Airwell BS 12 DCI Service manual
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BS DCI Series Indoor Units BS 12 DCI Outdoor Units GC 12 DCI REFRIGERANT R410A SM BS DCI 1-A.1 GB HEAT PUMP OCTOBER – 2008 CONTENTS LIST OF EFFECTIVE PAGES LIST OF EFFECTIVE PAGES Note: Changes in the pages are indicated by a “Revision#” in the footer of each effected page (when none indicates no changes in the relevant page). All pages in the following list represent effected/ non effected pages divided by chapters. Dates of issue for original and changed pages are: Original ....... 0 ........ May 2005 Total number of pages in this publication is 68 consisting of the following: Page No. Revision No. # Page No. Revision No. # Page No. Revision No. # Title ....................... 1 A ........................... 1 i ............................. 1 1-1 - 1-3 ................ 1 2-1 ........................ 1 3-1 ........................ 1 4-1 ........................ 1 5-1 - 5-5 ................ 1 6-1 - 6-2 ................ 1 7-1 ........................ 1 8-1 ........................ 1 9-1 ........................ 1 10-1 ...................... 1 11-1-11-16............. 1 12-1-12-6 .............. 1 13-1-13-5 .............. 1 Appendix -A ...........1 • Zero in this column indicates an original page. *Due to constant improvements please note that the data on this service manual can be modified with out notice. **Photos are not contractual SM BS DCI 1- A.1 GB A CONTENTS TABLE OF CONTENTS Table of Contents 1. INTRODUCTION ...................................................................................................1-1 2. PRODUCT DATA SHEET ......................................................................................2-1 3. RATING CONDITIONS ..........................................................................................3-1 4. OUTLINE DIMENSIONS .......................................................................................4-1 5. PERFORMANCE DATA & PRESSURE CURVES ...............................................5-1 6. AIRFLOW CURVES ..............................................................................................6-1 7. ELECTRICAL DATA ..............................................................................................7-1 8. WIRING DIAGRAMS .............................................................................................8-1 9. REFRIGERATION DIAGRAMS .............................................................................9-1 10. TUBING CONNECTIONS......................................................................................10-1 11. CONTROL SYSTEM .............................................................................................11-1 12. TROUBLESHOOTING ..........................................................................................12-1 13. EXPLODED VIEWS AND SPARE PARTS LISTS .................................................13-1 14. APPENDIX A .........................................................................................................14-1 SM BS DCI 1- A.1 GB i INTRODUCTION 1. INTRODUCTION 1.1 General The new BS 12 DCI ducted Unit is another completion to the DC inverter units range, Which includes several types such as wall mounted, floor /ceiling, cassettes, and multi splits. 1.2 Main Features The BS 12 DCI benefits from the most advanced technological innovations, namely : ● DC Inverter Technology. ● R410A. ● Microprocessor control. ● Infrared remote control with liquid crystal display. ● High COP. ● Pre-Charged units up to the max allowing tubing distance. ● Cooling operation at outdoor temperature down to -10ºC. ● Heating operation at outdoor temperature down to -15ºC. ● Advanced test and diagnostics mode. ● M2L diagnostics softwear cable port (for PC) ● Network connectivity. ● The Indoor unit can be easily modified to a vertical or horizontal installation up to 4 different air inlet and discharge applications. ● Base heater connection. ● Easy installation and service. 1.3 Indoor Unit The indoor unit is a Low Silhouette ducted unit, and can be easily fitted to many types of residential and commerciaBS applications. It includes: ● Casing with interchangeable metal sheet paneBS, allowing verticality between vertical and horizontal installation. ● Two centrifugal indoor fans. ● Coil with treated aluminum fins. ● Advanced electronic control box assembly. ● Interconnecting wiring terminal block. ● Easily accessible, and re-usable pre-filters (mesh). SM BS DCI 1- A.1 GB 1-1 CONTENTS INTRODUCTION 1.4 Control The microprocessor indoor controller, and an infrared remote control, supplied as standard, provide complete operating function and programming. For further detaiBS please refer to the Operation Manual, Appendix A. 1.5 Outdoor Unit The GC 12 DCI outdoor unit can be installed as floor or wall mounted by using a wall supporting bracket. The metal sheets are protected by anti- corrosion paint work allowing long life resistance. All outdoor units are pre-charged. For further information please refer to the Product Data Sheet, Chapter 2. It includes : ● Single DC inverter Rotary Compressor mounted in a soundproofed compartment ● DC Inverter Outdoor Fan Motor ● Advanced controller. ● Axial fan. ● Outdoor coil with hydrophilic louver fins. ● Outlet air fan grill. Outdoor Unit Features: 1.6 Feature GC 12 DCI Diagnostics Display 3 LED’s Base Heater Optional Outdoor Fan Variable speed DC Inverter M2L cable Port No Tubing Connections Flare type interconnecting tubing to be produced on site. For further detaiBS please refer to the Installation Manual, Appendix A 1.7 Inbox Documentation Each unit is supplied with its own installation and operation manuaBS, SM BS DCI 1- A.1 GB 1-2 CONTENTS INTRODUCTION 1.8 Matching Table R410A INDOOR UNITS OUTDOOR UNITS MODEL REFRIGER. WNG25 GC 9 DCI R410A √ GC 12 DCI R410A WNG35 K25 K35 PXD25 √ √ PXD35 BS 12 DCI √ √ √ √ The above table lists outdoor units and BS DCI indoor unit which can be matched together. In addition the listed outdoor units can be matched with other types of indoor units such as cassettes and wall mounted. For further information please refer to the relevant Service Manual. SM BS DCI 1- A.1 GB 1-3 CONTENTS PRODUCT DATA SHEET 2. PRODUCT DATA SHEET 2.1 BS 12 DCI / GC 12 DCI R410A Model Indoor Unit Model Outdoor Unit Installation Method of Pipe Characteristics Capacity (1) OUTDOOR INDOOR Power input (1) EER (Cooling) or COP(Heating) (1) Energy efficiency class Power supply Rated current Starting current Circuit breaker rating Fan type & quantity Fan speeds H/M/L H/M/L Air flow (2) External static pressure Min-Max H/M/L Sound power level (3) H/M/L Sound pressure level(4) Moisture removal Condensate drain tube I.D Dimensions WxHxD Weight Package dimensions WxHxD Packaged weight Units per pallet Stacking height Refrigerant control Compressor type, model Fan type & quantity Fan speeds H/L Air flow H/L Sound power level H/L H/L Sound pressure level (4) Dimensions WxHxD Weight Package dimensions WxHxD Packaged weight Units per pallet Stacking height Refrigerant type Refrigerant chargless distance Additional charge per 1 meter Liquid line Suction line Connections between Max.tubing length units Max.height difference Operation control type Heating elements Others (1) (2) (3) (4) BS 12 DCI GC 12 DCI Units Btu/hr kW kW W/W V/Ph/Hz A A A RPM m3/hr Pa dB(A) dB(A) l/hr mm mm kg mm kg units units RPM m3/hr dB(A) dB(A) mm kg mm kg Units units kg/m g/m In.(mm) In.(mm) m. m. Flared Cooling Heating 11940(5118-15686) 14663(5118-18760) 3.5(1.5-4.6) 4.3(1.6-5.5) 0.96 (0.42-1.45) 1.34(0.4-1.8) 3.65 3.21 A C 220-240V/Single/50Hz 4.3 5.8 10.5 12 Centrifugal x 2 1150/1000/760 830/700/530 25 59/55/52 42/38/35 1.3 16 860x245x680 30 1055x305x728 33.5 6 units per pallet 6 leveBS EEV Single Rotary DC Inverter, Panasonic 5RS0102XAB Propeller(direct) x 1 830 1780 62 52 795x610x290 38 945X655X395 42.5 9 units per pallet 3 leveBS R410A 1.2 /7.5m No need 1/4”(6.35) 3/8”(9.53) Max.20 Max. 10 Remote control kW Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511. Airflow in ducted units; at nominal external static pressure. Sound power in ducted units is measured at air discharge. Sound pressure level measured at 1 meter distance from unit. SM BS DCI 1- A.1 GB 2-1 CONTENTS RATING CONDITIONS 3. RATING CONDITIONS Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). Cooling: Indoor: 27oC DB 19oC WB Outdoor: 35 oC DB Heating: Indoor: 20oC DB Outdoor: 7oC DB 6oC WB 3.1 Operating Limits 3.1.1 R410A Indoor o Outdoor o 46oC DB Upper limit 32 C DB 23 C WB -10oC DB Lower limit 21oC DB 15oC WB 27oC DB 24oC DB 18oC WB Upper limit Heating 10oC DB -15oC DB -16oC WB Lower limit 198 – 264 V Voltage Cooling SM BS DCI 1- A.1 GB 3-1 CONTENTS OUTLINE DIMENSIONS 4. OUTLINE DIMENSIONS 4.1 Indoor Unit: BS 12 DCI 4.2 Outdoor Unit: GC 12 DCI SM BS DCI 1- A.1 GB 4-1 CONTENTS PERFORMANCE DATA & PRESSURE CURVES 5. PERFORMANCE DATA 5.1 BS 12 DCI 5.1.1 Cooling Capacity (kW) - Run Mode 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB/WB TEMPERATURE [oC] OD COIL ENTERING AIR DB TEMPERATURE [oC] DATA TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI -10 - 20 (protection range) 25 30 35 40 46 22/15 24/17 27/19 29/21 32/23 3.38 2.65 0.75 3.22 2.58 0.84 3.06 2.51 0.93 2.89 2.45 1.02 2.70 2.37 1.13 80 - 110 % of nominal 80 - 105 % of nominal 25 - 50 % of nominal 3.60 3.83 4.05 2.70 2.75 2.81 0.77 0.78 0.80 3.44 3.66 3.88 2.63 2.69 2.74 0.87 0.86 0.89 3.28 3.72 3.50 2.57 2.62 2.67 0.96 0.95 0.97 3.12 3.56 3.34 2.50 2.55 2.61 1.03 1.05 1.06 2.92 3.14 3.36 2.42 2.47 2.53 1.14 1.15 1.17 4.27 2.86 0.81 4.11 2.79 0.90 3.94 2.73 0.99 3.78 2.66 1.08 3.58 2.58 1.18 LEGEND TC SC PI WB DB ID OD 5.1.2 – – – – – – – Total Cooling Capacity, kW Sensible Capacity, kW Power Input, kW Wet Bulb Temp., (oC) Dry Bulb Temp., (oC) Indoor Outdoor Capacity Correction Factors Cooling Capacity Ratio Vs. Outdoor Temperature 1.20 Capacity Ratio 1.10 1.00 0.90 0.80 0.70 0.60 0.50 20 25 30 35 40 45 Outdoor Temperature [deg C] SM BS DCI 1- A.1 GB 5-1 CONTENTS PERFORMANCE DATA & PRESSURE CURVES 5.1.3 Heating Capacity (kW) - Run Mode) 230[V] : Indoor Fan at High Speed ID COIL ENTERING AIR DB TEMPERATURE [oC] OD COIL ENTERING AIR DB/WB TEMPERATURE [oC] -15/-16 -10/-12 -7/-8 -1/-2 2/1 7/6 10/9 15/12 15-24 (Protection Range) DATA 15 20 25 TC PI TC PI TC PI TC PI TC PI TC PI TC PI TC PI TC PI 2.74 0.80 3.05 0.97 3.28 1.09 3.39 1.16 3.47 1.20 4.49 1.26 4.74 1.33 4.99 1.41 2.55 0.89 2.86 1.05 3.09 1.17 3.20 1.24 3.28 1.28 4.30 1.34 4.55 1.42 4.80 1.49 85 - 105 % of nominal 80 - 120 % of nominal 2.35 0.97 2.66 1.13 2.90 1.26 3.01 1.32 3.09 1.36 4.11 1.42 4.36 1.50 4.60 1.57 LEGEND TH PI WB DB ID OD 5.1.4 – – – – – – Total Heating Capacity, kW Power Input, kW Wet Bulb Temp., (oC) Dry Bulb Temp., (oC) Indoor Outdoor Capacity Correction Factors Heating Capacity Ratio Vs. Outdoor Temperature Capacity Ration 1.20 1.10 1.00 0.90 0.80 0.70 0.60 0.50 -15 -10 -5 0 5 10 15 Outdoor WB Temperature [deg C] SM BS DCI 1- A.1 GB 5-2 CONTENTS PERFORMANCE DATA & PRESSURE CURVES 5.1.5 Capacity Correction Factor Due to Tubing Length Capacity Ratio BS 12 DCI: Cooling 1.01 1.00 0.99 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Tubing Length [m ] 5.1.6 Heating Capacity Ratio 1.02 1.00 0.98 0.96 0.94 0.92 0.90 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Tubing Length [m ] SM BS DCI 1- A.1 GB 5-3 CONTENTS PERFORMANCE DATA & PRESSURE CURVES 5.2 Pressure Curves 5.2.1. Model: BS 12 DCI Cooling — Test Mode Suction Pressure Vs.Outdoor Temp. Suction Pressure [kPa] 1400 Indoor 1300 DB/WB 1200 22/15 1100 24/17 1000 900 27/19 800 29/21 700 32/23 600 500 10 15 20 25 30 35 40 45 Outdoor DB Temperature [ºC ] Discharge Pressure [kPa] Discharge Pressure Vs.Outdoor Temp. 4000 3750 3500 3250 3000 2750 2500 2250 2000 1750 1500 1250 1000 Indoor DB/WB 22/15 24/17 27/19 29/21 32/23 10 15 20 25 30 35 40 45 Outdoor DB Temperature [ºC ] SM BS DCI 1- A.1 GB 5-4 CONTENTS PERFORMANCE DATA & PRESSURE CURVES 5.2.2. Heating — Test Mode Suction Pressure [kPa] Suction Pressure Vs.Outdoor Temp. 1300 1200 1100 indoor DB 1000 900 800 700 600 500 400 300 200 -15 15 20 25 -10 -5 0 5 10 15 Outdoor WB Temperature [ºC] Discharge Pressure [kPa] Discharge Pressure Vs.Outdoor Temp. 4000 3750 3500 3250 3000 2750 2500 2250 2000 1750 1500 1250 1000 -15 Indoor DB 15 20 25 -10 -5 0 5 10 15 Outdoor WB Temperature [ºC] SM BS DCI 1- A.1 GB 5-5 CONTENTS AIRFLOW CURVES 6. AIRFLOW CURVES Model: BS 12 DCI Airflow Vs. External Static Pressure S DCI External Static Pressure, [Pa] 60 50 The System characteristics defines recommended motor speeds range vs.static pressure Super High High Medium Low Nominal System Resistance 40 Max.System Resistance Operating range Curve's colors according to fan motor wires colors 30 20 Point for Performance test 10 0 300 400 500 600 700 800 900 1000 1100 1200 Air Flow Rate, [m^3/hr] Airflow Correction Factors (Test Mode, at nominal rating conditions) Air Flow Rate [% of nominal] Cooling Heating 60% 70% 80% 90% 100% TC 0.88 0.91 0.94 0.97 1.00 SC 0.78 0.84 0.89 0.95 1.00 PI 0.95 0.97 0.98 0.99 1.00 PI 0.90 0.92 0.95 0.97 1.00 TC 1.07 1.05 1.03 1.02 1.00 LEGEND TC – Total Capacity SC – Sensible Capacity PI – Power Input SM BS DCI 1- A.1 GB 6-1 CONTENTS ELECTRICAL DATA 7. ELECTRICAL DATA 7.1 Single Phase Unit MODEL BS 12 DCI To indoor Power Supply 1PH-230V-50Hz Max Current, A 10 Inrush Current A 35 Starting Current A 10.5 Circuit Breaker A 16 Power Supply Wiring No. X Cross Section mm2 3x1.5 mm2 Interconnecting Cable No. X Cross Section mm2 4x1.5 mm2 (a) Inrush current is the current when power is up (charging the DC capacitors at outdoor unit controller). (b) Starting current is the current at compressor start up. NOTE Power wiring cord should comply with local lows and electrical regulations requirements. SM BS DCI 1- A.1 GB 7-1 CONTENTS White Black Red Brown P14 P4 1 2 P1 1 2 P16 P17 P18 P21 P22 P2 1 2 OAT P19 1 2 SM BS DCI 1- A.1 GB CONTENTS Blue Red Black Y/G Y/G L-F N EARTH EARTH NCOM COM COM L N-F EMI f i l t er PCB FUSE N/3 L/4 Blue Brown Red Brown Y/G megatool P6 1 2 3 4 Y/G C/5 EEV P7 6 5 4 3 2 1 Red magnetic ring JP9 1 2 3 4 5 6 POWER SUPPLY Blue Brown Y/G Red Model: BS 12 DCI P12 8.1 EARTH WIRING DIAGRAMS L N COM N-COM P8 1 2 Display 8. P10 P20 1 2 OCT CTT SUCT Outdoor unit controller PCB U V W P3 P9 P11 P13 1 2 3 4 5 6 Vdc Red Base heater Black Reverse valve Orange Choke coil Blue COMP EARTH Vcc Vsp Yellow Blue OFAN FG OUTDOOR UNIT CIRCUIT DIAGRAM WIRING DIAGRAMS 8-1 REFRIGERATION DIAGRAMS 9. REFRIGERATION DIAGRAMS 9.1 Heat Pump Models 9.1.1 BS 12 DCI EEV EEV SM BS DCI 1- A.1 GB 9-1 CONTENTS TUBING CONNECTIONS 10. TUBING CONNECTIONS TUBE (Inch) ¼” ⅜” ½” ⅝” ¾” 11-13 13-20 11-13 40-45 13-20 11-13 60-65 18-25 11-13 70-75 18-25 11-13 80-85 40-50 11-13 TORQUE (Nm) Flare Nuts Valve Cap Service Port Cap 1. 2. 3. 4. 5. 6. 7. 8. Valve Protection Cap-end Refrigerant Valve Port (use Allen wrench to open/close) Valve Protection Cap Refrigerant Valve Service Port Cap Flare Nut Unit Back Side Copper Tube When the outdoor unit is installed above the indoor unit an oil trap is required every 5m along the suction line at the lowest point of the riser. Incase the indoor unit is installed above the outdoor, no trap is required. SM BS DCI 1- A.1 GB 10-1 CONTENTS CONTROL SYSTEM 11. CONTROL SYSTEM 11.1 General Functions and Rules (for single split models) The DCI software is fully parametric. All the model dependent parameters are shown in Blue color and with Italic sty [parameter]. The parameters values are given in the last section of this control logic chapte service manual. 11.2 System Operation Concept The control function is divided between indoor and outdoor unit controll Indoor unit is the system ‘Master’, requesting the outdoor unit for cooling/hea capacity supply. The outdoor unit is the system ‘Slave’ and it must supply required capacity unless it enters into a protection mode avoiding it f supplying the requested capacity. The capacity request is transferred via indoor to outdoor communication, an represented by a parameter called ‘NLOAD’. NLOAD is an integer number w values between 0 and 127, and it represents the heat or cool load felt by indoor unit. 11.3 Compressor Frequency Control 11.3.1 NLOAD setting The NLOAD setting is done by the indoor unit controller, based on a PI contro scheme. The actual NLOAD to be sent to the outdoor unit controller is based on the preliminary LOAD calculation, the indoor fan speed, and the power shedding function. NLOAD limits as a function of indoor fan speed: Indoor Fan Speed Low Medium High Turbo Auto Maximum NLOAD Cooling Max NLOADIF1C Max NLOADIF2C Max NLOADIF3C Max NLOADIF4C Max NLOADIF5C Maximum NLOAD Heating 127 127 127 127 127 NLOAD limits as a function of power shedding: 11-1 SM BS DCI 1- A.1 GB CONTENTS CONTROL SYSTEM 11.3.2 Target Frequency Setting The compressor target frequency is a function of the NLOAD number sent from the indoor controller and the outdoor air temperature. Basic Target Frequency Setting: NLOAD 127 10 < NLOAD < 127 10 0 Target Frequency Maximum frequency Interpolated value between minimum and maximum frequency Minimum frequency Compressor is stopped Target frequency limits as a function of outdoor air temperature (OAT): OAT Range Cool mode limits Heat mode limits OAT < 6 6 OAT < 15 15 OAT < 24 24 OAT MaxFreqAsOATC No limit No limit MaxFreqAsOAT1H MaxFreqAsOAT2H 11.3.3 Frequency Changes Control Frequency change rate is 1 Hz/sec. 11.3.4 Compressor Starting Control Frequency Step 3 Step 2 Step 1 1 Minute 1 Minute Time Min 10 Minutes 11.3.5 Minimum On and Off Time 3 minutes SM BS DCI 1- A.1 GB 11-2 CONTENTS CONTROL SYSTEM 11.4 Indoor Fan Control 10 Indoor fan speeds are determined for each model. 5 speeds for cool/dry/fan modes and 5 speeds for heat mode. When user sets the indoor fan speed to a fixed speed (Low/ Medium/ High), unit will operate constantly at set speed. When Auto Fan is selected, indoor unit controller can operate in all speeds. The actual speed is set according to the cool/heat load. 11.4.1 Turbo Speed The Turbo speed is activated during the first 30 minutes of unit operation when auto fan speed is selected and under the following conditions: x Difference between set point and actual room temperature is bigger then 3 degrees. x Room temperature > 22 for cooling, or < 25 for heating. 11.5 Heating Element Control Heating element can be started if LOAD > 0.8 * MaximumNLOAD AND Indoor Coil temperature < 45. The heating element will be stopped when LOAD < 0.5 * MaximumNLOAD OR if Indoor Coil temperature > 50. 11.6 Outdoor Fan Control 7 outdoor fan speeds are determined for each model. 3 speeds for cool and dry modes, and 3 speeds for heat mode, and a very low speed. Outdoor fan speed is a function of compressor frequency and outdoor air temperature (OAT). 4 routines for fan control are determined. The control routine selection depends on operation mode, compressor speed, and outdoor air temperature (OAT) and heat sink temperature (HST). Routine A B C D Conditions Heating with OAT < 150C or Cooling with OAT > 200C, or HST > 500C or Faulty OAT Cooling with 200C > OAT > 70C Cooling with 70C > OAT Heating with OAT > 150C 11-3 SM BS DCI 1- A.1 GB CONTENTS CONTROL SYSTEM Compre CF = 0 10 CF < OFLowFreq OFLowFreq CF < OFMedFreq OFMedFreq CF Routine A OFF Low Medium High Outdoor Fan Speed Routine B Routine C OFF Low Low Low OFF Very Low Very Low Low Rou O L L Me In cooling mode, the extra rule is as the below: HST Change To Higher OFAN Cool state (*1) 50 45 Change To lower OFAN Cool state (*1) If State C, change to B If State B, change to A When compressor is switched to OFF and the heat sink temperature is abo degrees, the outdoor fan will remain ON in low speed for up to 3 minutes. 11.7 EEV (electronic Expansion valve) Control x x x x x EEV opening is defined as EEV = EEVOL + EEVCV EEVOL is the initial EEV opening as a function of the compressor frequency operation mode, unit model and capacity. EEVCV is a correction value for the EEV opening that is based on the comp temperature. During the first 10 minutes of compressor operation EEVCV = 0. Once the first 10 minutes are over, the correction value is calculated as fol EEVCV(n) = EEVCV(n-1) + EEVCTT EEVCTT is the correction based on the compressor temperature. A target compressor temperature is set depending on frequency and outdoor air temperature, and the actual compressor temperature is compared to the ta temperature to set the required correction to the EEV opening. SM BS DCI 1- A.1 GB 11-4 CONTENTS CONTROL SYSTEM 11.9 Ionizer Control Ionizer is on when unit is on AND indoor fan is on AND Ionizer power switch (on Ionizer) is on. 11.10 Electro Static Filter (ESF) Control ESF is on when ESF switch is on, Safety switch is pressed, unit is on, AND indoor fan is on. 11.11 Base Heater Control When OAT is connected, Base Heater will be on when unit is in heating and OAT<20C. When OAT is disconnected, Base Heater will be on when unit is in heating. 11.12 Fan Mode In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed. In Auto Fan user setting, fan speed will be adjusted automatically according to the difference between actual room temperature and user set point temperature. 11.13 Cool Mode NLOAD is calculated according to the difference between actual room temperature and user set point temperature by PI control. In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed. In Auto Fan user setting, fan speed will be adjusted automatically according to the calculated NLOAD. 11.14 Heat Mode NLOAD is calculated according to the difference between actual room temperature and user set point temperature by PI control. In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed. In AutoFan user setting, fan speed will be adjusted automatically according to the calculated NLOAD. 11.15 Temperature Compensation In wall mounted, ducted, and cassette models, 3 degrees are reduced from room temperature reading (except when in I-Feel mode), to compensate for temperature difference between high and low areas in the heated room, and for coil heat radiation on room thermistor. The temperature compensation can be enabled/disabled by shortening of J2 on the indoor unit controller. 11-5 SM BS DCI 1- A.1 GB CONTENTS CONTROL SYSTEM Model J2 Shorted J2 Opened Wall mounted Cassette Ducted Floor/Ceiling Compensation Disabled Compensation Enabled Compensation Enabled Compensation Disabled Compensation Enabled Compensation Disabled Compensation Disabled Compensation Enabled 11.16 Indoor Fan Control in Heat Mode Indoor fan speed depends on the indoor coil temperature: ICTST ICTVL ICTL ICTH ICTT 11.17 Auto Cool/Heat Mode When in auto cool heat mode unit will automatically select between cool and heat mode according to the difference between actual room temperature and user set point temperature (T). Unit will switch from cool to heat when compressor is off for 3 minutes, and T < -3. Unit will switch from heat to cool when compressor is off for 5 minutes, and T < -3. 11.18 Dry Mode As long as room temperature is higher then the set point, indoor fan will work in low speed and compressor will work between 0 and MaxNLOADIF1C Hz. When the room temperature is lower than the set point, compressor will be switched OFF and indoor fan will cycle 3 minutes OFF, 1 minute ON. 11.19 Protections There are 5 protection codes. Normal (Norm) – unit operate normally. Stop Rise (SR) – compressor frequency can not be raised but does not have to be decreased. HzDown1 (D1) – Compressor frequency is reduced by 2 to 5 Hz per minute. HzDown2 (D2) – Compressor frequency is reduced by 5 to 10 Hz per minute. Stop Compressor (SC) – Compressor is stopped. SM BS DCI 1- A.1 GB 11-6 CONTENTS CONTROL SYSTEM Indoor Coil Defrost Protection 11.19.1 ICT Fast Increasing Increasing ICT < -2 -2 ICT < 0 0 ICT < 2 2 ICT < 4 4 ICT < 6 6 ICT < 8 8 ICT SC D1 SR SR Norm Norm SC D1 SR SR Norm Norm ICT Trend No change SC D2 D1 SR SR Norm Normal Decreasing Fast Decreasing SC D2 D2 D1 SR SR SC D2 D2 D2 D1 SR Indoor Coil over Heating Protection 11.19.2 ICT Fast Decreasing Decreasing ICT > 55 53 < ICT 55 49 < ICT 53 47 < ICT 49 45 < ICT 47 43 < ICT 45 ICT 43 SC D1 SR SR Norm Norm SC D1 SR SR Norm Norm ICT Trend No Change SC D2 D1 SR SR Norm Normal Increasing Fast Increasing SC D2 D2 D1 SR SR SC D2 D2 D2 D1 SR 11.19.3 Compressor over Heating Protection Compressor temperature can be in one of 5 control zones (4 in protection, and 1 normal), according to the following chart. CTT Stop-Compresor CTTOH4 CTTOH3 CTTOH2 CTTOH1 P3 P2 P1 Normal 11-7 SM BS DCI 1- A.1 GB CONTENTS CONTROL SYSTEM Compressor Temperature Control Status Increases Else P1 Norm SR P2 D1 SR P3 D2 D1 Stop Compressor SC Compressor over Current Protection 11.19.4 CCR Stop-Compresor CCROC4 HzDown2 CCROC3 HzDown1 CCROC2 Stop-Rise CCROC1 Normal 11.19.5 HST HST > 90 85 < HST 90 82 < HST 85 80 < HST 82 78 < HST 80 HST 78 Heat Sink over Heating Protection (NA for DCI 25 and 35 Decreasing SC D1 SR SR Norm HST Trend No Change SC D2 D1 SR Norm Normal Increasing SC D2 D2 D1 SR SM BS DCI 1- A.1 GB 11-8 CONTENTS CONTROL SYSTEM Outdoor Coil Deicing Protection 11.19.6 Deicing Starting Conditions: Deicing operation will start when either one of the following conditions exist: x Case 1: OCT < OAT – 8 AND TLD > DI x Case 2: OCT < OAT – 12 AND TLD > 30 minutes. x Case 3: OCT is Invalid AND TLD > DI x Case 4: Unit is just switched to STBY AND OCT < OAT – 8 x Case 5: NLOAD = 0 AND OCT < OAT -8 OCT – Outdoor Coil Temperature OAT – Outdoor Air Temperature TLD – Time from Last Deicing DI – Deicing Interval (Time Interval between Two Deicing) Deicing interval time when compressor is first started in heat mode, is 10 minutes if OCT < -2, and is 40 minutes in other cases. Deicing interval time is changed (increased/ decreased in 10 minutes steps) as a function of deicing time. If deicing time is shorter then former deicing time, the deicing interval time will be increased. If deicing time is longer then former deicing time, the deicing interval time will be decreased. Deicing Protection Procedure 11.19.7 OCT 12 0 Threshold COMP ON T1 T2 T1 max. 12 minutes RV COOL OFAN DT HEAT T3 T3 ON OFF EEVDeicerOpen EEV Any T1 = T2 = 36 seconds, T3 = 6 seconds 11-9 SM BS DCI 1- A.1 GB CONTENTS CONTROL SYSTEM 11.20 Condensate Water Over Flow Protection Each of the pins P1, P2, P3 can have two options: 1 – When it is shorted with P4 0 – When it is not shorted to P4 3 Levels Logic (used in floor/ceiling models) 11.20.1 P2 0 1 1 0 P3 0 0 1 1 Level L0 L1 L2&3 L4 Water Level LEVEL4 LEVEL2&3 LEVEL1 ON Pump OFF ANY NLOAD 0 BLINK OPER LED NORMAL SM BS DCI 1- A.1 GB 11-10 CONTENTS CONTROL SYSTEM 11.20.2 1 Level Logic (used in all models except for floor/ceiling models) P2 Don’t care Don’t care P3 Level 1 Normal 0 Overflow Overflow when unit is ON Overflow Water Level Overflow when unit is OFF Normal ON OPER LED OFF BLINK ANY NLOAD NLOAD is forced to 0 0 ON PUMP OFF 8 min 8 min 8 min 11.21 Indoor Unit Dry Contact Indoor unit Dry contact has two alternative functions that are selected by J8. J8 = Open J8 = Short Function Presence Detector Connection Power Shedding Function Contact = Open No Limit No Limit Contact = Short Forced to STBY Limit NLOAD 11.22 Operating the Unit from the Mode Button Forced operation allows starting, stopping and operating in Cooling or Heating, in pre-set temperature according to the following table: Forced operation Mode Pre-set Temperature Cooling 200C Heating 280C 11-11 SM BS DCI 1- A.1 GB CONTENTS CONTROL SYSTEM 11.23 On Unit Controls and Indicators 11.23.1 Indoor Unit Controller Controls and Indicators for All Models STAND BY INDICATOR 1. Lights up when the Air Conditioner is connected to power and ready to receive the R/C commands 1. 2. Lights up during operation. Blinks for 300 msec., to announce that a R/C infrared signal has been received and stored. Blinks continuously during protections (according to the relevant spec section). OPERATION INDICATOR 3. TIMER INDICATOR Lights up during Timer and Sleep operation. FILTER INDICATOR Lights up when Air Filter needs to be cleaned. COOLING INDICATOR Lights up when system is switched to Cool Mode by using the Mode Switch on the unit. HEATING INDICATOR Lights up when system is switched Heat Mode by using the Mode Switch on the unit. Mode SWITCH (COOL/HEAT/OFF) Every short pressing , the next operation mode is selected, in this order : SB Cool Mode Heat Mode SB … In long pressing system enters diagnostic mode. RESET / FILTER SWITCH For short pressing: When Filter LED is on - turn off the FILTER INDICATOR after a clean filter has been reinstalled. When Filter LED is off – enable/disable the buzzer announcer, if selected. 11.24 Outdoor Unit Controller Indicators Unit has three LED’s. SB LED is ON when power is ON (230 VAC, even when no communication). STATUS LED is ON when COMP is ON, and Blinks according to diagnostics mode definitions when either fault or protection occurs. FAULT LED Blinks according to diagnostics mode definitions when either fault or protection occurs. 11.25 Jumper Settings 11.25.1 Indoor Unit Controller Self test Jumper – J1: 0 = Open Jumper (disconnect jumper) / 1 = Close Jumper (connect jumper). OPERATION SELF-TEST NORMAL J1 1 0 Compensation Jumper – J2 Model J2 (Default) Compensation FLO/FLO18/FLO30 0 Activated SX/AC 1 Deactivated BS/K/KS 1 Activated SM BS DCI 1- A.1 GB 11-12 CONTENTS CONTROL SYSTEM Family selection Jumper – J3, J4, J5 and J6 Family J6 J5 J4 J3 FLO 0 0 1 1 SX 0 1 0 0 KS 0 1 0 1 BS 0 1 1 0 K 0 1 1 1 FLO 18 1 0 0 0 FLO 30 1 0 0 1 Model selection Jumper – J7, J8 Model J8 J7 A B C D 0 0 1 1 0 1 0 1 J9- Presence Detector/Power Shedding OPERATION J9 Presence Detector 0 Power Shedding 1 Jumper – J10 OPERATION FLO DCI LCD LED J10 0 1 Note: Jumper 10 states will be ignored for families other than FLO / FLO 18 / FLO 30 (for otherfamilies it will always be LED operation). 11.25.2 Outdoor Unit Controller JP9 JUMPER LAYOUT Reserved (PIN 9) ODU3 (PIN 7) ODU2 (PIN 5) GND (PIN 10) GND (PIN 8) GND (PIN 6) 11.25.3 ODU1 (PIN 3) GND (PIN 4) ODU0 (PIN 1) GND (PIN 2) ODU MODEL SELECTION ODU3 OFF OFF OFF OFF OFF OFF OFF OFF ON (PIN7 & PIN8) ON (PIN7 & PIN8) ON (PIN7 & PIN8) ON (PIN7 & PIN8) ON (PIN7 & PIN8) ON (PIN7 & PIN8) ON (PIN7 & PIN8) ON (PIN7 & PIN8) ODU2 OFF OFF OFF OFF ON (PIN5 & PIN6) ON (PIN5 & PIN6) ON (PIN5 & PIN6) ON (PIN5 & PIN6) OFF OFF OFF OFF ON (PIN5 & PIN6) ON (PIN5 & PIN6) ON (PIN5 & PIN6) ON (PIN5 & PIN6) ODU1 OFF OFF ON (PIN3 & PIN4) ON (PIN3 & PIN4) OFF OFF ON (PIN3 & PIN4) ON (PIN3 & PIN4) OFF OFF ON (PIN3 & PIN4) ON (PIN3 & PIN4) OFF OFF ON (PIN3 & PIN4) ON (PIN3 & PIN4) ODU0 OFF ON (PIN1 & PIN2) OFF ON (PIN1 & PIN2) OFF ON (PIN1 & PIN2) OFF ON (PIN1 & PIN2) OFF ON (PIN1 & PIN2) OFF ON (PIN1 & PIN2) OFF ON (PIN1 & PIN2) OFF ON (PIN1 & PIN2) ODU Model Reserved A (DCI 25) B (DCI 35) C (DCI 50) D E (Duo) F G H I J K L M N O 11-13 SM BS DCI 1- A.1 GB CONTENTS CONTROL SYSTEM 11.26 Test Mode 11.26.1 Entering Test Mode System can enter Test mode in two ways: • Automatically when the following conditions exists for 30 minutes continuously: o Mode = Cool, Set point = 16, Room temperature = 27 }1, Outdoor temperature = 35 }1 Or o Mode = Heat, Set point = 30, Room temperature = 20 }1, Outdoor temperature = 7 }1 • Manually when entering diagnostics with the following settings: o Mode = Cool, Set point = 16 o Mode = Heat, Set point = 30 11.27 Unit Operation in Test Mode In test mode, the unit will operate in fixed settings according to the indoor fan speed setting: Indoor Fan Speed Setting Unit Setting Low Minimum Capacity Setting High Nominal Capacity Setting Auto Maximum Capacity Setting During test mode, protections are disabled, except for stop compressor status. 11.28 SW Parametera 11.28.1 Indoor Unite SW Parameters General Parameters for All Models: Parameters defining the indoor fan speed as a function of Indoor Coil temperature in heat mode (ICT): ICTVLSpeed ICT to stop indoor fan ICTVLSpeed ICT to go down to very low speed ICTLSpeed ICT to start in very low speed ICTHSpeed ICT to start in increase speed from very low ICTTSpeed ICT to enable Turbo fan speed 25 28 30 32 40 SM BS DCI 1- A.1 GB 11-14 CONTENTS CONTROL SYSTEM Model Depended Parameters: Wall Mounted Models Parameter name DCI 9 DCI 12 DCI 18 DCI 21 NLOAD limits as a function of selected indoor fan speed MaxNLOADIF1C 40 40 40 40 MaxNLOADIF2C 53 53 53 53 MaxNLOADIF3C 120 120 120 120 MaxNLOADIF4C 127 127 127 127 MaxNLOADIF5C 127 127 127 127 Indoor Fan speeds IFVLOWC 700 700 700 800 700 800 800 900 1000 IFMEDC 900 950 1050 1100 IFHIGHC 1050 1100 1200 1250 IFTURBOC 1150 1200 1250 1300 IFVLOWH 700 700 700 800 IFLOWH 800 850 900 950 IFMEDH 950 1000 1100 1150 IFHIGHH 1100 1150 1200 1250 IFTURBOH 1200 1250 1300 1300 Nominal Compressor Frequency NomLoadC 40 62 62 85 NomLoadH 55 67 74 80 Parameter Name Floor mounted / Ducted 9 12 BS 12 18 NLOAD limits as a function of selected indoor fan speed MaxNLOADIF1C 40 40 40 40 MaxNLOADIF2C 53 53 53 53 MaxNLOADIF3C 120 120 120 120 MaxNLOADIF4C 127 127 127 127 MaxNLOADIF5C 127 127 127 127 Nominal Compressor Frequency NomLoadC 42 63 56 69 NomLoadH 61 71 76 77 11-15 SM BS DCI 1- A.1 GB CONTENTS CONTROL SYSTEM 11.28.2 Outdoor Units SW Parameters: Parameter Name MinFreqC MaxFreqC MinFreqH MaxFreqH Step1Freq Step2Freq Step3Freq DCI 9 30 64 30 81 60 70 90 DCI 12 DCI 18 Compressor Parameters 33 20 80 85 35 20 93 99 60 60 70 70 90 90 DCI50 DUO DCI 21 20 97 26 106 60 80 90 20 95 26 94 60 70 90 Frequency limits as a function of outdoor air temperature MaxFreqAsOATC MaxFreqAsOAT1H MaxFreqAsOAT2H 50 65 60 50 75 60 64 85 60 62 85 60 85 80 60 90 95 102 105 94 98 102 105 10 10.5 10.8 11.2 11.4 11.8 12.2 12.6 200 600 830 920 600 920 1000 200 550 700 790 550 700 790 40 70 40 86 35 55 40 60 Compressor Over Heating Protection CTTOH1 CTTOH2 CTTOH3 CTTOH4 94 98 102 105 94 98 102 105 94 98 102 105 Compressor Over Current Protection [A] CCR01 CCR02 CCR03 CCR04 7.1 7.5 7.9 8.3 7.1 7.5 7.9 8.3 10 10.5 10.8 11.2 Outdoor Fan Speed (RPM) VL OFLOWC OFMEDC OFMAXC OFLOWH OFMEDH OFMAXH 200 550 700 830 550 700 830 200 550 700 830 550 700 830 200 600 760 920 600 830 1000 Outdoor Fan Limit Control OFLowFreqC OFMedFreqC OFLowFreqH OFMedFreqH 45 57 45 57 45 57 45 57 40 70 40 86 SM BS DCI 1- A.1 GB 11-16 CONTENTS TROUBLESHOOTING 12. TROUBLESHOOTING WARNING!!! When Power Up – the whole outdoor unit controller, including the wiring, is under HIGH VOLTAGE!!! Never open the Outdoor unit before turning off the Power!!! When turned off, the system is still charged (400V)!!! It takes about 4 Min. to discharge the system. Touching the controller before discharging may cause an electrical shock!!! 12.1 Single Split system failures and corrective actions No SYMPTOM 1 Power supply indicator (Red LED) does not light up. Unit does not respond to remote control message 2 3 Unit responds to remote control message but Operate indicator (Green LED) does not light up Indoor fan does not start (louvers are opened and Green LED does light up) 4 5 6 7 8 PROBABLE CAUSE No power supply Remote control message not reached the indoor unit Problem with display PCB Unit in heat mode and coil is still not warm. Problem with PCB or capacitor Indoor fan works when unit is OFF, and indoor fan speed is not changed by remote control command. Compressor does not start Compressor stops during operation and Green LED remains on Compressor is on but outdoor fan does not work CORRECTIVE ACTION Check power supply. If power supply is OK, check display and display wiring. if OK, replace controller. Check remote control batteries, if batteries are OK, check display and display wiring, if OK, replace display PCB. If still not OK replace controller. Replace display PCB. If still not OK replace controller. Change to cool mode and check. Change to high speed and Check power supply to motor is higher than 130VAC (for triack controlled motor) or higher than 220VAC for fixed speed motors, if OK replace capacitor, if not replace controller Replace controller PCB problem Electronics control problem or protection Electronic control or power supply problem Problem with outdoor electronics or outdoor fan SM BS DCI 1- A.1 GB Perform diagnostics , and follow the actions described. Perform diagnostics ,and follow the actions described. Check outdoor fan motor according to the procedure in section, if not OK replace controller 12-1 CONTENTS TROUBLESHOOTING No 9 10 11 12 13 14 15 16 12.2 SYMPTOM Unit works in wrong mode (cool instead of heat or heat instead of cool) All components are operating properly but no cooling or no heating Compressor is over heated and unit does not generate capacity Units goes into protections and compressor is stopped with no clear reason Compressor motor is generating noise and no suction occurs Water leakage from indoor unit Freezing of outdoor unit in heat mode and outdoor unit base is blocked with ice Unit operates with wrong fan speeds or wrong frequency PROBABLE CAUSE CORRECTIVE ACTION Electronics or power connection to RV Check RV power connections, if OK, Check RV operation with direct 230VAC power supply, if OK, Replace outdoor controller. Refrigerant leak Check refrigeration system. EEV problem Check EEV Control problem or refrigeration system problem Perform diagnostics and follow the actions described. Phase order to compressor is wrong Check compressor phase order. Indoor unit drainage tube is blocked Check and open drainage tube. Connect base heater. Wrong jumper settings Perform diagnostics, and check if units is operating by EEPROM parameters. Checking the refrigeration system Checking system pressures and other thermodynamic measures should be done when system is in Test Mode (in Test mode, system operates in fixed settings). The performance curves given in this manual are given for unit performance in test mode when high indoor fan speed is selected. Entering test mode: Set unit to Cool/16 degrees/High indoor fan speed, or Heat/30 degrees/High indoor fan speed, and enter diagnostics. SM BS DCI 1- A.1 GB 12-2 CONTENTS TROUBLESHOOTING Judgment by Indoor/Outdoor Unit Diagnostics 12.3 Enter diagnostics mode - press for five seconds Mode/Reset button in any operation mode. Acknowledgment is by 3 short beeps and lights of all Display LED’s. Then, The units will enter into Indoor and Outdoor unit diagnostic modes. During the Outdoor unit diagnostics all three Indoor LED’s (STBY/Operate, Filter and Timer) are blinking. When Indoor diagnostics is displayed, all three LED’s (STBY/Operate, Filter and Timer) are ON. When system enters diagnostics mode, only one fault code is shown. Order of priority is from the lower to the higher number. Diagnostics is continuously ON as long as power is ON. The current system operation mode will not be changed. If no fault occurred in the system, no fault code will be displayed during normal operation mode. The last fault code will be displayed even if the system has recovered from that fault. The last fault will be deleted from the EEPROM after the system has exit diagnostics mode. In diagnostics mode, system fault / status will be indicated by blinking of Filter & Timer LEDs. The coding method will be as follows: Filter LED will blink 5 times in 5 seconds, and then will be shut off for the next 5 seconds. Timer LED will blink during the same 5 seconds according to the following Indoor / Outdoor unit tables: Note: 0 – OFF, 1-ON 12.3.1 No 1 Indoor unit Diagnostics 5 4 3 2 1 RT-1 is disconnected Problem 2 RT-1 is shorted 3 RT-2 is disconnected 4 RT-2 is shorted 5 Reserved 7 Communication mismatch 8 No Communication 9 No Encoder 0 0 1 1 0 0 1 1 0 1 10 11 … 17 Reserved Outdoor Unit Fault Reserved Defrost protection 18 Deicing Protection 19 Outdoor Unit Protection 20 Indoor Coil HP Protection 21 Reserved 22 24 Reserved EEPROM Not Updated 25 Bad EEPROM 26 Bad Communication 27 Using EEPROM data 28 Model A 29 Model B 30 Model C 31 Model D SM BS DCI 1- A.1 GB 12-3 CONTENTS TROUBLESHOOTING 12.3.2 Indoor unit diagnosis and corrective actions No. 1 2 3 4 5 6 7 8 9 Fault Probable Cause Sensor failures of all types Indoor and Outdoor controllers are Communication with different versions mismatch No Communication Communication or grounding wiring is not good. Indoor electronics or motor No Encoder Check Indoor to Outdoor wiring and grounding Check motor wiring, if ok, replace motor, if still not ok, replace Indoor controller. Outdoor controller problem Switch to Outdoor diagnostics. Outdoor Unit Fault System is using ROM parameters and No action, unless special EEPROM Not not EEPROM parameters parameters are required for Updated unit operation. No action, unless special Bad EEPROM parameters are required for unit operation. Indoor to Outdoor wiring Communication quality is low reliabilityCheck Bad Communication and grounding No problem. System is using Using EEPROM EEPRRRROM parameters data 12.3.3 No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 21 22 23 … 27 Corrective Action Check sensor connections or replace sensor Replace Indoor controller Outdoor Unit Diagnostics Problem OCT is disconnected OCT is shorted CTT is disconnected CTT is shorted HST is disconnected (when enabled) HST is shorted (when enabled) OAT is disconnected (when enabled) OAT is shorted (when enabled) TSUC is disconnected (when enabled) TSUC is shorted (when enabled) IPM Fault Bad EEPROM DC under voltage DC over voltage AC under voltage Indoor / Outdoor unit Communication mismatch No Communication Reserved Heat sink Over Heating Deicing Compressor Over Heating Compressor Over Current Reserved Bad Communication 5 4 3 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 1 1 1 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 0 1 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 1 0 1 1 SM BS DCI 1- A.1 GB 12-4 CONTENTS TROUBLESHOOTING 12.3.4 Outdoor unit diagnosis and corrective actions NO 1 Fault Probable Cause Sensors failures of all types Electronics HW problem 2 IPM Fault 3 Bad EEPROM 4 DC under/over Voltage 5 AC under Voltage 6 Indoor / Outdoor unit Communication mismatch 7 No Communication 8 Compressor Lock 9 Bad Communication 12.4 Electronics HW problem Indoor and Outdoor controllers are with different versions Communication or grounding wiring is not good. Communication quality is low reliability Corrective Action Check sensors connections or replace sensors. Check all wiring and jumper settings, if OK, replace electronics. No action, unless special parameters are required for unit operation. Check outdoor unit power supply voltage Check outdoor unit power supply voltage Replace Indoor controller Check Indoor to Outdoor wiring and grounding Switch unit to STBY and restart Check Indoor to Outdoor wiring and grounding Judgment by MegaTool MegaTool is a special tool to monitor the system states. Using MegaTool requires: x A computer with RS232C port. x A connection wire for MegaTool. x A special MegaTool software. Use MegaTool according to following procedure: x x x Setup MegaTool software: copy the software to the computer. Connect RS232C port in computer with MegaTool port in Indoor/Outdoor unit controller by the connection wire. Run the software and choose the COM port, you can monitor the A/C system state in monitor tab. 12.5 Simple procedures for checking the Main Parts 12.5.1 Checking Mains Voltage. Confirm that the Mains voltage is between 198 and 264 VAC. If Mains voltage is out of this range, abnormal operation of the system is expected. If in range check the Power (Circuit) Breaker and look for broken or loosed cable lugs or wiring mistake(s). SM BS DCI 1- A.1 GB 12-5 CONTENTS TROUBLESHOOTING 12.5.2 Checking Power Input. If Indoor unit power LED is unlighted, power down the system and check the fuse of the Indoor unit. If the fuse is OK replace the Indoor unit controller. If the fuse has blown, replace the fuse and power up again. Checking Power Input procedure for the Outdoor unit is the same as with the Indoor unit. 12.5.3 Checking the Outdoor Fan Motor. Enter Test Mode (where the OFAN speed is high) Check the voltage between lead wires according to the normal value as following: x Between red wire and black wire: 310VDC +/- 20V x Between orange wire and black wire: 15VDC +/- 1V x Between yellow wire and black wire: 2-6VDC 12.5.4 Checking the Compressor. The compressor is brushless permanence magnetic DC motor. Three coil resistance is same. Check the resistance between three poles. The normal value should be below 0.5 ohm (TBD). 12.5.5 Checking the Reverse Valve (RV). Running in heating mode, check the voltage between two pins of reverse valve connector, normal voltage is 220VAC. 12.5.6 Checking the electrical expansion valve (EEV). The EEV has two parts, drive part and valve. The drive part is a step motor; it is ringed on the valve. Check the drive voltage (12VDC). When Outdoor unit is power on, EEV shall run and have click and vibration. 12.6 Precaution, Advise and Notice Items 12.6.1 High voltage in Outdoor unit controller. Whole controller, including the wires that are connected to the Outdoor unit controller may have the potential hazard voltage when power is on. Touching the Outdoor unit controller may cause an electrical shock. Advise: Don’t touch the naked lead wire and don’t insert finger, conductor or anything else into the controller when power is on. 12.6.2 Charged Capacitors Three large-capacity electrolytic capacitors are used in the Outdoor unit controller. Therefore, charging voltage (380VDC) remains after power down. Discharging takes about four minutes after power is off. Touching the Outdoor unit controller before discharging may cause an electrical shock. 12.6.3 x x Additional advises When disassemble the controller or the front panel, turn off the power supply. When connecting or disconnecting the connectors on the PCB, hold the whole housing, don’t pull the wire. SM BS DCI 1- A.1 GB 12-6 CONTENTS EXPLODED VIEWS AND SPARE PARTS LISTS 13. EXPLODED VIEWS AND SPARE PARTS LISTS 13.1 Indoor Unit: BS 12 DCI SM BS DCI 1- A.1 GB 13-1 CONTENTS EXPLODED VIEWS AND SPARE PARTS LISTS 13.2 Indoor Unit: BS 12 DCI SM BS DCI 1- A.1 GB 13-2 CONTENTS EXPLODED VIEWS AND SPARE PARTS LISTS 13.3 Indoor Unit: BS 12 DCI No. Part No. Description Qty. 1 462350005 COIL BS 035 1 2 SP000000094 INSULATED FAN BASE ASSY BS 035/040/055 1 3 433316 BRACKET 4 4 403439 LT FAN ASSY EBS 50/60,GTW11/18 1 5 407038 MOTOR BRACKET FCR/FCX/EBS 2 6 438600 REMOTE CONTROL RC RC3 1 7 403879 AIR INLET FRAME ASSY BS 035/040/055 1 8 403546 AIR FILTER 830*216 GTW 11/15/18 1 9 403794 MOTOR 73W, 5S GTW 11 1 10 403438 RT FAN ASSY EBS 50/60,GTW11/18 1 11 442256 CAPACITOR 400V 4mF 1 12 433605 STORM2 CONTROL 1 13 402730 CABLE 8 WIRES 7M WTH CONNECTORS 1 14 402713 WIRE DISPLAY BOX EMD/ELD 1 15 403877 AIR OUTLET FRAME ASSY BS 035/040/055 1 16 489117 RELAY AC, SPST, 30A 1 17 402640 THERMISTOR WTH CONNECTOR L1400 1 18 400276 THERMISTOR+CAP WTH CONNECTOR L1400 1 SM BS DCI 1- A.1 GB 13-3 CONTENTS EXPLODED VIEWS AND SPARE PARTS LISTS 13.4 Outdoor Unit: GC 12 DCI SM BS DCI 1- A.1 GB 13-4 CONTENTS EXPLODED VIEWS AND SPARE PARTS LISTS 13.5 No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Outdoor Unit: GC 12 DCI Part No. Description Unit 433218 4526340 433223 4526476 4527092 433215 4523060 4526299 4526403 4524177 4524176 4526224 4526396 4526223 4526968 4526222 4526300 4526220 4526219 204107 4519188 433229 4522509 4526367 4526393 4518952 4518951 4526221 4526204 4526775 4526774 4526776 4526969 4526828 4526827 4519606 433228 4526368 4526298 4519614 4526480 4519300 433225 4519607 Front panel A Air inlet ring-420 Painting insulation plate Axial fan OD=401 DC motor for DCI25/35 Motor support Base painting Assy. Partition Outdoor DC inverter controller (English) Gas valve (R410A) Liquid valve(R410A) EMI fliter board 901-098-00 Chock Assy. 167-021-01 AC-IN connected wire Earthing wire for DCI Fuse connecting wire Therminal sheet Fuse stand JEF-511B(EHK P/N:150-038-00) Fuse 65TS(15A,230)150-031-00 Cable clip nylon 4 poles terminal block Value cover 4-Way valve coil 4-way valve welding Assy. (DCI25) 4-way valve welding Assy. (DCI35) 4-way valve (DCI25) 4-way valve (DCI35) Compressor wire DC Inverter compressor Assy. 5RS102XAB Compressor top thermistor(CTT) Outside air thermistor(OAT) Outside coil thermistor(OCT) Suction coil thermistor(SUCT) EEV Coil (CAN-MD 12FKS-1 White) Electronic expansion value (CAMB20YGFKS-1) Right side panel Back side net Condenser soldering assy Bridge Painting top cover Gasket for axial fan Nut M5 L Handle Left side panel painting plate SM BS DCI 1- A.1 GB 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 13-5 CONTENTS APPENDIX A APPENDIX A INSTALLATION AND OPERATION MANUAL ► OPERATING MANUAL BS 12 DCI ► INSTALLATION MANUAL BS 12 DCI 14-1 SM BS DCI 1- A.1 GB CONTENTS ">

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