MAXA BDS28A Especificaciones

TECHNICAL MANUAL 2013 SPLIT MONO DC INVERTER MODELS BDS28A BDS35A This manual has been created for in

10 6. PRINTED CIRCUIT BOARD 6.1 Indoor unit: BDS28A, BDS35A No Part name 1 DC fan 2 Microswitch 3 Electrostatic precipitation 4 Small up & down

11 7. Control functions 7.1. Temperature Parameters • Indoor preset temperature (Tpreset) • Indoor ambient temperature (Tamb) 7.2. Basic functions

12 7.2.2 Dehumidifying mode 7.2.2.1 The condition and process of dehumidifying If Tamb. > Tpreset, DRY mode will act, the indoor fan, outdoor fan

13 7.2.3.3 Protection function ♦ Anti-cold – wind protection In HEAT mode, in order to prevent the indoor unit from blowing out cold wind, each time

14 ② Protection a) In cooling operation, protection is the same as that under the cooling mode; b) In heating operation, protection is the same as th

15 ⑦ Faults of temperature sensors Designation of sensors Faults Indoor ambient temperature The sensor is detected to be open-circuited or short-c

16 8.3 Flashing LED of Indoor/Outdoor unit and primary judgement Display Method of Indoor Unit Indicator Display (during blinking, ON 0.5s and OFF 0.

17 10 Malfunction protection of jumper cap C5 Blinks 15 times Wireless remote receiver and button are effective, but can not dispose the related

18 19 Decrease frequency due to high air discharge F9 Blinks 9 times Blinks twice All loads operate normally, while operation frequency for comp

19 30 Module high temperature protection P8 Blinks 19 times During cooling operation, compressor will stop while indoor fan will operate; Durin

2 Serie / Series / Serie / Serie TECHNICAL MANUAL MONO DC INVERTER Emissione / Issu

20 42 Indoor unit and outdoor unit does not match LP Blinks 19 times Blinks 16 times compressor and outdoor fan motor can’t work Indoor unit and

21 8.4. How to check simply the main part 8.4.1 Indoor Unit: 8.4.1.1 Temperature sensor malfunction (F1/F2) F1 and F2 malfuncti

22 8.4.1.2 Indoor fan does not operate (H6 Malfunction) Possible causes: 1. Fan motor is locked; 2. The feedback terminal of PG motor is not connecte

23 8.4.1.3. Jumper cap malfunction (C5) Possible causes: 1. There is no jumper cap on the controller; 2. Jumper cap is not inserted properly and tigh

24 8.4.1.4 Communication Malfunction (E6) 1. Check if connection wire between indoor and outdoor units and wire inside the unit are connected well. 2

25 8.4.2 Outdoor Unit: 8.4.2.1 Key detection points Test2Test4Test1Test3Test5Test6Test7Test8 Test9 Test point SN Test point Related specification

26 8.4.2.2. Capacitor charging malfunction (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main detection point: • Use AC

27 • If the working loads of the machine are too hight? If the radiation is good? • If the charge volume of refrigerant is correct? Fault diagnosis

28 8.4.2.4. High temperature and overload protection diagnosis (AP1 herinafter refers to control board of the outdoor unit) Main detection point: ● I

29 8.4.2.6 Diagnosis for compressor Out of step (synchronism)(AP1 hereinafter refers to control board of the outdoor unit) Main detection point: ● Wh

3 Index 1. SPECIFICATIONS ...

30 8.4.2.8 Power factor correction (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Main detec

31 8.4.2.9 Communication malfunction (following AP1 for outdoor unit control board) Main detection point: ● Detect the indoor and outdoor units conne

32 Appendix 1: Resistance table for indoor/outdoor ambient temperature sensors (numerical value of resistance) (15K) Temp. (°C) Resistance (kΩ) Tem

33 Appendix 2: Resistance table for indoor/outdoor tube temperature sensor (20K) Temp. (°C) Resistance (kΩ) Temp. (°C) Resistance (kΩ) Temp. (°C)

34 Appendix 3: form for indoor/outdoor unit’s air exhaust temperature sensor numerical value of resistance Temp. (°C) Resistance (kΩ) Temp. (°C) R

Via Gettuglio Mansoldo (Loc. La Macia) 37040 Arcole Verona, Italy Tel. +39 - 045.76.36.585 r.a. Fax +39 - 045.7

4 1. SPECIFICATIONS Models of indoor units BDS28A BDS35A Rated voltage 220-240V ~50Hz kW 2,5(0,7 ~ 4,4) 3,5(0,7 ~ 4,5) Total capacity Btu/h 8,5

5 Fan motor capacitor μF / / Air flow volume of outdoor unit m³/h 2000 2000 Fan type-piece Axial-flow Fan diameter mm Φ445 Φ445 Defrosting m

6 2. CHARACTERISTICS DATA 2.1 Operation characteristic curve Cooling0246810505151 0 20 30 40 60 70 80 90020304060708090Compressor speed (rps)Current

7 Heating: Temperature conditions (°C) Standard pressure Heat exchanger pipe temp. Indoor Outdoor Model name P(MPa) T1 (°C) T2 (°C) Indoor fan spee

8 4. REFRIGERANT DIAGRAM TINUROODTUOTINUROODNIHEATEXCHANGE(EVAPORATOR)HE ATEXCHANGE(CONDENSER)COMPRESSORGAS SIDE3-WAY VALVELIQUID SIDE2-WAY VALVECOOL

9 5. ELECTRICAL CIRCUIT DIAGRAM 5.1 Indoor units: BDS28A, BDS35A RT2RT10L-OUTAC-LYEGNBNBKBUGENERATORCOOL PLASMACONN WIREYEGN0PEM2M4M3RECEIVERANDEVAPO