Mitsubishi Electric PVFY-P12 Service Manual

Multi-position air handler

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Operation manual (20 pages)

Installation manual (52 pages)

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Page 1 Series PVA Series PVA Model name Model name Model name Model name <Indoor unit> <Indoor unit> <Indoor unit> <Indoor unit> PVFY-P12, 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...
Page 3: Table Of Contents
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 4: Safety Precaution
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 5 Mitsubishi Electric may result in smoke, fire, or Only use the type of refrigerant that is indicated on the unit explosion.
Page 6 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. © 2017 Mitsubishi Electric US, Inc.
Page 7: Features
FEATURES Cooling capacity/Heating capacity Model Btu/h 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. © 2017 Mitsubishi Electric US, Inc.
Page 8: Part Names And Functions
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. © 2017 Mitsubishi Electric US, Inc.
Page 9 To set the functions that are not available on this controller (PAC-YT53CRAU), use MA remote controller or • the centralized controller. Specifications are subject to change without notice. © 2017 Mitsubishi Electric US, Inc.
Page 10 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. © 2017 Mitsubishi Electric US, Inc.
Page 11: Specification
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. © 2017 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. © 2017 Mitsubishi Electric US, Inc.
Page 13 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. © 2017 Mitsubishi Electric US, Inc.
Page 14 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. © 2017 Mitsubishi Electric US, Inc.
Page 15: Outlines & Dimensions
OUTLINES & DIMENSIONS INDOOR UNIT PVFY-P12,18, 24, 30, 36, 48, 54NAMU-E1 Unit : mm(in.) Specifications are subject to change without notice. © 2017 Mitsubishi Electric US, Inc.
Page 17: Wiring Diagram
WIRING DIAGRAM PVFY-P12,18, 24, 30, 36, 48, 54NAMU-E1 Specifications are subject to change without notice. © 2017 Mitsubishi Electric US, Inc.
Page 18: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PVFY-P12,18, 24, 30, 36, 48, 54NAMU-E1 Gas pipe thermistor TH23 Gas pipe Liquid pipe Brazed connections Strainer (#100 mesh) Linear expansion valve Liquid pipe thermistor TH22 Heat exchanger Room temperature thermistor TH21 Capacity PVFY-P12, 18NAMU-E1 PVFY-P24, 30, 36, 48, 54NAMU-E1 Gas pipe ø12.7 [1/2]...
Page 19: Microprocessor Control
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. © 2017 Mitsubishi Electric US, Inc.
Page 20 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. © 2017 Mitsubishi Electric US, Inc.
Page 21 (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. © 2017 Mitsubishi Electric US, Inc.
Page 22 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. © 2017 Mitsubishi Electric US, Inc.
Page 23 (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. © 2017 Mitsubishi Electric US, Inc.
Page 24 *1 Default settings: SW3-2 OFF, SW3-4 OFF *2 Heater will not operate during all error modes. Heater will only operate during a communication error between indoor unit and outdoor unit. Specifications are subject to change without notice. © 2017 Mitsubishi Electric US, Inc.
Page 25 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. © 2017 Mitsubishi Electric US, Inc.
Page 26 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. © 2017 Mitsubishi Electric US, Inc.
Page 27 (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. © 2017 Mitsubishi Electric US, Inc.
Page 28 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. © 2017 Mitsubishi Electric US, Inc.
Page 29 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. © 2017 Mitsubishi Electric US, Inc.
Page 30 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. © 2017 Mitsubishi Electric US, Inc.
Page 31: Troubleshooting
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. © 2017 Mitsubishi Electric US, Inc.
Page 32 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. © 2017 Mitsubishi Electric US, Inc.
Page 33 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. © 2017 Mitsubishi Electric US, Inc.
Page 34 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. © 2017 Mitsubishi Electric US, Inc.
Page 35 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. © 2017 Mitsubishi Electric US, Inc.
Page 36 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. © 2017 Mitsubishi Electric US, Inc.
Page 37 4. Voltage test points on the control board 1. PVFY-P12, 18, 24, 30, 36, 48, 54NAMU-E1 Fuse (AC 250V 6.3A) Power supply voltage (220 - 240VAC) CN2M For M-NET transmission cable CN2M connection (24 - 30VDC) Emergency operation Capacity setting...
Page 38 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. © 2017 Mitsubishi Electric US, Inc.
Page 39 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. © 2017 Mitsubishi Electric US, Inc.
Page 40 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. © 2017 Mitsubishi Electric US, Inc.
Page 41: Disassembly Procedure
10 DISASSEMBLY PROCEDURE 1. Control box Exercise caution when removing heavy parts. 1. Remove the Electric panel (2 screws). Fig.1 Specifications are subject to change without notice. © 2017 Mitsubishi Electric US, Inc.
Page 42 1:15 CHECKED DESIGNED 4. Pull out the thermistor holder and thermistor inside the box. Fig. 4 MITSUBISHI ELECTRIC C DATE DIM.mm DRAWN SCALE CHECKED DESIGNED Specifications are subject to change without notice. © 2017 Mitsubishi Electric US, Inc.
Page 43 Next, slide the coil from the frame. Fig. 7 Fig. 8 Specifications are subject to change without notice. © 2017 Mitsubishi Electric US, Inc.
Page 44 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. © 2017 Mitsubishi Electric US, Inc.
Page 45 (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. © 2017 Mitsubishi Electric US, Inc.
Page 46 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, January 2017 Specifications are subject to change without notice. © 2017 Mitsubishi Electric US, Inc.

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