Related Manuals for Electra DNG DC Series
Summary of Contents for Electra DNG DC Series
- Page 1 DNG DC Inverter Series Indoor Units Outdoor Units DNG 50 DCI DCI 50 DNG 60 DCI DCI 60 DCI 72 DNG 72 DCI DCI 72Z DNG 80 DCI DCI 80 REFRIGERANT R410A HEAT PUMP APRIL 2007 CONTENT...
- Page 2 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.
- Page 3 TABLE OF CONTENTS Table of Contents INTRODUCTION ....................1-1 PRODUCT DATA SHEET ..................2-1 RATING CONDITIONS ..................3-1 OUTLINE DIMENSIONS ..................4-1 PERFORMANCE DATA & PRESSURE CURVES ..........5-1 AIRFLOW CURVES ....................6-1 SOUND LEVEL CHARACTERISTICS ..............7-1 ELECTRICAL DATA ....................8-1 WIRING DIAGRAMS .....................9-1 10. REFRIGERATION DIAGRAMS ................10-1 11.
- Page 4 INTRODUCTION INTRODUCTION General The DNG DCI ducted split unit range comprises the following RC (heat pump) models • DNG 50 • DNG 60 • DNG 72 • DNG 80 Remote control compatibility • The DNG unit is compatible with remote controls RC3, RC4, RCW1, RCW2. Main Features The DNG DCI series benefits from the most advanced technological innovations, namely:...
- Page 5 INTRODUCTION Indoor Unit The indoor unit is a low silhouette ducted unit, and can be easily fitted to many types of residential and commercials applications. It includes: • High technology plastic fan and fan housing. • A drain pool that is under the entire unit with internal downward slope. •...
- Page 6 INTRODUCTION Outdoor Unit The DNG DCI INV outdoor units can be installed as floor or wall mounted units 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.
- Page 7 INTRODUCTION 1.11 Matching Table 1.11.1 R410A INDOOR UNITS OUTDOOR UNITS MODEL DNG 50 DCI DNG 60 DCI DNG 72 DCI DNG 80 DCI REFRIGER √ DCI 50 R410A √ DCI 60 R410A DCI 72 √ R410A DCI 72Z √ DCI 80 R410A The above table lists outdoor units and DNG/DCI indoor units which can be matched together.
- Page 8 PRODUCT DATA SHEET PRODUCT DATA SHEET DNG50 DCI Model Indoor Unit DNG 50 DCI Model Outdoor Unit DCI 50 R410A Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 17060(5460-21840) 20470(4780-26270) Capacity 5.0(1.6 - 6.4) 6.0(1.4 - 7.7) Power input 1.55(0.5- 2.2) 1.6(0.4- 2.0) EER (Cooling) or COP(Heating)
- Page 9 PRODUCT DATA SHEET DNG60 DCI Model Indoor Unit DNG 60 DCI Model Outdoor Unit DCI 60 R410A Installation Method of Pipe Flared Characteristics Units Cooling Heating 22520(6140- Btu/hr 19110(5460-22520) 27300) Capacity 5.6 (1.6 - 6.6) 6.6 (1.8 - 8.0) Power input 1.86(0.5 - 2.25) 1.80 (0.5 - 2.08) EER (Cooling) or COP(Heating)
- Page 10 PRODUCT DATA SHEET DNG72 DCI Model Indoor Unit DNG 72 DCI Model Outdoor Unit DCI 72 R410A Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 23200(5460-27300) 25930(6140-30030) Capacity 6.8(1.6-8.0) 7.6(1.8-8.8) Power input 2.26(0.55 - 2.68) 2.08(0.5 - 2.5) EER (Cooling) or COP(Heating) 3.01 3.65...
- Page 11 PRODUCT DATA SHEET DNG72Z DCI Model Indoor Unit DNG 72 DCI Model Outdoor Unit DCI 72 Z R410A Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 23200(5460-27300) 25930(6140-30030) Capacity 6.80(1.60-8.00) 7.60(1.80~8.80) Power input 2.26(0.58-2.90) 2.08(0.50~2.50) EER (Cooling) or COP(Heating) 3.01 3.65 Energy efficiency class...
- Page 12 PRODUCT DATA SHEET DNG80 DCI Model Indoor Unit DNG 80 DCI Model Outdoor Unit DCI 80 R410A Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 25590(5460-30710) 30030(6140-35830) Capacity 7.5(1.6-9.0) 8.8(1.8-10.5) Power input 2.48(0.55-3.15) 2.44(0.5-2.8) EER (Cooling) or COP(Heating) 3.02 3.61 Energy efficiency class...
- Page 13 RATING CONDITIONS RATING CONDITIONS Standard conditions in accordance with ISO 5151 and ISO 13253 (for ducted units) and EN 14511. Cooling: Indoor: C DB 19 C WB Outdoor: 35 C DB Heating: Indoor: C DB Outdoor: 7 C DB 6 C WB Operating Limits Indoor...
- Page 14 OUTLINE DIMENSIONS OUTLINE DIMENSIONS Indoor Unit: DNG 50, 60, 72, 80 Model DNG50,60,72,80 790 653 749 758 684 162 242 Service Manual - DNG DCI Revision Y07-02 CONTENT...
- Page 15 OUTLINE DIMENSIONS Outdoor Unit: DCI 50 Outdoor Unit: DCI 60 Revision Y07-02 Service Manual - DNG DCI CONTENT...
- Page 16 OUTLINE DIMENSIONS Outdoor Unit: DCI 72/80 Service Manual - DNG DCI Revision Y07-02 CONTENT...
- Page 17 PERFORMANCE DATA & PRESSURE CURVES PERFORMANCE DATA & PRESSURE CURVES DNG50 DCI / DCI 50 5.1.1 Cooling Capacity (kW) ID COIL ENTERING AIR DB/WB TEMPERATURE [C OD COIL ENTERING AIR DB DATA 22/15 24/17 27/19 29/21 32/23 TEMPERATURE [C 80 - 110 % of nominal -10 - 20 80 - 105 % of nominal (protection range)
- Page 18 PERFORMANCE DATA & PRESSURE CURVES 5.1.3 Heating ID COIL ENTERING AIR DB TEMPERATURE [C OD COIL ENTERING AIR DB/WB DATA TEMPERATURE [C 3.82 3.55 3.29 -15/-16 0.96 1.06 1.16 4.25 3.98 3.72 -10/-12 1.16 1.26 1.35 4.58 4.31 4.04 -7/-8 1.31 1.40 1.50...
- Page 19 PERFORMANCE DATA & PRESSURE CURVES 5.1.5 Pressure Curves Cooling – Test Mode) Suction Pressure VS.Outdoor Temp'. 1400 Indoor DB/WB 1300 Temp. 1200 1100 22/15 1000 24/17 27/19 29/21 32/23 Outdoor DB Temperature[ºC] Discharge Pressure VS. Outdoor Temp'. 4000 3750 Indoor DB/WB 3500 Temp.
- Page 20 PERFORMANCE DATA & PRESSURE CURVES 5.1.6 Pressure Curves Heating – Test Mode) Suction Pressure VS.Outdoor Temp'. 1100 Indoor DB 1000 Temp'. Outdoor WB Temperature[ºC] Discharge Pressure VS. Outdoor Temp'. 3900 Indoor DB 3650 Temp'. 3400 3150 2900 2650 2400 2150 1900 1650 1400...
- Page 21 PERFORMANCE DATA & PRESSURE CURVES 5.1.7 Capacity Correction Factor Due to Tubing Length Cooling 1.00 0.95 0.90 0.85 0.80 Tubing Length(m) Heating 1.05 1.00 0.95 0.90 0.85 0.80 0.75 Tubing Length(m) Service Manual - DNG DCI Revision Y07-02 CONTENT...
- Page 22 PERFORMANCE DATA & PRESSURE CURVES DNG60 DCI / DCI 60 5.2.1 Cooling Capacity (kW) ID COIL ENTERING AIR DB/WB TEMPERATURE [C OD COIL ENTERING AIR DB DATA 22/15 24/17 27/19 29/21 32/23 TEMPERATURE [C 80 - 110 % of nominal -10 - 20 80 - 105 % of nominal (protection range)
- Page 23 PERFORMANCE DATA & PRESSURE CURVES 5.2.3 Heating ID COIL ENTERING AIR DB TEMPERATURE [C OD COIL ENTERING AIR DB/WB DATA TEMPERATURE [C 4.20 3.91 3.61 -15/-16 1.08 1.19 1.30 4.68 4.38 4.09 -10/-12 1.30 1.41 1.52 5.03 4.74 4.45 -7/-8 1.47 1.58 1.69...
- Page 24 PERFORMANCE DATA & PRESSURE CURVES 5.2.5 Pressure Curves Cooling – Test Mode) Suction Pressure VS.Outdoor Temp'. 1400 Indoor DB/WB 1300 Temp. 1200 22/15 1100 24/17 1000 27/19 29/21 32/23 Outdoor DB Temperature [ºC] Discharge Pressure VS. Outdoor Temp'. 4000 Indoor DB/WB 3750 Temp.
- Page 25 PERFORMANCE DATA & PRESSURE CURVES 5.2.6 Pressure Curves Heating – Test Mode) Suction Pressure VS.Outdoor Temp'. 1300 1200 Indoor DB 1100 Temp'. 1000 Outdoor WB Temperature[ºC] Discharge Pressure VS. Outdoor Temp'. 3750 3500 Indoor DB 3250 Temp'. 3000 2750 2500 2250 2000 1750...
- Page 26 PERFORMANCE DATA & PRESSURE CURVES 5.2.7 Capacity Correction Factor Due to Tubing Length Cooling 1.05 1.00 0.95 0.90 0.85 0.80 Tubing Length(m) Heating 1.00 0.90 0.80 0.70 0.60 0.50 Tubing Length(m) 5-10 Revision Y07-02 Service Manual - DNG DCI CONTENT...
- Page 27 PERFORMANCE DATA & PRESSURE CURVES DNG72 DCI / DCI72, DNG72 DCI / DCI 72Z 5.3.1 Cooling Capacity (kW) ID COIL ENTERING AIR DB/WB TEMPERATURE [C OD COIL ENTERING AIR DB DATA 22/15 24/17 27/19 29/21 32/23 TEMPERATURE [C 80 - 110 % of nominal -10 - 20 80 - 105 % of nominal (protection range)
- Page 28 PERFORMANCE DATA & PRESSURE CURVES 5.3.3 Heating ID COIL ENTERING AIR DB TEMPERATURE [C OD COIL ENTERING AIR DB/WB DATA TEMPERATURE [C 4.84 4.50 4.16 -15/-16 1.25 1.38 1.50 5.38 5.05 4.71 -10/-12 1.50 1.63 1.76 5.80 5.46 5.12 -7/-8 1.70 1.82 1.95...
- Page 29 PERFORMANCE DATA & PRESSURE CURVES 5.3.5 Pressure Curves Cooling – Test Mode) Suction Pressure VS.Outdoor Temp'. 1400 1300 Indoor DB/WB 1200 Temp. 1100 22/15 1000 24/17 27/19 29/21 32/23 Outdoor DB Temperature [ºC] Discharge Pressure VS. Outdoor Temp'. 4000 Indoor DB/WB 3750 3500 Temp.
- Page 30 PERFORMANCE DATA & PRESSURE CURVES 5.3.6 Pressure Curves Heating – Test Mode) Suction Pressure VS.Outdoor Temp'. 1300 Indoor DB 1200 1100 Temp'. 1000 Outdoor WB Temperature[ºC] Discharge Pressure VS. Outdoor Temp'. 3950 3700 Indoor DB 3450 Temp'. 3200 2950 2700 2450 2200 1950...
- Page 31 PERFORMANCE DATA & PRESSURE CURVES 5.3.7 Capacity Correction Factor Due to Tubing Length Cooling 1.05 1.00 0.95 R410A 2.4Kg 0.90 R410A 4.2Kg 0.85 0.80 0.75 Tubing Length(m) Heating 1.05 1.00 0.95 R410A 2.4Kg 0.90 R410A 4.2Kg 0.85 0.80 0.75 Tubing Length(m) Service Manual - DNG DCI Revision Y07-02 5-15...
- Page 32 PERFORMANCE DATA & PRESSURE CURVES DNG80 DCI / DCI 80 5.4.1 Cooling Capacity (kW) ID COIL ENTERING AIR DB/WB TEMPERATURE [C OD COIL ENTERING AIR DB DATA 22/15 24/17 27/19 29/21 32/23 TEMPERATURE [C 80 - 110 % of nominal -10 - 20 80 - 105 % of nominal (protection range)
- Page 33 PERFORMANCE DATA & PRESSURE CURVES 5.4.3 Heating ID COIL ENTERING AIR DB TEMPERATURE [C OD COIL ENTERING AIR DB/WB DATA TEMPERATURE [C 5.60 5.21 4.82 -15/-16 1.46 1.61 1.76 6.23 5.84 5.45 -10/-12 1.77 1.91 2.06 6.71 6.32 5.93 -7/-8 1.99 2.14 2.29...
- Page 34 PERFORMANCE DATA & PRESSURE CURVES 5.4.5 Pressure Curves Cooling – Test Mode) Suction Pressure VS.Outdoor Temp'. 1400 Indoor DB/WB 1300 Temp. 1200 22/15 1100 24/17 1000 27/19 29/21 32/23 Outdoor DB Temperature [ºC] Discharge Pressure VS. Outdoor Temp'. 4000 3750 Indoor DB/WB 3500 Temp.
- Page 35 PERFORMANCE DATA & PRESSURE CURVES 5.4.6 Pressure Curves Heating – Test Mode) Suction Pressure VS.Outdoor Temp'. 1300 1200 Indoor DB 1100 Temp'. 1000 Outdoor WB Temperature[ºC] Discharge Pressure VS. Outdoor Temp'. 3950 3700 Indoor DB 3450 Temp'. 3200 2950 2700 2450 2200 1950...
- Page 36 PERFORMANCE DATA & PRESSURE CURVES 5.4.7 Capacity Correction Factor Due to Tubing Length Cooling 1.00 0.95 R410A 2.75Kg 0.90 R410A 4.2Kg 0.85 0.80 0.75 Tubing Length(m) Heating 1.05 1.00 0.95 R410A 2.75Kg 0.90 R410A 4.2Kg 0.85 0.80 0.75 Tubing Length(m) 5-20 Revision Y07-02 Service Manual - DNG DCI...
- Page 37 AIRFLOW CURVES AIRFLOW CURVES Model: DNG 50 DCI Model: DNG 60 DCI Service Manual - DNG DCI Revision Y07-02 CONTENT...
- Page 38 AIRFLOW CURVES Model: DNG 72 DCI Model: DNG 80 DCI Revision Y07-02 Service Manual - DNG DCI CONTENT...
- Page 39 AIRFLOW CURVES DNG UNITS RANGE AIR FLOW CORRECTION FACTORS (at nominal rating conditions — Test mode). Air Flow Rate [% of nominal] 100% 0.88 0.91 0.94 0.97 0.78 0.84 0.89 0.95 Cooling 0.95 0.97 0.98 0.99 1.07 1.05 1.03 1.02 Heating 0.90 0.92...
- Page 40 SOUND LEVEL CHARACTERISTICS SOUND LEVEL CHARACTERISTICS Sound Pressure Level 2m duct in 2m duct in supply air area return air area static pressure Unit test point 1.4m (2(AB) Mic. Figure 1 Soud Pressure Level Spectrum (Measured as Figure 1) DNG 50 DNG 60 FAN SPEED LINE...
- Page 41 SOUND LEVEL CHARACTERISTICS DNG 72 DNG 80 FAN SPEED LINE Revision Y07-02 Service Manual - DNG DCI CONTENT...
- Page 42 SOUND LEVEL CHARACTERISTICS Outdoor units Unit Mic. Ground Figure 2 Sound Pressure Level Spectrum (Measured as Figure 2 DCI 50 Cooling DCI 50 Heating DCI 60 Cooling DCI 60 Heating Service Manual - DNG DCI Revision Y07-02 CONTENT...
- Page 43 SOUND LEVEL CHARACTERISTICS DCI 72 Cooling DCI 72 Heating DCI 72Z Cooling DCI 72Z Heating Revision Y07-02 Service Manual - DNG DCI CONTENT...
- Page 44 SOUND LEVEL CHARACTERISTICS DCI 80 Cooling DCI 80 Heating Service Manual - DNG DCI Revision Y07-02 CONTENT...
- Page 45 ELECTRICAL DATA ELECTRICAL DATA Single Phase Units Model DNG50 DNG60 DNG72 DNG80 Power Supply 1 PH ,220-240VAC ,50HZ Outdoor Connected to Indoor or Outdoor Maximum Current Inrush Current 45 A Starting Current 15 A Circuit Breaker 20 A Power Supply Wiring no х cross section 3 X 2.5 mm²...
- Page 46 WIRING DIAGRAMS WIRING DIAGRAMS Indoor Unit: DNG 50 DCI Indoor Unit: DNG 60 DCI Service Manual - DNG DCI Revision Y07-02 CONTENT...
- Page 47 WIRING DIAGRAMS Indoor Unit: DNG 72/80 DCI Revision Y07-02 Service Manual - DNG DCI CONTENT...
- Page 48 WIRING DIAGRAMS Outdoor Unit: DCI 50/60 9.4.1 DCI 50/60 for Indoor Power Supply OUTDOOR UNIT CIRCUIT DIAGRAM CHOKE OFAN COIL REVERSE BASE COMP VALVE HEATER (OPTIONAL) 1 2 3 4 U V W ODU CONTROLLER PCBA EARTH N COM N-COM EMI FILTER PCBA EARTH EARTH...
- Page 49 WIRING DIAGRAMS Outdoor Unit: DCI 72Z Revision Y07-02 Service Manual - DNG DCI CONTENT...
- Page 50 WIRING DIAGRAMS Outdoor Unit: DCI 72/80 Service Manual - DNG DCI Revision Y07-02 CONTENT...
- Page 51 REFRIGERATION DIAGRAMS REFRIGERATION DIAGRAMS 10.1 Heat Pump Models 10.1.1 DNG 50/60/72/80 Cooling mode Heating mode Service Manual - DNG DCI Revision Y07-02 10-1 CONTENT...
- Page 52 TUBING CONNECTIONS TUBING CONNECTIONS TUBE (Inch) ¼” ⅜” ½” ⅝” ¾” TORQUE (Nm) Flare Nuts 15-18 40-45 60-65 70-75 80-85 Valve Cap 13-20 13-20 18-25 18-25 40-50 Service Port Cap 11-13 11-13 11-13 11-13 11-13 Valve Protection Cap-end Refrigerant Valve Port (use Allen wrench to open/close) Valve Protection Cap Refrigerant Valve Service Port Cap...
- Page 53 CONTROL SYSTEM CONTROL SYSTEM 12.1 General Functions and Operating Rules The DCI software is fully parametric. All the model dependent parameters are shown in Blue color and with Italic style [parameter]. The parameters values are given in the last section of this control logic chapter of the service manual.
- Page 54 CONTROL SYSTEM Target frequency limits as a function of outdoor air temperature (OAT): OAT Range Cooling Mode limits Heating Mode limits OAT < 6 No limit 6 ≤ OAT < 15 MaxFreqAsOATC MaxFreqAsOAT1H 15 ≤ OAT < 28 MaxFreqAsOAT2H 28≤ OAT No limit 12.1.3.2 Target Frequency Setting for DCI 72/80 The compressor Target Speed is calculated according to the following formula:...
- Page 55 CONTROL SYSTEM 12.1.5.2 Compressor starting control for DCI72/80 Step 1 Whenever the compressor starts up, after it has been off for more than 45 minutes, the compressor frequency cannot go below Step1RPS for 3 continuous minutes (this rule comes to ensure oil return to the compressor).
- Page 56 CONTROL SYSTEM OFAN Speed Compressor Routin Routin Routin Routin Target Frequency Freq=0 10 ≤ Freq < OFLowFreq OFLowFreq ≤ Freq< OFMedFreq Medium OFMedFreq≤ Freq High Medium When compressor is switched to OFF and the heat sink temperature is above 55 degrees, the outdoor fan will remain ON in low speed for up to 3 minutes.
- Page 57 CONTROL SYSTEM 12.1.9.2 EEV Control for DCI72/72Z/80 The target EEV value is the sum of open loop value (OL) and a result of the accumulative correction values (CV). ¦ The EEV intial value(OL) is defined as follow: = EEVBaseOpenLoop + EEVOpenLoopCpctyCrct + EEVTubeCompnst EEV tube Length Basic EEV open loop Open Loop correction...
- Page 58 CONTROL SYSTEM 12.3 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 AutoFan user setting, fan speed will be adjusted automatically according to the calculated NLOAD.
- Page 59 CONTROL SYSTEM 12.6 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.
- Page 60 CONTROL SYSTEM 12.7.2.2 Indoor Coil Overheating Protection For 72/80 ICT Trend <-2 -1,0,1 >2 ICT >62 60 ≤ ICT < 62 58≤ ICT <60 56≤ ICT < 58 54≤ ICT < 56 Norm Norm 52≤ ICT ≤ 54 Norm Norm Norm ICT <52 Norm...
- Page 61 CONTROL SYSTEM 12.7.3.2 Compressor Overheating Protection for DCI72/80 CTT Trend Fast Fast Decreasing Increasing Cool Heat Decreasing Change Increasing CTT >105 CTT >105 100≤ CTT < 100≤ CTT < 98≤CTT <100 95≤CTT <100 93≤CTT < 100 85≤CTT < 95 90≤CTT ≤ 93 80≤CTT ≤...
- Page 62 CONTROL SYSTEM 12.7.5.2 Heat Sink Overheating Protection For DCI72/80 Delta HST <-2 -1,0,1 >2 HST≥ 81 79 ≤ HST < 81 75 ≤ HST < 79 73≤ HST< 75 71 ≤ HST ≤ 73 Norm Norm Norm HST < 71 Norm 12.7.6 System Over Power Protection Only For DCI72/80...
- Page 63 CONTROL SYSTEM Deicing Operation Procedure ► O C T T h re s h o ld C O M P D e ic e F re q C h R V m a x. 1 2 m in u te s H E A T C O O L O F A N...
- Page 64 CONTROL SYSTEM Deicing Operation Procedure ► Threshold COMP max. 12 minutes HEAT COOL OFAN EEVDeicerOpen T1=50 secondes;T2=36 secondes;T3=6 secondes 12.7.8 Condensate Water Over Flow Protection Each of the pins P1, P2, P3 can have two options: 1 – When it is shorted with P4 0 –...
- Page 65 CONTROL SYSTEM Overflow when Overflow when unit is ON unit is OFF Overflow Water Level Normal OPER BLINK NLOAD is NLOAD forced to 0 PUMP 8 min 8 min 8 min 12.8 Indoor Unit Dry Contact Indoor unit Dry contact has two alternative functions that are selected by J9. Function Contact=open Contact=short...
- Page 66 CONTROL SYSTEM 12.10 On Unit Controls and Indicators 12.10.1 Indoor Unit controller Controls and Indicatiors for All Models Except for Floor/Ceiling model During OFF, Fan, Cool, Heat, Dry, and Auto modes (for operation in other modes, see at the relevant spec paragraph): 1.
- Page 67 CONTROL SYSTEM 12.11 Test Mode 12.11.1 Entering Test Mode System can enter Test mode in two ways: Automatically when the following conditions exists for 30 minutes continuously: Mode = Cool, Set point = 16, Room temperature = 27(+1/−2), Outdoor temperature = 35(+2/-1) Mode = Heat, Set point = 30, Room temperature = 20±1, Outdoor temperature = 7±(+1/-2) Manually when entering diagnostics with the following settings: Mode = Cool, Set point = 16...
- Page 68 CONTROL SYSTEM Model dependent parameters - DNG Unit (DNG50) (DNG60) (DNG72) (DNG80) Cap .Group NomLoadC NomLoadH ICTSTSpeed ICTVLSpeed ICTLSpeed ICTHSpeed ICTTSpeed MaxNLOADIF1C MaxNLOADIF2C MaxNLOADIF3C MaxNLOADIF4C MaxNLOADIF5C MinRTC MaxNLOADRTC MaxNLOADIF1H MaxNLOADIF2H MaxNLOADIF3H MaxNLOADIF4H MaxNLOADIF5H MaxNLOADRTH MaxRTH MaxNLOADPSC MaxNLOADPSH Model dependent parameters - WNG (WNG) Wall Mounted Models Parameter name NLOAD limits as a function of selected indoor fan speed...
- Page 69 CONTROL SYSTEM Model dependent parameters - PXD Unit (PXD50) (PXD60) (PXD72) (PXD80) Cap .Group NomLoadC NomLoadH MaxNLOADIF1C MaxNLOADIF2C MaxNLOADIF3C MaxNLOADIF4C MaxNLOADIF5C MinRTC MaxNLOADRTC MaxNLOADIF1H MaxNLOADIF2H MaxNLOADIF3H MaxNLOADIF4H MaxNLOADIF5H MaxNLOADRTH MaxRTH MaxNLOADPSC MaxNLOADPSH Service Manual - DNG DCI Revision Y07-02 12-17 CONTENT...
- Page 70 CONTROL SYSTEM 12.12.2 Outdoor Units SW Parameters: Model dependent parameters for DCI50/60 Name Single DCI-50 Single DCI 60 MinFreqC MaxFreqC MinFreqH MaxFreqH NormAccel NormDecel Step1Freq Step2Freq Step3Freq OFVL OFLOWC OFMEDC OFMAXC OFLOWH OFMEDH OFMAXH OFANTESTMODEC OFANTESTMODEH OFDelTestMode CTTOH1 CTTOH2 CTTOH3 CTTOH4 CCROC1 11.4...
- Page 71 CONTROL SYSTEM Model dependent parameters for DCI72Z Single Name DCI-72Z MinFreqC MaxFreqC MinFreqH MaxFreqH Step1Freq Step2Freq Step3Freq OFMinRPM OFMaxRPM NightRPM OFNNoiseMaxRPM CTTOH1 CTTOH2 CTTOH3 CTTOH4 CCROC1 12.5 CCROC2 13.3 CCROC3 14.1 CCROC4 14.9 ProtFreqLimit EEVMinOperOpenC EEVMaxOperOpenC EEVMinOperOpenH EEVMaxOperOpenH HeaterDisableFlag HST Enable OATLimitC OATLimit1H OATLimit2H...
- Page 72 CONTROL SYSTEM Model dependent parameters for DCI72/80 Compressor Parameters Value MinOFFTime MinOnTime MaxCTT1 MaxCTT2 MinSpeedAsCTT1 MinSpeedAsCTT2 MaxSpeedC MaxSpeedH Step1RPS Step2RPS Step3RPS NormAcc (sec/RPS) NormDec (sec/RPS) Down1(Sec/RPS) Down2 (Sec/RPS) DeiceAcc (Sec/RPS) DeiceDec (Sec/RPS) EEV Parameters Value NormEEVRate EEVCompOFFOpen EEVCompOFFTime EEVMaxOpen EEVMinOperOpenC EEVMaxOperOpenC EEVMinOperOpenH EEVMaxOperOpenH...
- Page 73 TROUBLESHOOTING TROUBLESHOOTING 13.1 Troubleshooting for DCI50/60/72Z 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 3 Min.
- Page 74 TROUBLESHOOTING Symptom Probable Cause Corrective Action Check RV power connections, if Unit works in wrong mode Electronics or power (cool instead of heat or check RV operation with direct connection to RV heat instead of cool) 230VAC power supply, if OK, replace outdoor controller.
- Page 75 TROUBLESHOOTING 13.1.3 Judgment by Indoor/Outdoor Unit Diagnostics Enter diagnostics mode - press for five seconds Mode button in any operation mode. Acknowledgment is by 3 short beeps and lights of COOL and HEAT LED’s. Then, every short pressing of Mode button will scroll between Indoor and Outdoor unit diagnostic modes by the acknowledgment of 3 short beeps and lighting of COOL and HEAT LED’s.
- Page 76 TROUBLESHOOTING 13.1.4.1 Indoor Unit Diagnostics and Corrective Actions Fault Probable Cause Corrective Action Sensor failures of Check sensor connections or all types replace sensor Indoor and Outdoor Communication controllers are with Replace Indoor controller mismatch different versions Communication or Check Indoor to Outdoor No Communication grounding wiring is not wiring and grounding...
- Page 77 TROUBLESHOOTING Fault Probable Cause Corrective Action Check the voltage - If there is no voltage between indoor fan replace main P.C.B terminals on the main P.C.B. The outdoor fan There is voltage between - Replace capacitor or motor. does not function outdoor fan terminals on correctly.
- Page 78 TROUBLESHOOTING Fault Probable Cause Corrective Action - Overload safety device on compressor is cut - Check for proper voltage, out (low voltage or high switch off power and try No cooling or temperature) again after one hour. heating takes place, indoor - Compressor run - Replace compressor and outdoor fans...
- Page 79 TROUBLESHOOTING 13.1.5 Outdoor Unit Diagnosits 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...
- Page 80 TROUBLESHOOTING 13.1.6 Judgment by MegaTool MegaTool is a special tool to monitor the system states. Using MegaTool requires: A computer with RS232C port. A connection wire for MegaTool. A special MegaTool software. Use MegaTool according to following procedure: 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.
- Page 81 TROUBLESHOOTING 13.1.8 Precaution, Advise and Notice Items 13.1.8.1 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.
- Page 82 TROUBLESHOOTING 13.2 Troubleshooting for DCI72/80 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 1 Min.
- Page 83 TROUBLESHOOTING Symptom Probable Cause Corrective Action Check the connections No power supply and the wiring on the main terminal - Repair if needed. Outdoor unit display board and leds are off PFC Chock coil Check the PFC Chock coil Burnt fuse Check 20A fuse on the Filter EEV problem Check EEV...
- Page 84 TROUBLESHOOTING Symptom Probable Cause Corrective Action Other home appliances operation is faulty such as noise appears EMC interference by in the television picture, or the Check for EMC problems the A/C unit picture is distorted or static occurs in the radio sound Specific problems of All others Check diagnostics...
- Page 85 TROUBLESHOOTING Problem OCT bad CTT bad HST bad OAT bad OMT bad RGT bad OFAN/Compressor Feedback Loss OFAN- IPM fault OFAN Lock OFAN- Vospd exceeded Compressor- IPM Fault Compressor Lock Compressor- Vospd exceeded Compressor- Foldback DC under voltage DC over voltage AC under voltage No communication A reserved...
- Page 86 TROUBLESHOOTING 13.2.3.2 Outdoor fault corrective actions Fault Name Probable Cause Corrective Action OCT bad CTT bad HST bad Thermistor not connected or Check Thermistor damaged OAT bad TSUC bad RGT bad OFAN halls or wires bad. OFAN/Compressor Check OFAN motor and Compressor wire cable bad or Feedback Loss compressor...
- Page 87 TROUBLESHOOTING Fault Name Probable Cause Corrective Action No communication A No signals in line A Check communication Compressor- Ilegal Exceeds speed low limit See # 13 Speed System Configuration Communication lines changed No problem just an Changed from last operation announcement Miss-match between the IDUs connected to port A,B,C or D,...
- Page 88 TROUBLESHOOTING 13.2.4 Fault Code for Indoor unit Pressing Mode button for long will activate diagnostic mode by the acknowledgment of 3 short beeps and lighting of COOL and HEAT LED’s. Entering diagnostics in STBY mode allows only viewing of status (fault-display). In diagnostic mode, system problems / information will be indicated by blinking of Heat &...
- Page 89 TROUBLESHOOTING 13.2.4.1 Indoor unit diagnostics and corrective actions Fault Probable Cause Corrective Action Sensors not connected or Check sensor connections Sensor failures damaged or replace sensor Communication Indoor and Outdoor controllers Replace Indoor controller mismatch are with different versions Communication or grounding Check Indoor to Outdoor No Communication wiring is not good...
- Page 90 TROUBLESHOOTING 13.2.5.4 Checking the Outdoor Fan Motor Check FAN-Power and FAN-Halls connections - Repair if needed. Rotate the fan slowly by hand. If the fan does not rotate easily, check whether something is obstructing the fan, or if the fan itself is coming into contact with the outer case, preventing it from rotating. Correct if necessary - otherwise, the fan motor bearings have seized.
- Page 91 TROUBLESHOOTING 13.2.5.10 Checking for electromagnetic interferance (EMC problems) EMC troubles to the A/C unit Locations most susceptible to noise : 1. Locations near broadcast stations where there are strong electromagnetic waves. 2. Locations near amateur radio (short wave) stations. 3. Locations near electronic sewing machines and arc-welding machines. Trouble : Either of the following trouble may occur: 1.
- Page 92 TROUBLESHOOTING 13.2.6.3 Advise: Open the Outdoor unit controller cover only after one minute from power off. Measure the electrolytic capacitors voltage before farther checking controller. 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, there are sharp fringes and sting on shell.