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Mitsubishi Electric CITY MULTI PVFY-P12-NAMU-E1 Service Manual
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Mitsubishi Electric CITY MULTI PVFY-P12-NAMU-E1 Service Manual

Mitsubishi Electric CITY MULTI PVFY-P12-NAMU-E1 Service Manual

Multi-position air handler
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Air-Conditioners
SERVICE MANUAL
SERVICE MANUAL
Series PVA
Series PVA
Model name
Model name
Model name
Model name
<Indoor unit>
<Indoor unit>
<Indoor unit>
<Indoor unit>
PVFY-P08, 12, 18, 24, 30, 36, 48, 54NAMU-E1
PVA-A30AA4
PVA-A30AA4
PVA-A36AA4
PVA-A36AA4
Multi-Position Air Handler
PVA-A42AA4
PVA-A42AA4
INDOOR UNIT
INDOOR UNIT
2015
2015

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Summary of Contents for Mitsubishi Electric CITY MULTI PVFY-P12-NAMU-E1

  • Page 1 2015 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS 2015 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS Air-Conditioners SERVICE MANUAL SERVICE MANUAL Series PVA Series PVA Model name Model name Model name Model name <Indoor unit> <Indoor unit> <Indoor unit> <Indoor unit> PVFY-P08, 12, 18, 24, 30, 36, 48, 54NAMU-E1 PVA-A30AA4 PVA-A30AA4 PVA-A36AA4...
  • Page 2 Contents SAFETY PRECAUTION ..............................2 FEATURES ..................................5 PART NAMES AND FUNCTIONS ..........................6 SPECIFICATION ................................9 OUTLINES & DIMENSIONS ............................13 WIRING DIAGRAM ............................... 15 REFRIGERANT SYSTEM DIAGRAM ......................... 16 MICROPROCESSOR CONTROL ..........................17 TROUBLESHOOTING ..............................29 10 DISASSEMBLY PROCEDURE ............................ 39...
  • Page 3 It may also be in violation of applicable laws. Only use accessories (i.e., air cleaners, humidifiers, electric MITSUBISHI ELECTRIC CORPORATION cannot be held heaters) recommended by Mitsubishi Electric. responsible for malfunctions or accidents resulting from the use of the wrong type of refrigerant.
  • Page 4 Mitsubishi Electric may result in smoke, fire, or Only use the type of refrigerant that is indicated on the unit explosion.
  • Page 5 Infiltration of dust, dirt, or water into the refrigerant system composition of the remaining refrigerant in the cylinder will may cause the refrigerator oil to deteriorate. change and become unsuitable for use. iii iii HWE1405A Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 6 Cooling capacity/Heating capacity Model Btu/h PVFY-P08NAMU-E1 8000/9000 2.3/2.6 PVFY-P12NAMU-E1 12000/13500 3.5/4.0 PVFY-P18NAMU-E1 18000/20000 5.3/5.9 PVFY-P24NAMU-E1 24000/27000 7.0/7.9 PVFY-P30NAMU-E1 30000/34000 8.8/10.0 PVFY-P36NAMU-E1 36000/40000 10.6/11.7 PVFY-P48NAMU-E1 48000/54000 14.1/15.8 PVFY-P54NAMU-E1 54000/60000 15.8/17.6 Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 7 PART NAMES AND FUNCTIONS 1. Indoor Unit (1)Vertical (2)Horizontal Right inlet outlet (3)Horizontal left (4)Down flow Air inlet inlet outlet Air outlet Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 8 To set the functions that are not available on this controller (PAC-YT53CRAU), use ME remote controller or • the maintenance tool software. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 9 SETBACK modes Cooling preset temperature Set to Set to Room Room Preset Heating preset temperature temperature AUTO COOL HEATFAN AUTO COOLHEATFAN DRYING VENTI. SETBACK DRYING VENTI. SETBACK Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 10 Remark Installation the Installation Manual. Due to continuing improvement, above specifications may be subject to change without notice. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 11 Remark Installation the Installation Manual. Due to continuing improvement, above specifications may be subject to change without notice. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 12 Remark Installation the Installation Manual. Due to continuing improvement, above specifications may be subject to change without notice. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 13 12VDC Stepping motor drive port diameter ø3.2 (0~2000 pulse) Power supply terminal (L1, L2, G) 250V 20A block Transmission terminal (1, 2) 250V 15A, (M1, M2, S) 250V 20A block TB15 Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 14 OUTLINES & DIMENSIONS INDOOR UNIT PVFY-P08, 12,18, 24, 30, 36, 48, 54NAMU-E1 Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 15 Unit : mm(in.) Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 16 WIRING DIAGRAM PVFY-P08, 12, 18, 24, 30, 36, 48, 54NAMU-E1 Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 17 Heat exchanger Room temperature thermistor TH21 Capacity PVFY-P08, 12, 18NAMU-E1 PVFY-P24, 30, 36, 48, 54NAMU-E1 Gas pipe ø12.7 [1/2] ø15.88 [5/8] Liquid pipe ø6.35 [1/4] ø9.52 [3/8] Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 18 3 speeds + Auto type [Low], [Med], [High], [Auto] When [Auto] is set, fan speed is changed depending on the value of: • Room temperature - Desired temperature Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 19 2) Fan (1) Indoor fan operation controlled depends on the compressor conditions. Dry thermo Fan speed notch [Low] Room temp. ≥ 64°F Stop Room temp. < 64°F [Low] Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 20 (1) Set by remote controller. Type Fan speed notch 3 speeds + Auto type [Low], [Med], [High], [Auto] When [Auto] is set, fan speed becomes [Low]. • Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 21 C: 2 minutes have passed since the condition A. (Terminating the hot adjust mode) *1 The fan may stop, depending on the operation status of the indoor units or on the unit settings. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 22 (1) Same control as cool operation 4) HEAT mode (1) Same control as heat operation The value "3°F" is modifiable from 1.8°F to 9°F by maintenance tool. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 23 *1 Default settings: SW3-2 OFF, SW3-4 OFF *2 Heater will not operate during all error modes. Heater will not work during error if the fan is set to stop in thermo off. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 24 MA controller. Then the non-MA controller can be attached and used. *2 The default time delay setting is 20 minutes. * 3 Time delays are approximate. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 25 X min X min X min ① ① EH1 OFF (To -T ) < 0.9 °F [0.5°C] ⑥ ④ EH2 OFF ⑤ X min X min ⑤ Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 26 (3) This is applicable only to the R410 series. Make the settings for the following dip switches on the outdoor unit control board before switching on the power. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 27 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) Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 28 Keep the length of the cable connecting to the circuit board of the indoor unit shorter than 10 meters (32ft). • Longer than 10 meters (32ft) could cause improper operation. • Use a transit relay when extending wiring such as remote wiring. • Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 29 Indoor unit power board CNEC2 Very low Middle High On-site preparation XF1,2,3,4 power source: DC30V, 1A or less, Maximum cable length is 10m(32ft) AC230V, 1A or less Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 30 Refer to the next page for details. Normal Abnormal CN60 White-Red Yellow-Red Orange-Red Blue-Red Open or short (150) 10% (A) Red (C) Blue (D) Orange (E)Yellow (F)White Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 31 When the valve position remains the same, all output signals will be OFF. • If any output signal is missing or if the signal remains ON, the motor vibrates and makes clicking noise. • Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 32 Measure the resistance between the coils with a tester (red-white, Replace the LEV. shorted LEV motor red-orange, Red-yellow, Red-blue). The normal range of resistance is coils 150kΩ±10%. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 33 Perform a visual check for disconnected connectors. Disconnect the connectors or Perform a visual check of lead wire color. connectors on the contact failure control board and perform a continuity test. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 34 6 - pin 4 150kΩ 143kΩ pin 7 - pin 4 O.L. O.L. *To measure the resistance, connect the negative (-) end of the tester to pin 3. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 35 To set the address to "3," set SW12 to "0" and SW11 to "3." To set the address to "25," set SW 12 to "2" and SW 11 to "5." Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 36 Voltage between the C53 pins 0VDC (with the fan stopped) 1 - 6.5VDC (with the fan in operation) (Same with the voltage between 6 (+) and 4 (-) of CNMF) Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 37 Heater OFF during defrost and error control Heating Disabled Enabled 4-deg up Indoor control board Dipswitch settings must be made while the unit is stopped. Factory setting Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 38 Set SW5 to 240V side when the power supply is 230 volts. 220V (208V) When the power supply is 208 volts, set SW5 to 220V side. 240V (230V) Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 39 1) Indoor control board Factory setting Note: Changes to the dipswitches SW11, SW12, SW14, and SW15 must be made while the unit is stopped and the remote controller is OFF. Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 40 1:15 CHECKED DESIGNED 4. Pull out the thermistor holder and thermistor inside the box. Fig. 4 MITSUBISHI ELECTRIC C DATE DIM.mm Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc. DRAWN SCALE CHECKED...
  • Page 41 Next, slide the coil from the frame. Fig. 7 Fig. 8 Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 42 5. Remove the plate covering the coil assembly to access the thermistors. Fig. 9 6. Remove lower and side drain pan. Fig. 10 Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 43 (Fig.12). Unplug the motor and route the wire harness out of the enclosure. 4. Remove the (2) screws that secure the fan assembly and slide out. Fig. 12 Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.
  • Page 44 Please be sure to put the contact address/telephone number on this manual before handing it to the customer. MITSUBISHI ELECTRIC US, INC. www.mitsubishielectric-usa.com Toll Free: 800-433-4822 MEUS DOC# MD-1404-K007, Ver.2 February 2022 Specifications are subject to change without notice. © 2022 Mitsubishi Electric US, Inc.

This manual is also suitable for:

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