Related Manuals for Mitsubishi Mr.SLIM PEAD Series
Summary of Contents for Mitsubishi Mr.SLIM PEAD Series
- Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS 2014 SERVICE MANUAL Series PEAD Model name Model name <Indoor unit> <Indoor unit> PEAD-A24AA5 PEAD-A30AA5 PEAD-A36AA5 PEAD-A42AA5 INDOOR UNIT...
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Page 3: Table Of Contents
ONTENTS . SAFETY PRECAUTION 2. PART NAMES AND FUNCTIONS 3. SPECIFICATION 4. FAN PERFORMANCE AND CORRECTED AIR FLOW 5. SOUND PRESSURE LEVELS 6. OUTLINES & DIMENSIONS 7. WIRING DIAGRAM 8. REFRIGERANT SYSTEM DIAGRAM 9. HEATER CONTROL 0. TROUBLESHOOTING . DISASSEMBLY PROCEDUR E... -
Page 4: Safety Precaution
SAFETY PRECAUTION 1-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. 1-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilising refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. In case of using the existing pipes for R22, be careful with If other refrigerant (R22 etc.) is used, chlorine in refrige- the followings. -
Page 5: Part Names And Functions
Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. Tool name Specifications Gauge manifold Only for R410A · Use the existing fitting specifications. (UNF1/2) · Use high-tension side pressure of 5.3MPa·G or over. ·... -
Page 6: Specification
SPECIFICATION Service Ref. PEAD-A24AA5 Power supply (phase, cycle, voltage) 1 phase, 60Hz, 208/230V Max. Fuse Size Min. Circuit Ampacity 2.63 External finish Galvanized sheets Heat exchanger Plate fin coil Fan (drive) × No. Sirocco fan × 2 an motor output 0.121 F.L.A 2.10... - Page 7 Service Ref. PEAD-A42AA5 Power supply (phase, cycle, voltage) 1 phase, 60Hz, 208/230V Max. Fuse Size Min. Circuit Ampacity 3.50 External finish Galvanized sheets Heat exchanger Plate fin coil Fan (drive) × No. Sirocco fan × 2 an motor output 0.244 F.L.A 2.80 Fan motor...
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Page 8: Fan Performance And Corrected Air Flow
FAN PERFORMANCE AND CORRECTED AIR FLOW PEAD-A24AA5 PEAD-A24AA5 (External static pressure 35Pa) 208-230V 60Hz (External static pressure 100Pa) 208-230V 60Hz [0.241] [0.602] [0.201] Limit Limit Rated point [0.161] [0.401] Rated point High [0.120] High Middle [0.080] Middle [0.201] [0.040] [353] [530] [706] [883]... - Page 9 PEAD-A30AA5 PEAD-A30AA5 (External static pressure 35Pa) 208-230V 60Hz (External static pressure 100Pa) 208-230V 60Hz [0.281] [0.602] [0.241] Limit High Limit Rated point [0.201] High [0.401] [0.161] Rated point Middle Middle [0.120] [0.201] [0.080] [0.040] [353] [530] [706] [883] [1059] [353] [530] [706] [883]...
- Page 10 PEAD-A36AA5 PEAD-A36AA5 (External static pressure 35Pa) 208-230V 60Hz (External static pressure 100Pa) 208-230V 60Hz [0.281] [0.602] Limit Limit [0.241] High [0.201] Rated point [0.401] Middle [0.161] Rated point [0.120] High Middle [0.201] [0.080] [0.040] [353] [530] [706] [883] [1059] [1236] [1412] [1589] [353]...
- Page 11 PEAD-A42AA5 PEAD-A42AA5 (External static pressure 35Pa) 208-230V 60Hz (External static pressure 100Pa) 208-230V 60Hz [0.281] [0.803] Limit Limit High [0.241] Middle High [0.602] [0.201] [0.161] Middle Rated point Rated point [0.401] [0.120] [0.080] [0.201] [0.040] [530] [706] [883] [1059] [1236] [1412] [1589] [530]...
- Page 12 PEAD-A24, 30, 36,42AA5 Air filter 208-230V 60Hz [0.060] A36,42 [0.040] A24,30 [0.020] [353] [706] [1059] [1412] Airflow rate (m /min)[cfm]...
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Page 13: Sound Pressure Levels
SOUND PRESSURE LEVELS 5-1. Sound pressure level Ceiling concealed Aux. duct test unit Measurement location 5-2. NC curves PEAD-A24AA5 External static pressure 0.14 [in.WG] (35Pa) External static pressure 0.40 [in.WG] (100Pa) 70.0 70.0 High High Middle Middle 65.0 65.0 60.0 60.0 NC-60 NC-60... - Page 14 PEAD-A30AA5 External static pressure 0.14 [in.WG] (35Pa) External static pressure 0.40 [in.WG] (100Pa) 70.0 70.0 High High Middle Middle 65.0 65.0 60.0 60.0 NC-60 NC-60 55.0 55.0 50.0 50.0 NC-50 NC-50 45.0 45.0 40.0 40.0 NC-40 NC-40 35.0 35.0 30.0 30.0 NC-30 NC-30...
- Page 15 PEAD-A36AA5 External static pressure 0.14 [in.WG] (35Pa) External static pressure 0.40 [in.WG] (100Pa) 70.0 70.0 High High Middle Middle 65.0 65.0 60.0 60.0 NC-60 NC-60 55.0 55.0 50.0 50.0 NC-50 NC-50 45.0 45.0 40.0 40.0 NC-40 NC-40 35.0 35.0 30.0 30.0 NC-30 NC-30...
- Page 16 PEAD-A42AA5 External static pressure 0.14 [in.WG] (35Pa) External static pressure 0.40 [in.WG] (100Pa) 70.0 70.0 High High Middle Middle 65.0 65.0 60.0 60.0 NC-60 NC-60 55.0 55.0 50.0 50.0 NC-50 NC-50 45.0 45.0 40.0 40.0 NC-40 NC-40 35.0 35.0 30.0 30.0 NC-30 NC-30...
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Page 17: Outlines & Dimensions
OUTLINES & DIMENSIONS INDOOR UNIT PEAD-A24, 30, 36, 42AA5... -
Page 19: Wiring Diagram
WIRING DIAGRAM PEAD-A24, 30, 36, 42AA5 TRANSMISSION WIRES INSIDE SECTION OF CONTROL BOX TB15 DC12V R.B. I.B. TO OUTDOOR CN32 UNIT (RED) (BLUE) P.B. CN105 CN3C (RED) CN41 LED2 (BLACK) CN2A CN90 (RED) CN25 ZNR02 CNER (BLUE) CN22 ZNR01 LED3 CN51 (GREEN) (BLUE) -
Page 20: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PEAD-A24, 30, 36, 42AA5 Strainer (#50) Heat exchanger Refrigerant GAS pipe connection (Flare) Thermistor TH5 (Cond./ Eva.temperature) Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection (Flare) Thermistor TH2 Pipe temperature(Liquid) Thermistor TH1 (Room temperature) Strainer (#50) Distributor with strainer (#50) -
Page 21: Heater Control
HEATER CONTROL 9-1. CONTROL SPECIFICATIONS AND FUNCTION SETTING Table 1 shows how the field-installed heater is controlled. Select the desired pattern in the table below, and set the Function on the indoor units as shown in Table 1. Table.1 [Function table] Select unit numbers 01 to 03 or all units (AL [wired remote controller] / 07 [IR wireless remote controller]) Setting ode No. - Page 22 9-2. FAN CONTROL By setting the Mode No. 23 in the Function Table in section 9-1 to 2 and using CN4Y on the optional parts PAC-YU25HT, the following patterns of fan control will become possible when [DEFROST] or [ERROR] is displayed. Fan control patterns when [DEFROST] or [ERROR] is displayed Heater is installed in the duct.
- Page 23 (3) Locally procured wiring A basic connection method is shown below. Indoor unit Remote control board Relay circuit control board Adapter CN24 White CN4Y White Electric Heater or panel heater (applicable only when a panel heater is connected) Preparations in the field Maximum cable length is 10 m (32ft) For relay X use the specifications given below Operation coil...
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Page 24: Troubleshooting
TROUBLESHOOTING 10-1. CAUTIONS ON TROUBLESHOOTING (1) Before troubleshooting, check the followings: 1 Check the power supply voltage. 2 Check the indoor/outdoor connecting wire for mis-wiring. (2) Take care the followings during servicing. 1 Before servicing the air conditioner, be sure to turn off the remote controller first to stop the main unit, and then turn off the breaker. - Page 25 10-2. SELF-CHECK FUNCTION • Refer to the installation manual that comes with each remote controller for details. • RF thermostat is not established. [Output pattern A] Errors detected by indoor unit Wired remote controller IR wireless remote controller RF thermostat Symptom Remark Beeper sounds/OPERATION...
- Page 26 For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table. LED 1 (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is always lit. LED 2 (power for remote controller) Indicates whether power is supplied to the remote controller.
- Page 27 Note: Refer to the manual of outdoor unit for the details of display 10-3. SELF-DIAGNOSIS ACTION TABLE such as F, U, and other E. Abnormal point and detection method Countermeasure Error Code Cause Room temperature 1 Defective thermistor 1–3 Check resistance value of thermistor. thermistor (TH1) characteristics 0:[32˚F]..15.0k"...
- Page 28 Abnormal point and detection method Countermeasure Error Code Cause Freezing/overheating protection is (Cooling or drying mode) (Cooling or drying mode) working 1 Clogged filter (reduced airflow) 1 Check clogging of the filter. 1 Freezing protection (Cooling mode) 2 Short cycle of air path 2 Remove shields.
- Page 29 Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor Abnormality of pipe temperature ther- 1–3 Check resistance value of thermistor. mistor / Condenser-Evaporator (TH5) For characteristics, refer to (P1) above. characteristics 2 Check contact failure of connector (CN44) 1 The unit is in three-minute resume pro- 2 Contact failure of connector on the indoor controller board.
- Page 30 Abnormal point and detection method Countermeasure Error Code Cause ∗ Check LED display on the outdoor control cir- Indoor/outdoor unit communication 1 Contact failure, short circuit or, error (Signal receiving error) cuit board. (Connect A-control service tool, mis-wiring (converse wiring) of 1 Abnormal if indoor controller board PAC-SK52ST.) indoor/outdoor unit connecting...
- Page 31 10-4. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure (1)LED2 on indoor controller board • When LED1 on indoor controller board is also off. 1 Power supply of rated voltage is not supplied to out- 1 Check the voltage of outdoor power is off.
- Page 32 10-5. TEST POINT DIAGRAM 10-5-1. Power supply board PEAD-A24AA5 PEAD-A30AA5 PEAD-A36AA5 PEAD-A42AA5 Power supply voltage (208 - 230VAC) CNMF Fan motor output 1 - 4: 310 - 340 VDC 5 - 4: 15 VDC 6 - 4: 0 - 6.5 VDC 7 - 4: Stop 0 or 15 VDC Run 7.5 VDC (0 - 15 pulse)
- Page 33 10-5-2. Indoor controller board PEAD-A24AA5 PEAD-A30AA5 PEAD-A36AA5 PEAD-A42AA5 CN105 CN22 Emergency operation Model selection CNXA2 Capacity setting CN105 Radio frequency interface CNXC2 CN32 Remote start/stop adapter CNXB2 CN22 For MA remote controller cable con- CN41 nection (10 - 13 VDC (Between 1 and 3.)) CN51 CN51 Centralized control CN32...
- Page 34 10-6. TROUBLE CRITERION OF MAIN PARTS PEAD-A24AA5 PEAD-A30AA5 PEAD-A36AA5 PEAD-A42AA5 Part name Check method and criterion Room temperature Measure the resistance with a tester. thermistor (Part temperature 10°C (50°F) ~ 30°C (86°F)) (TH1) Normal Abnormal Pipe temperature 4.3kΩ~9.6kΩ Opened or short-circuited thermistor/liquid (TH2) Condenser/evaporator...
- Page 35 10-8. DC FAN MOTOR (FAN MOTOR/INDOOR CONTROLLER BOARD) Check method of DC fan motor (fan motor/indoor controller circuit board) Notes · High voltage is applied to the connecter (CNMF) for the fan motor. Give attention to the service. · Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller circuit board and fan motor.) Self check...
- Page 36 10-9. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE Each function is controlled by the dip switch and the jumper wire on control p.c. board. SW1 and SW2 are equipped only for service parts. Model setting and capacity setting are memorized in the nonvolatile memory of the control p.c. board of the unit.
- Page 37 DISASSEMBLY PROCEDURE Exercise caution when removing heavy parts. PEAD-A24AA5 PEAD-A30AA5 PEAD-A36AA5 PEAD-A42AA5 1. Control box 1. Removing the control box cover (1) Remove the two fixing screws on the cover (A) to remove it. • Tighten screws to a torque of 2.0±0.2 N ·...
- Page 38 Exercise caution when removing heavy parts. 3. Drainpan 1. Removing the filter and the bottom plate (1) Push up the tab on the filter, and pull out the filter in the direction of the arrow 1. (2) Remove the fixing screws on the bottom plate (D), (E) to remove it.
- Page 39 Exercise caution when removing heavy parts. 4. Thermistor (Condenser/evaporator) (Liquid pipe) 1. Remove the drain pan according to the proce- dure in section 3. 2. Removing the Heat exchanger cover (1) Remove the four fixing screws on the heat exchanger cover (F) to remove it. •...
- Page 40 Exercise caution when removing heavy parts. 5. Fan and fan motor 1. Removing the filter and the bottom plate (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow 1. (2) Remove the fixing screws on the bottom plate (J) to remove it.
- Page 41 Exercise caution when removing heavy parts. 6. Heat exchanger 1. Remove the drain pan according to the proce- dure in section 3. 2. Remove the heat exchanger cover according to the procedure in section 4.2. 3. Removing the cover (1) Remove the five fixing screws on the cover (K) to remove it.
- Page 44 http://Global.MitsubishiElectric.com New publication effective Sep. 2014 Specifications subject to change without notice HWE14030...