MRV S (America) Service Manual SYJS-07-2017 REV.
CONTENTS 1. General Information....................................................................................................................1 1.1 Outdoor models and external appearance............................................................................1 1.2 Feature..................................................................................................................................2 2. Specification....................................................................................
1. General Information 1.
1.2 Feature New platform, new outlook 1. Spiral air outlet grill 2. Built- in stop valve 3. Round corner High efficiency, SEER 16.8, HSPF 10 1. DC inverter compressor 2. DC fan motor and 550mm big fan 3. Larger heat exchanger 4. Ball valve 5. New PCB program Low sound level 1. New aerodynamics fan 2. Enlarged air inlet grill and spiral air outlet grill 3. Night silent mode 5 2 3 4 1 2-2 2-1 3 1 2 High convenience 1. Four handles design 2. “888” test panel 3.
2. Specification OUTDOOR MODEL NUMBER MVHP036MV2AA Rated Capacity Btu/hr 36,000 Capacity Range Btu/hr 7,000-36,000 Rated Power Input W 3,330 Cooling Non-ducted SEER 16.0 EER 10.9 Rated Capacity Btu/hr 36,000 Capacity Range Btu/hr 7,000-36,000 Rated Power Input W 3,330 Cooling Ducted SEER 16.0 EER 10.9 Rated Heating Capacity 47°F Btu/hr 40,000 Heating Capacity Range Btu/hr 8,000-40,000 Rated Power Input W 3,480 HSPF 10.0 Heating Non-ducted Rated Heating Capacity 17°F Btu/hr 25,000 Max.
OUTDOOR MODEL NUMBER MVHP048MV2AA Rated Capacity Btu/hr 48,000 Capacity Range Btu/hr 7,000-48,000 Rated Power Input W 4,800 Cooling Non-ducted SEER 16.0 EER 10.0 Rated Capacity Btu/hr 48,000 Capacity Range Btu/hr 7,000-48,000 Rated Power Input W 4,800 Cooling Ducted SEER 16.0 EER 10.0 Rated Heating Capacity 47°F Btu/hr 54,000 Heating Capacity Range Btu/hr 8,000-54,000 Rated Power Input W 5,250 HSPF 10.0 Heating Non-ducted Rated Heating Capacity 17°F Btu/hr 32,400 Max.
OUTDOOR MODEL NUMBER MVHP056MV2AA Rated Capacity Btu/hr 56,000 Capacity Range Btu/hr 7,000-56,000 Rated Power Input W 5,580 Cooling Non-ducted SEER 16.0 EER 10.0 Rated Capacity Btu/hr 56,000 Capacity Range Btu/hr 7,000-56,000 Rated Power Input W 5,580 Cooling Ducted SEER 16.0 EER 10.0 Rated Heating Capacity 47°F Btu/hr 59,000 Heating Capacity Range Btu/hr 8,000-59,000 Rated Power Input W 6,150 HSPF 10.0 Heating Non-ducted Rated Heating Capacity 17°F Btu/hr 36,400 Max.
3.
Td HPS Liquid pipe stop valve Charging valve Gas pipe stop valve com e d 4WV c SV1 CHi LPS Ts Oil segregator s Gas-liquid segregator Condensor EEV Te Tao 4.
Liquid pipe stop valve Charging valve Gas pipe stop valve Td HPS Pd e Oil segregator s Inverter compressor d 4wv c SV1 Ts 8 Gas-liquid segregator Ps Tc1 Tc2 EEV PMV2 Te Condensor Subcooler Tao MVHP048-56MV2AA
Part name Compressor Pressure switch Sign Function / Capacity control, meet indoor load request by adjusting frequency and opening and closing fixing frequency compressor. Date 20°C HPS High pressure protection 4.15Mpa, OFF EEV In heating, refrigerant flow control 36:Φ2.4 48/56:Φ3.0 Subcooled control Φ2.4 Electronic expansion valve PMV2 Note Solenoid valve SV1 1. Keep balance of high/low pressure when compressor starts up and stops 2.
5. Wiring Diagram MVHP036MV2AA 0150518286 HPS TD TE(1) TS TA Ps Pd ACL CN7 REACTOR 6.
MVHP048/056MV2AA 0150522553 HPS TD TE(1) PS TS TA PD P ACL CN13 CN12 REACTOR 6.
6. Capacity Calculation Due to Capacity Modification Coefficient (1) Calculation method of refrigerating capacity----cooling capacity to be known=refrigerating capacity*(A*B*C*D*E)W A. Capacity compensation value of indoor air wet-bulb temperature condition Capacity modification value Capacity modification value 1.2 1.1 1.0 0.9 0.8 B. Capacity compensation value of outdoor air dry-bulb temperature condition 15 20 24 1.2 1.1 1.0 0.
(2) Calculation method of refrigerating capacity----heating capacity to be known=refrigerating capacity*(A*B*C*D*E*F)W A. Capacity compensation value of indoor air dry-bulb temperature condition B. Capacity compensation value of outdoor air wet-bulb temperature condition 1.2 1.2 1.1 1.1 1.0 0.9 1.0 0.8 0.9 0.7 0.8 0.6 15 20 24 Indoor air dry-bulb temperature (° C) 0.5 -15 1.
7. Cooling Capacity MVHP036MV2AA Capacity Factor (%) 130% 120% 110% Outdoor Temp. 57.2 TC 60.8 PI TC PI Cooling Indoor Temp.(°FWB) 64.4 67.0 68.0 TC PI TC PI TC PI 71.6 TC PI 75.2 TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW 23 32.32 1.15 38.16 1.89 44.16 2.06 47.18 2.27 48.92 2.73 50.72 2.95 52.63 3.30 32 32.32 1.16 38.16 1.90 44.16 2.09 47.18 2.29 48.92 2.75 50.72 3.05 51.85 3.28 41 32.32 1.17 38.16 1.
MVHP036MV2AA Capacity Factor (%) 100% 90% 80% Outdoor Temp. TC 57.2 PI TC 60.8 PI Cooling Indoor Temp.(°FWB) 64.4 67.0 68.0 TC PI TC PI TC PI TC 71.6 PI 75.2 TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW 23 25.14 0.89 29.62 1.35 33.84 1.47 36.00 1.62 38.60 1.95 43.10 2.11 50.31 2.36 32 25.14 0.90 29.62 1.36 33.84 1.49 36.00 1.63 38.60 1.96 43.10 2.18 49.56 2.34 41 25.14 0.90 29.62 1.37 33.84 1.51 36.
MVHP036MV2AA Capacity Factor (%) 70% 60% 50% Outdoor Temp. TC 57.2 PI TC 60.8 PI Cooling Indoor Temp.(°FWB) 64.4 67.0 68.0 TC PI TC PI TC PI TC 71.6 PI 75.2 TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW 23 17.50 0.70 20.64 0.91 23.66 0.99 25.28 1.09 26.94 1.30 30.08 1.42 34.16 1.59 32 17.50 0.71 20.64 0.91 23.66 1.00 25.28 1.10 26.94 1.31 30.08 1.47 33.65 1.57 41 17.50 0.71 20.64 0.92 23.66 1.02 25.28 1.
MVHP048MV2AA Capacity Factor (%) 130% 120% 110% Outdoor Temp. TC 57.2 PI TC 60.8 PI Cooling Indoor Temp.(°FWB) 64.4 67.0 68.0 TC PI TC PI TC PI TC 71.6 PI 75.2 TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW 23 43.09 1.66 50.88 2.73 58.88 2.97 62.91 3.27 65.23 3.93 67.63 4.26 70.18 4.76 32 43.09 1.67 50.88 2.74 58.88 3.01 62.91 3.30 65.23 3.96 67.63 4.40 69.13 4.72 41 43.09 1.68 50.88 2.75 58.88 3.06 62.
MVHP048MV2AA Capacity Factor (%) 100% 90% 80% Outdoor Temp. TC 57.2 PI TC 60.8 PI Cooling Indoor Temp.(°FWB) 64.4 67.0 68.0 TC PI TC PI TC PI TC 71.6 PI 75.2 TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW 23 33.52 1.28 39.49 1.95 45.12 2.12 48.00 2.34 51.47 2.80 57.47 3.04 67.08 3.40 32 33.52 1.30 39.49 1.97 45.12 2.14 48.00 2.36 51.47 2.82 57.47 3.15 66.07 3.38 41 33.52 1.30 39.49 1.97 45.12 2.18 48.
MVHP048MV2AA Capacity Factor (%) 70% 60% 50% Outdoor Temp. TC 57.2 PI TC 60.8 PI Cooling Indoor Temp.(°FWB) 64.4 67.0 68.0 TC PI TC PI TC PI TC 71.6 PI 75.2 TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW 23 23.33 1.01 27.52 1.31 31.55 1.43 33.71 1.57 35.92 1.88 40.11 2.04 45.55 2.29 32 23.33 1.02 27.52 1.32 31.55 1.44 33.71 1.58 35.92 1.89 40.11 2.11 44.87 2.27 41 23.33 1.02 27.52 1.32 31.55 1.47 33.71 1.
MVHP056MV2AA Capacity Factor (%) 130% 120% 110% Outdoor Temp. TC 57.2 PI TC 60.8 PI Cooling Indoor Temp.(°FWB) 64.4 67.0 TC PI TC PI TC 68.0 PI TC 71.6 PI 75.2 TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW 23 50.28 1.93 59.36 3.17 68.69 3.46 73.39 3.81 76.10 4.57 78.90 4.95 81.87 5.53 32 50.28 1.95 59.36 3.19 68.69 3.49 73.39 3.83 76.10 4.60 78.90 5.12 80.65 5.49 41 50.28 1.95 59.36 3.20 68.69 3.
MVHP056MV2AA Capacity Factor (%) 100% 90% 80% Outdoor Temp. TC 57.2 PI TC 60.8 PI Cooling Indoor Temp.(°FWB) 64.4 67.0 TC PI TC PI TC 68.0 PI TC 71.6 PI 75.2 TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW 23 39.11 1.49 46.08 2.27 52.64 2.46 56.00 2.72 60.04 3.26 67.04 3.54 78.26 3.96 32 39.11 1.51 46.08 2.28 52.64 2.49 56.00 2.74 60.04 3.28 67.04 3.66 77.09 3.93 41 39.11 1.51 46.08 2.29 52.64 2.53 56.
MVHP056MV2AA Cooling Indoor Temp.(°FWB) Capacity Factor (%) 70% 60% 50% Outdoor Temp. 57.2 60.8 64.4 67.0 68.0 71.6 75.2 TC PI TC PI TC PI TC PI TC PI TC PI (°FDB) KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW KBtu/h KW TC PI 23 27.22 1.17 32.11 1.52 36.80 1.66 39.32 1.82 41.91 2.18 46.79 2.38 53.14 2.66 32 27.22 1.18 32.11 1.53 36.80 1.68 39.32 1.84 41.91 2.20 46.79 2.46 52.35 2.64 41 27.22 1.19 32.11 1.53 36.80 1.
8. Heating capacity MVHP036MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. °FDB 130% 120% 110% 60.8 TH 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.
MVHP036MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. TH °FDB 100% 90% 80% 60.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.
MVHP036MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. TH °FDB 70% 60% 50% 60.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.
MVHP048MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. TH °FDB 130% 120% 110% 60.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.
MVHP048MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. TH °FDB 100% 90% 80% 60.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.
MVHP048MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. °FDB 70% 60% 50% 60.8 TH 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.
MVHP056MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. TH °FDB 130% 120% 110% 60.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.
MVHP056MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. TH °FDB 100% 90% 80% 60.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.
MVHP056MV2AA Heating Indoor Temp.(°FDB) Capacity Factor (%) Outdoor Temp. TH °FDB 70% 60% 50% 60.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 5.5 9.3 13.1 14.9 16.7 19.4 23.0 26.6 32.0 37.4 41.0 47.0 48.2 51.8 55.4 59.0 66.2 69.8 °FWB KBtu/h 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.3 30.7 36.0 39.4 43.0 46.2 49.6 53.2 56.7 57.6 59.0 5.0 8.6 12.2 14.0 15.6 18.3 21.9 25.
9.
10. Sound Level (1) Testing illustration 1.18m 1.18m 1m 1m 2) Testing condition: a. Unit running in the nominal condition b. Test in the semi-anechoic chamber c. Noise level varies from the actual factors such as room structure, etc.
11. Outdoor Piping Installation 11.1 Safety precautions • This manual should be saved and stored close to this air conditioning equipment. • There are two types of indications, " WARNING" and " CAUTION" The indication preventing from death or heavy injury is lister as " WARNING".Even the indication listed as " CAUTION" may also cause serious accident. Both of them are related to safety, and should be strictly follwed. • After installation and start-up, please give the manual to the user.
• The maintenance cover plate of the indoor or outdoor unit should not be removed when the main circuit power supply on. Shut off power before removing. • Refrigerant leakage can cause breathing problems. In the event of a refrigerant leak, close the main valve, extinguish any flame and contact a local servicer immediately. • Use the proper breaker and surge protector. If not used, an electric shock or fire may cause injury or damage.
11.2 Transportation and Lifting Lifting Over 60 degrees Please do not remove the packaging until the unit is close to the installation location. rope CAUTION 2.3~3.3 ft • Do not place anything on the device • Use two ropes for lifting the outdoor unit Hoisting method Hoist the unit slowly and ensure that it is level. ① Removal of the outer packing is strictly prohibited ② Hoist outdoor unit packaging as shown using two ropes. Do not remove packing tape and packing box.
11.
Note: 1. In snowy areas, install the unit on a bracket or under a snow-proof cover to prevent the accumulation of snow. 2. Do not install the unit at a place where flammable gas exists. 3. Install the unit in a sturdy location. 4. Install the unit in a level location. 5. When being installed in a location with strong winds, set the air outlet of the unit perpendicular to the wind direction. Also secure the unit with the bolts. 6.
(3) Multi-unit installation in front and back (unit: in.(mm)) The top and two side surfaces must be exposed to open space, and barriers on at least one side of the front and back shall be lower than the outdoor unit. • The installation service spaces shown in the illustrations are based on an air intake temperature of 95°F(35°C)(DB) for COOL operation.
If the coating on the fastening area is stripped off, the nuts rust easily. Dimensions (bottom view) (unit of measurement: mm) A leg pitch1 B leg pitch2 C Front grill (air outlet side) D Drain hole E Bottom frame F Knock-out hole (for piping line) When fastening and loosing the nut, operate with double spanners, because only one spanner cannot execute firmly. (5) Refrigerant pipe connection Pipe connection method: • To ensure correct efficiency, the pipe should be as short as possible.
Pipe specification: b a 1. Pipe "a" diameter (between indoor and branch pipe) (depends on indoor pipe) Please refer to the indoor air conditioner manual. a b 2. Pipe "b" diameter (between branch pipes) Total indoor capacity after the branch pipe (x1000Btu/h) Gas pipe (in) Liquid pipe (in) X<38 Ø5/8 Ø3/8 38≤X< 80 Ø3/4 Ø3/8 a a Copper pipe selection: 3.
Long pipe and high drop 1. Allowable pipe length and height difference First branch piping Indoor unit Length of the longest piping L Drop height between indoor units Drop height between indoor and outdoor units Outdoor unit Length of the longest piping after the first branch piping L h≤49ft.(15m) Maximal length and drop height permissible of refrigerant piping Piping length Drop height Permissible value Piping part Total length of piping (actual length) 492ft.
Note: 1. When connecting the pipe to the outdoor unit, please pay attention to the outdoor pipe dimension. 2. When changing the diameter between pipes and between the units, please change on the branch pipe side. 3. Be sure to blow nitrogen when welding. If not, oxides will be produced and cause heavy damage. Take precautions to prevent water and dust from getting into the pipe.
• Weld the pipe while charging with nitrogen or it will cause impurities (including a film of oxidation) to clog the capillary and the expansion valve which may lead to deadly accidents. • Protect the pipe ends from getting water and other impurities into the pipes (from welding, filed or being sealed with adhesive tape). Taping Flat Brazing Adhesive tape • The refrigerant pipe should be clean. The nitrogen should flow at pressure around 29PSI(0.
The unit is charged with R410A refrigerant. The details below should be paid attention to: • To prevent different oils from getting into the pipe, please use the specific tool for R410A, especially for manifold gauge and charging hose. • To prevent the compressor oil from getting into the refrigerant cycle, please use the anti-counter-flow adapter. (8) Check vale operation • Remove the valve cap. • Turn the liquid stop valve and the gas stop valve with hexangular spanner until it stops.
(10) Refrigerant recovery • Start: press Start and Stop keys on the main control board at the same time for 5 seconds. The unit will start automatic recovery mode. The compressor starts, the LD2 and LD3 which are on display board will flashing display C0, runs for around 3 minutes.
When power failure • When there is a power failure while the unit is running, all the operations will stop. • After being powered again, if the re-start up function is enabled, the unit can resume to the last state before losing power; if the re-satrt up function is disabled, the unit needs to be switched on again manually. • When abnormal operation occurs while running because of the storms, radio interference, etc, please turn off the power source.
12. Outdoor Wiring Installation WARNING Inspect • Turn off the main power switch of the indoor and outdoor unit for 1 minute or more before wiring or servicing. • To prevent damaging the wires and electrical components, avoid installing around animals. It may lead to the occurrence of fire. • To prevent damaging the wires, avoid contact with refrigerant pipes, steel edges and electrical components. It may lead to the occurrence of fire.
The outdoor and all indoor units are connected in parallel through 2 non-polar wires. Three wiring options between the wired controller and indoor unit: A. 1 to multiple (group control): one wired controller controls 2~16 indoors, as shown in the above figure, indoor 1~indoor 2: indoor 2 is wired as control master unit, the others are wired control as slave units.
Indoor power source and communication wiring WARNING • Power lines must be copper wire. • All indoor and outdoor units must be grounded properly. The ground wire must not be grounded using a gas pipe, water pipe, lightning rod or telephone wire. If the grounding is correct it may cause electric shock or fire. • Power supply must be installed with an earth leakage circuit breaker, otherwise it may cause electrical shock or fire.
Outdoor unit electrical wiring diagram Ground wire Power cord Communication line Secure the power line and communication line with a wire clip on the terminal block Power lines and communication lines need to be flame retardant and use high temperature resistant insulation Cable sheath Use plastic pipe insulation on the refrigerant pipe Protect the power line and communication line hole with a wire sheath Power line and piping need to be wrapped with flame retardant tape Correct Error When using a sin
13.
PCB: 0151800146J (used for MVHP048MV2AA and MVHP056MV2AA) Star box control board (note: it is useless) BM2 BM1 START Control board for subcooled valve UP STOP DOWN 53
14. Dip Switch Setting PCB 0151800146JF and 0151800146J (1) BM1 introduction BM1 Definition Introduction BM1_1 Indoor searching after startup OFF Begin to search indoor ON Stop searching indoor and lock the quantity BM1_2 Celsius / Fahrenheit area selection OFF Celsius area ON Fahrenheit area BM1_3 Static pressure selection OFF 0.
15. Monitor Tools SW01 SW02 Main function instruction: By setting the rotary switch, the digital tube will display the outdoor and indoor unit parameters (the outdoor current, discharge temp., suction temp., defrosting temp., coil temp. and outdoor ambient temp.; indoor unit coil temp. and valve open angle and so on), the data is inform of decimal integer.
SW01 SW02 0 1 2 3 5 6 7 8 1 9 A B D E F SW01 2 SW02 0-F 3 0-F 4 5 0-F 0-F 6 0-F 7 0-F 8 0-F 9 A B C 0-F 0-F 0-F 0-F Seven segment digital tube display content Td: exhaust gas sensor (unit: Fahrenheit) Ta: ring temperature sensor (unit: Fahrenheit) Ts: suction sensor (unit: Fahrenheit) Te: defrost sensor (unit: Fahrenheit) Pd: High pressure pressure (unit: psi) Ps: Low pressure (unit: psi) Outdoor machine PMV opening (unit: pls, maximum display 999) Valve state First bit: 4WV (0- closed, 1-
Supercooling valve plate module parameter display SW01 D SW02 0 1 2 3 4 5 6 7 8 9 Seven segment digital tube display content Over cooling valve plate failure code (cold plate module sent) Super cooled valve plate program version (1 decimal) Target opening of the expansion valve of the supercooling valve plate(unit: pls, max: 999) The current opening of the expansion valve of the cold valve plate (unit: pls, max: 999) Tc1 temperature of supercooling valve plate (unit: Fahrenheit) Tc2 temperature of superc
16. Outdoor Unit Control 1. Compressor startup control On startup, inverter compressor will keep for 3 min at 45rps (when Ta<43°C) or 3 min at 40rps (when Ta>=43°C). in cooling mode, meet running 3min and Td≥85°C(or max. running time is 5min),quite the startup control; in heating mode, meet running 3min and Ts-Tc≥5°C(or Tc or Ts<-18°C, or max.
3. Defrosting control In order to have the effect heating operation, need defrosting control. 3.
4. Oil return control 4.1 Entering condition: When load rate<20%: after 2 hours The master unit compressor cumulative ■■OR When load rate≥20%: after 4 hours operation time Load rate≤30% ■■& After the outdoor unit startup ■■OR Load rate≤30% ■■& Finish the outdoor startup control~ after 20min ■■OR Finish the defrosting~ after 30min ■■& Note: load rate=∑indoor HP(Thermo ON) / ∑indoor HP*100% 4.
17.
Digital tube Indication indication on wired on master controller unit (hex) 39-1 39-1 39-2 39-2 40 40 43 43 46 46 53 53 54 54 57 57 58 58 59 59 60 60 61 61 Failure code definition Failure description Remarks After compressor is running, compression ratio 8. for Compression ratio continuous 5 minutes stop and alarm.2 minutes and 50 too high protection seconds later, resume automatically, if it occurs 3 times in an hour, confirm the failure.
Digital tube Indication indication on wired on master controller unit (hex) Failure code definition Failure description 62 62 Valve plate module error(sending by Reserved valve plate) 63 63 Valve plate dial setting error No valve plate module dial but the valve plate module is detected.
Digital tube Indication indication on wired on master controller unit (hex) Failure code definition Failure description 114 114 Voltage too low of DC bus Voltage of power source is too low line of transducer 115 115 Voltage too high of DC bus line of transducer 116 116 117 117 118 118 119 119 120 120 121 121 122 122 123 123 Voltage of power source is too high Communication abnormal between transducer and Communication is disconnected control PCB Compressor startup fails for 5 times
18. Troubleshooting [20-23] Temperature sensor failure If sensor terminal is fixed well Reconnect If sensor resistor /characteristic is proper Replace sensor Check if PCB is faulty, if yes, replace it [122] Radiator temp. sensor of transducer abnormal No Check if connection between temp. sensor and inverter board Adjust connection Yes No Measure if temp.
[26-0, 26-1, 26-2] Communication circuit between indoor and outdoor Yes If wiring between P and Q is wrong or broken down Modify the communication wire No No If wire of on outdoor connecting board is normal Modify the port Yes If the wire on indoor PCB is normal No Yes No If indoor and outdoor are electrified at the same time Connect power source Yes No If communication wire is separate from high-voltage wire on layout Change communication wiring type Yes Yes If indoor quantity is correct (c
[28, 29] High/low pressure sensor failure No If sensor terminal is fixed well Reconnect Yes If voltage between red terminal and black terminal is 5V when testing pressure sensor by multimeter No Replace PCB Yes If voltage between white terminal and black terminal is 0.5V~3.
[30] High pressure switch failure No If connection between pressure switch and connecting board is good Re-connect Yes No If the system pressure meets the condition that pressure switch shuts off Replace pressure switch Yes Make pressure switch close, measure if terminal is conductive by multimeter No Yes Yes If the system is clogged Check the piping system No Make pressure switch terminal on connecting board in short circuit, check if failure exists still Yes No Replace pressure switch and me
[33] Outdoor EEPROM failure No If the EEPROM is fixed well Reconnect Yes Replace EEPROM [34] Protection of discharging temp.
[35] 4-way valve reversing failure No If connection between 4-way valve and connecting board is good Re-connect Yes If system meets condition of 4-way valve reversing: Pd-Ps>0.6MPa No Check if SV1 leaks Yes Measure if CN49 voltage on connecting board is 220VAC after 4-way valve reversing condition is met No Replace connecting board Yes No If compressor running current is normal Yes If there is air noise after 4-way valve reverses, and if the temp.
[39-0, 39-1] Low pressure too low and compression ratio too high If actual pressure is in conformance with the measured data by sensor No Replace pressure sensor Yes No Check if stop valve is open fully Open stop valve Yes Yes Check if system is lack of refrigerant Recharge refrigerant No Check if terminal of electronic expansion valve coil is fixed well No Re-connect the terminals Yes Yes Check if piping system is clogged Clear the piping [39-2] Compression ratio too low If actual pressure
[40] High pressure too high failure If characteristic of high pressure sensors are normal No Replace pressure sensor Yes If stop valve opens fully No Open stop valve Yes If in cooling outdoor fan motor runs normally No Check fan motor Yes If in heating indoor fan motor runs normally and if filter is clogged Yes Check indoor No Check if piping system is clogged Yes 72 Clear the piping
[43] Discharging temp.
[53] CT Current too low or current sensor failure Check if where between connecting board and CT board is connected well (CN9) No Re-connect Yes No Check if CT wire is conductive Replace wire Yes No Check if it is normal after replacing CT board Yes CT board is broken down 74 Replace connecting board
[64] CT current too high Check if wire between connecting board and module is connected normally No Re-connect Yes No Check if CT wire is conductive Replace wire Yes If temperature on top of fixed frequency compressor is too high No If AC contactor work Yes If normal after replacing CT detector No Yes Replace PCB If there is air into the system Yes Recharge refrigerant No If there is clogged, motor is bad Yes No Replace compressor 75 Fix the system
[71-0,71-1 ] DC motor blocked Rotate fan motor by hand to check if there is obviously fiction Yes Replace fan motor No Check the motor and PCB connection is well No Re-connect Yes Forced the fan in low speed, measure if it has alternating voltage between FG and GND No Yes Replace the outdoor PCB 76 Replace the motor
[75-0, 75-4] Pressure difference between high pressure and low pressure is abnormal Check if high/ low pressure sensor is connected well No Re-connect No Correct compressor wire No Correct compressor wire Yes Check if compressor wire is connected normally Yes If wire of inverter compressor are connected oppositely No Yes If 4-way valve is interconnected Replace 4-way valve No Measure if there is voltage U, V, W of compressor by multimeter, and if it is normal No Yes Replace inverter compresso
[82] Compressor current protection [108] Transient over current in IPM module rectifier side software [110] IPM module hardware over current [123] Transient over current in IPM module rectifier side hardware Check if voltage of power supply in normal No Improver power supply circuit No Correct the wiring due to diagram No Replace compressor Yes Check if wire of electric box is correct and if compressor wire is fixed well Yes If compressor is normal (compressor coil resistor insulation) Yes No If po
[111] Compressor out of control [118] the compressor start failure No Check if voltage of power supply is normal Improve power supply circuit Yes No Check the wires among U, V, W of compressor are normal Replace the wires Yes If compressor is normal (compressor coil resistor, insulation) No Replace the compressor Yes Compressor load too much, check the reason [112] Radiator temp. of transducer too high; [81] IPM module temp.
[113] Protection of overload No Check if voltage of power supply is normal Improve power supply circuit Yes No Check if wire of electric box is correct Correct the wiring due to diagram Yes No If compressor is normal (compressor coil resistor, insulation) Replace compressor Yes No If power module is normal Replace power module Yes Compress load too much, check the reason [114] Voltage too low of DC bus line of transducer Check if voltage of power supply is normal No Improve power supply circ
[115] Voltage too high of DC bus line of transducer No Check if voltage of power supply is normal Improve power supply circuit Yes No Check if wire of electric box is correct Correct the wiring due to diagram Yes Measure if DC bus line voltage between P and N of module is over 644V No Circuit of DC bus line voltage on inverter control board abnormal, replace inverter control board Yes Check rectifier, reactor, electrolytic capacitor in inverter main circuit [116] Communication abnormal between tra
[117] Transducer over current (software protection) No Check voltage of power supply is normal Improve power supply circuit Yes No Check if wire of electric box is correct Correct the wiring due to diagram Yes If compressor is normal (compressor coil resistor, insulation) No Replace compressor Yes No If power module is normal Replace power module Yes Compressor load too much, check the reason [119] Current detection circuit of transducer is abnormal Check if wire between DCCT and control board
[120] Power supply of transducer abnormal No Check if voltage of power supply is normal Improve power supply circuit Yes No Check if wire of electric box is correct Correct the wiring due to diagram Yes No If relay or AC contactor acts well Adjust or replace relay or AC contactor Yes Measure if DC bus line voltage between P and N on module is less than 140V No DC bus line voltage circuit on inverter board broken down, replace inverter module board Yes Check rectifier, reactor, electrolytic capa
[122] Radiator temp. sensor of transducer abnormal Check if connection between temp. sensor and inverter board No Adjust connection Yes Measure if temp.
Appendix I: Sensor Resistance Table Code Resistance Description 0010450192 10K Outdoor ambient temp. sensor 0010450194 10K Defrosting temp. sensor 0010451303 50K Discharging temp. sensor 0010451307 10K Suction temp.
R80=50kΩ±3% B25/80=4450K±3% Temp Resistance (kΩ) % (Resist. Tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 0 1749.014 1921.993 2094.972 9 9 1 1651.431 1813.265 1975.099 8.93 8.93 2 1560.165 1711.646 1863.127 8.85 8.85 3 1474.737 1616.593 1758.449 8.78 8.78 4 1394.709 1527.611 1660.513 8.7 8.7 5 1319.683 1444.25 1568.817 8.63 8.63 6 1249.295 1366.096 1482.897 8.55 8.55 7 1183.21 1292.773 1402.336 8.48 8.48 8 1121.124 1223.935 1326.746 8.4 8.
R80=50kΩ±3% B25/80=4450K±3% Temp Resistance (kΩ) % (Resist. Tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 37 272.329 290.407 308.485 6.23 6.23 38 260.427 277.493 294.559 6.15 6.15 39 249.104 265.216 281.328 6.08 6.08 40 238.329 253.541 268.753 6 6 41 228.073 242.437 256.801 5.93 5.93 42 218.308 231.873 245.438 5.85 5.85 43 209.01 221.82 234.63 5.78 5.78 44 200.154 212.252 224.35 5.7 5.7 45 191.715 203.142 214.569 5.63 5.63 46 183.674 194.
R80=50kΩ±3% B25/80=4450K±3% Temp Resistance (kΩ) % (Resist. Tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 72 64.988 67.415 69.842 3.6 3.6 73 62.613 64.901 67.189 3.53 3.53 74 60.337 62.493 64.649 3.45 3.45 75 58.154 60.185 62.216 3.38 3.38 76 56.06 57.973 59.886 3.3 3.3 77 54.051 55.852 57.653 3.23 3.23 78 52.125 53.82 55.515 3.15 3.15 79 50.275 51.87 53.465 3.08 3.08 80 48.5 50 51.5 3 3 81 46.728 48.206 49.684 3.07 3.07 82 45.028 46.
R80=50kΩ±3% B25/80=4450K±3% Temp Resistance (kΩ) % (Resist. Tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 105 20.067 21.049 22.031 4.67 4.67 106 19.408 20.372 21.336 4.73 4.73 107 18.773 19.72 20.667 4.8 4.8 108 18.162 19.091 20.02 4.87 4.87 109 17.573 18.485 19.397 4.93 4.93 110 17.005 17.9 18.795 5 5 111 16.459 17.337 18.215 5.07 5.07 112 15.931 16.793 17.655 5.13 5.13 113 15.422 16.268 17.114 5.2 5.2 114 14.933 15.763 16.593 5.27 5.
R25=10kΩ±3% B25/50=3700K±3% Temp Resistance (kΩ) % (Resist. Tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) -30 145.819 135.018 124.217 7 7 -29 138.071 129.126 120.181 6.93 6.93 -28 131.793 123.339 114.885 6.85 6.85 -27 125.665 117.684 109.703 6.78 6.78 -26 119.706 112.18 104.654 6.71 6.71 -25 113.933 106.843 99.753 6.64 6.64 -24 108.361 101.687 95.013 6.56 6.56 -23 102.997 96.719 90.441 6.49 6.49 -22 97.847 91.946 86.045 6.42 6.42 -21 92.
R25=10kΩ±3% B25/50=3700K±3% Temp Resistance (kΩ) % (Resist. Tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 5 24.742 23.687 22.632 4.45 4.45 6 23.61 22.619 21.628 4.38 4.38 7 22.538 21.607 20.676 4.31 4.31 8 21.522 20.647 19.772 4.24 4.24 9 20.559 19.737 18.915 4.16 4.16 10 19.646 18.874 18.102 4.09 4.09 11 18.779 18.054 17.329 4.02 4.02 12 17.958 17.276 16.594 3.95 3.95 13 17.177 16.537 15.897 3.87 3.87 14 16.436 15.834 15.232 3.8 3.
R25=10kΩ±3% B25/50=3700K±3% Temp Resistance (kΩ) % (Resist. Tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 42 5.36 5.151 4.942 4.06 4.06 43 5.166 4.961 4.756 4.13 4.13 44 4.978 4.778 4.578 4.19 4.19 45 4.799 4.603 4.407 4.25 4.25 46 4.625 4.434 4.243 4.31 4.31 47 4.46 4.273 4.086 4.38 4.38 48 4.301 4.118 3.935 4.44 4.44 49 4.148 3.969 3.79 4.5 4.5 50 4.001 3.826 3.651 4.56 4.56 51 3.86 3.689 3.518 4.63 4.63 52 3.724 3.557 3.39 4.
R25=10kΩ±3% B25/50=3700K±3% Temp Resistance (kΩ) % (Resist. Tol) (°C) Rmax R (t) Normal Rmin MAX (+) MIN (-) 76 1.676 1.578 1.48 6.19 6.19 77 1.626 1.53 1.434 6.25 6.25 78 1.578 1.484 1.39 6.31 6.31 79 1.531 1.439 1.347 6.38 6.38 80 1.486 1.396 1.306 6.44 6.44 81 1.443 1.355 1.267 6.5 6.5 82 1.401 1.315 1.229 6.56 6.56 83 1.362 1.277 1.192 6.63 6.63 84 1.323 1.24 1.157 6.69 6.69 85 1.285 1.204 1.123 6.75 6.75 86 1.249 1.169 1.089 6.
Appendix II: Enthalpy-Humidity Chart 0 102xPa 5 10 15 5 0mmHg 0 20 10 25 15 5 30 20 10 35 25 Humidity d. 15 20 40 45 30 25 50 55 35 30 g/kg dry air 60 40 45 35 40 60 55 55 50 50 45 45 40 40 40 0 30 1 焓 -15 31 29 28 27 00 50 00 40 00 -1 0 -1 0 -3 -2 -2 -7 -6 -5 -4 -30 Wet ait enthalpy-humidity chart 1013.25mbar (10Pa) Atmosphetic ptessute 760mmHg 2000 1000 i d 0 =1.24t+0.001d(597.3+0.44t)kcal/kg dtyait 500 10 0 -50 00 -10 00 -15 00 -25 =1.
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