kept ON for 30 min. after the unit starts operation. (b) Operation content: forces the indoor fan to change from Speed 1 to Speed...

23 (17) Three-minute forced operation When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the operation mode. (After 3 minutes has passed the thermal operation is effective.) However, stopping the compressor via a stop signal or ...

24 (21) Self diagnosis function When something abnormal happens on the outdoor unit, indoor unit fan motor and each sensor (heat exchanger, room tempera- ture,) it will be indicated by flashing lamps. (a) Abnormality of outdoor unit: S 50, 56 models 1) Cooling operation When the indoor heat exchange...

25 1.5 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 possibility o...

26 1.5.1 Selection of location for installation (1) Indoor unit (a) Where there is no obstructions to the air flow and where the cooled air can be evenly distributed. (b) A solid place where the unit or the wall will not vibrate. (c) A place where there will be enough space for servicing. (Where spa...

27 1.5.2 Installation of indoor unit (1) Installation if installation board (a) Fixing of installation board Lock for the inside wall structures (Intermediate support or pillar)and firmly install the unit after level surface has been checked. Adjustment of the installationboard in the horizontal dir...

28 Use cables for interconnection wiring to avoid loosening of the wires.CENELEC code for cables Required field cables. H05 RNR3G1.5 (Example) H Harmonized cable type 05 300/500 volts R Natural-and/or synth, rubber wire insulation N Polychloroprene rubber conductors insulation R Stranded core 3or5 N...

29 Declining slope [When the pipe is extended to left and taken out from the rear center] Note (1) I t i s d e s i g n e d t o c o l l e c t m o i s t u r e accumulated on the rear face in thedrain pan. Be sure not to accommodatethe power cable, etc. above the chute. ¡ When arranging the pipe throug...

30 Indoor unit side Outdoor unit side ¡ Remove the flared nuts.(on both liquid and gas sides) ¡ Remove the flared nuts.(on both liquid and gas sides) ¡ Install the removed flared nuts to the pipes to be connected,then flare the pipes. Dimension ALiquid side( φ 6.35): 9-9.5 dia Gas side( φ 12.7): 16....

31 Item Model SRK408HENF-L3 Cooling – High pressure MPa(kgf/cm 2 ) Heating 1.76 ~ 1.96 (18 ~ 20) Cooling 0.39 ~0.49 (4.0 ~ 5.0) Low pressure MPa(kgf/cm 2 ) Heating – Cooling 12 ~ 16 Heating 18 ~ 22 Cooling 6.4/6.4 Running current (A) Heating 6.5/6.5 (4) Insulation of connecting portion 1) Cover the ...

33 1.6 MAINTENANCE DATA 1.6.1 Trouble shooting (1) Trouble shooting to be performed prior to exchanging PCB, (Printed circuit board) [Common to all models] All the models described in this chapter are controlled by a microcomputer. When providing maintenance service to customers it is necessary to u...

34 (2) Indication of Self Diagnosis (Indoor unit) (3) Troubleshooting Abnormality of outdoor unit [Compressor malfunction of insufficient gas (refrigerant)] TIMER lampis lightscontinuously. RUN lamp is flashing.(1 Time flash.) RUN lamp is flashing.(2 Time flash.) RUN lamp is flashing.(6 Time flash.)...

35 Is connection to connectorgood? Is thermistor resistancevalue normal? Replace PCB. Repair connector. Replace thermistor. No No Yes Yes Anormality of thermistor Disconnection of thermistor and defective connection of connector Chart for thermistor temperatureresistance characteristics (Disconnecti...

36 (6) How to make sure of remote controller Unit Thermistor Operation Function Short circuit Broken connection Cooling Heating Cooling Heating Cooling Heating Indoor unit Room temperaturethermistor (1) (Th 1 ) except for “continuous”thermal setting. Cooling will not operate ¡ FM I : continuous oper...

37 Liquid side Gas side Check joint Service hose Charge hose Vacuumpump Refrigerantcylinder Gaugemanifold 1.6.2 Servicing (1) Evacuation The evacuation is an procedure to purge impurities ...... noncondensable gas, air, moisture from the refrigerant equipment by using a vacuum pump. Since the refrig...

38 1.6.3 Power supply remote operation When the remote part on indoor unit PCB is modified, the air conditioner is turned ON-OFF by power supply ON-OFF operation without using remote control switch. After the power supply remote operation, the operation contents can be modified by the remote control...