Airwell CN 9 Service Manual
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Airwell CN 9 Service Manual

Cn fixed rpm series
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CN Fixed RPM Series
REFRIGERANT
HEATPUMP
R410A
REV: 01
Oct 2008

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Summary of Contents for Airwell CN 9

  • Page 1 CN Fixed RPM Series REFRIGERANT HEATPUMP R410A REV: 01 Oct 2008...
  • 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 Table of Contents INTRODUCTION-----------------------------------------------------------------------------------------1-1 PRODUCT DATA SHEET----------------------------------------------------------------------------- 2-1 RATING CONDITIONS---------------------------------------------------------------------------------3-1 OUTLINE DIMENSIONS-------------------------------------------------------------------------------4-1 PERFORMANCE DATA---------------------------------------------------------------------------- ---5-1 PRESSURE CURVES----------------------------------------------------------------------------------6-1 SOUND LEVEL CHARACTERSTICS---------------------------------------------------------------7-1 ELECTRICAL DATA------------------------------------------------------------------------------------ 8-1 WIRING DIAGRAMS------------------------------------------------------------------------------------9-1 REFRIGERATION DIAGRAMS-------------------------------------------------------------------- -10-1 TUBING CONNECTIONS-------------------------------------------------------------------------- --11-1 CONTROL SYSTEM---------------------------------------------------------------------------------- 12-1 TROUBLESHOOTING--------------------------------------------------------------------------------13-1 EXPLODED VIEWS AND SPARE PARTS LISTS------------------------------------------- -14-1 APPENDIX A------------------------------------------------------------------------------------------- -15-1 Service Manual-CN Fixed RPM series...

  • Page 4: Introduction

    The CN Fixed RPM Cassette type split air conditioner has the same appearance and structure with CN DCI model. It comprise RC (heat pump) models, as follows: CN 9, CN 12, CN 18 Main Features The CN Fixed RPM series benefits from the most advanced technological innovations, namely:...

  • Page 5: Indoor Unit

    Introduction Indoor Unit The indoor unit is cassette type indoor unit, and can be easily fitted to many types of residential and commercials applications. It includes: Coil with hydrophilic aluminum fins. Motorized air flap (two step motors) Advanced electronic control box assembly Low sound level of the indoor fan Control The microprocessor indoor controller, and an infrared remote control, supplied as...
  • Page 6 Introduction Tubing Connections Flare type interconnecting tubing to be produced on site. For further details please refer to the Installation Manual, Chapter 10. Accessories Remote Control Panel 625x625 for gird ceiling Panel 725x725 for hard ceiling Inbox Documentation Each unit is supplied with its own installation manual, operation manual and Remote Controller operation manual.

  • Page 7: Product Data Sheet

    PRODUCT DATA SHEET PRODUCT DATA SHEET Model Indoor Unit CN-9 Model Outdoor Unit GCN-9 Installation Method of Pipe Flared Characteristics Cooling Heating Units Cooling Only 9380 9720 Btu/hr 9380 Capacity (4) 2.75 2.85 2.75 Power input (4) 0.81 0.81 0.74 EER (Cooling) or COP(Heating) (4) 3.40 3.40...
  • Page 8 PRODUCT DATA SHEET Model Indoor Unit CN-12 Model Outdoor Unit GCN-12 Installation Method of Pipe Flared Characteristics Cooling Heating Units Cooling Only Btu/hr 11090 11090 11940 Capacity (4) 3.25 3.25 3.50 Power input (4) 1.04 1.04 0.98 EER (Cooling) or COP(Heating) (4) 3.12 3.12 3.50...
  • Page 9 PRODUCT DATA SHEET Model Indoor Unit CN-18 Model Outdoor Unit ONG3-17 Installation Method of Pipe Flared Characteristics Cooling Heating Units Cooling Only Btu/hr 17400 17400 18420 Capacity (4) 5.10 5.10 5.40 Power input (4) 1.66 1.66 1.61 EER (Cooling) or COP(Heating) (4) 3.07 3.07 3.35...
  • Page 10 Product Data Sheet Optional accessory Panel 625x625(Optional accessory) For all the models Dimensions (H x L x D) 625x625x40 Weight Package Dimensions (H x L x D) 700x700x103 Package Weight Units per pallet units 20 Stacking height units 10 levels Panel 725x725(Optional accessory) For all the models Dimensions (H x L x D)

  • Page 11: Rating Conditions

    Rating Conditions RATING CONDITIONS Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). Cooling: Indoor: C DB 19 C WB Outdoor: 35 C DB Heating: Indoor: C DB Outdoor: 7 C DB C WB Operating Limits R410A Indoor Outdoor...

  • Page 12: Outline Dimensions

    Outline Dimensions OUTLINE DIMENSIONS 4.1 Indoor Unit: CN 9/12/18 Unit Main unit Insulation Front Step Front width Front height Effective Height Model CN 9/12 625/725 CN 18 625/725 Service Manual-CN Fixed RPM series...
  • Page 13 Outline Dimensions 4.2 Outdoor Unit: GCN 9/12 R410A 4.3 Outdoor Unit: ONG3-17 R410A Service Manual-CN Fixed RPM series...

  • Page 14: Performance Data

    Performance Data PERFORMANCE DATA CN 9/GCN 9 R410A 5.1.1 Cooling Capacity (kW) Entering Air Entering Air WB/DB ID Coil( Data DB OD Coil( 15/21 17/24 19/27 21/29 23/32 2.86 3.02 3.16 3.30 3.42 0.58 0.62 0.65 0.63 0.64 0.58 0.58 0.58...
  • Page 15 Performance Data 5.1.2 Heating Capacity (kW) ENTERING AIR DB ID COIL( ENTERING WB OD COIL( 1.45 0.57 1.39 0.60 1.34 0.64 1.56 0.58 1.50 0.61 1.45 0.65 1.65 0.59 1.60 0.62 1.54 0.66 2.01 0.62 1.93 0.66 1.84 0.70 2.84 0.66 2.75 0.71...
  • Page 16 Performance Data CN 12/GCN 12 R410A 5.2.1 Cooling Capacity (kW) Entering Air Entering Air WB/DB ID Coil( Data DB OD Coil( 15/21 17/24 19/27 21/29 23/32 3.32 3.51 3.67 3.84 3.97 0.89 0.94 0.99 0.97 0.99 0.75 0.75 0.75 0.75 0.75 3.28 3.48...
  • Page 17 Performance Data 5.2.2 Heating Capacity (kW) ENTERING AIR DB ID COIL( ENTERING WB OD COIL( 1.81 0.80 1.74 0.85 1.67 0.90 1.95 0.82 1.88 0.87 1.81 0.91 2.07 0.83 2.00 0.88 1.93 0.93 2.52 0.87 2.42 0.93 2.31 0.98 3.55 0.94 3.45 1.00...
  • Page 18 Performance Data CN 18/ONG3-17 R410A 5.3.1 Cooling Capacity (kW) Entering Air Entering Air WB/DB ID Coil( Data DB OD Coil( 15/21 17/24 19/27 21/29 23/32 5.25 5.56 5.82 6.08 6.28 1.50 1.59 1.67 1.64 1.66 1.18 1.18 1.18 1.19 1.19 5.20 5.51 5.77...
  • Page 19 Performance Data 5.3.2 Heating Capacity (kW) ENTERING AIR DB ID COIL( ENTERING WB OD COIL( 2.76 1.27 2.65 1.35 2.55 1.42 2.97 1.30 2.86 1.38 2.76 1.45 3.15 1.32 3.05 1.40 2.94 1.48 3.83 1.38 3.68 1.47 3.52 1.56 5.41 1.49 5.25 1.59...

  • Page 20: Pressure Curves

    Pressure Curves PRESSURE CURVES Model: CN9/GCN 9 R410A 6.1.1 Cooling Service Manual-CN Fixed RPM series...
  • Page 21 Pressure Curves 6.1.2 Heating Service Manual-CN Fixed RPM series...
  • Page 22 Pressure Curves Model: CN12/GCN 12 R410A 6.2.1 Cooling Service Manual-CN Fixed RPM series...
  • Page 23 Pressure Curves 6.2.2 Heating Service Manual-CN Fixed RPM series...
  • Page 24 Pressure Curves Model: CN18/ONG3-17 R410A 6.3.1 Cooling Service Manual-CN Fixed RPM series...
  • Page 25 Pressure Curves 6.3.2 Heating Service Manual-CN Fixed RPM series...

  • Page 26: Sound Level Characterstics

    Sound Level Characteristices SOUND LEVEL CHARACTERISTICS Indoor unit 7.1.1 Sound Pressure Level Figure 1 7.1.2 Soud Pressure Level Spectrum (Measured as Figure 1) FAN SPEED LINE Service Manual-CN Fixed RPM series...
  • Page 27 Sound Level Characteristices Service Manual-CN Fixed RPM series...
  • Page 28 Sound Level Characteristices Outdoor unit 7.2.1 Sound Pressure Level Figure 2 7.2.2 Soud Pressure Level Spectrum (Measured as Figure 2) Service Manual-CN Fixed RPM series...
  • Page 29 Sound Level Characteristices Service Manual-CN Fixed RPM series...

  • Page 30: Electrical Data

    Electrical Data ELECTRICAL DATA Option(When outdoor unit have the terminal L) NOTE Power wiring cord should comply with local laws and electrical regulations requirements. Service Manual-CN Fixed RPM series...

  • Page 31: Wiring Diagrams

    Wiring Diagrams WIRING DIAGRAMS Indoor Unit: CN 9/12/18 Service Manual-CN Fixed RPM series...
  • Page 32 Wiring Diagrams Outdoor Unit: GCN 9 R410A/GCN 12 R410A/ONG3-17 R410A Service Manual-CN Fixed RPM series...
  • Page 33 Wiring Diagrams Connections between indoor unit and outdoor unit Service Manual-CN Fixed RPM series...

  • Page 34: Refrigeration Diagrams

    Refrigeration Diagrams REFRIGERATION DIAGRAMS 10.1 Cooling Mode 10.2 Heating Mode 10-1 Service Manual-CN Fixed RPM series...

  • Page 35: Tubing Connections

    Tubing Connections TUBING CONNECTIONS 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. In case the indoor unit is installed above the outdoor, no trap is required.

  • Page 36: Control System

    CONTROL SYSTEM CONTROL SYSTEM 12.1 Electronic Control Introduction The electronic control information is designed for service application, and is common to the following groups of air-conditioners: ST/RC Group -Cooling only/ cooling and heating by heat pump SH Group -Cooling and heating by heat pump and supplementary heater.
  • Page 37 CONTROL SYSTEM Model selection Jumper - J8, J3, J4 and J5 MODEL J3J4J5 WNG 7/9/12/14 ALPHA EMD/ELD Reserved P2000 WMN4 APLPHA17 WNG 18/24 Water Source Heat Pump Jumper - J7 (Cf.:. Sect 7.1) Unit Type Normal Fix-RPM Water Source Heat Pump (WSHP) Note: 1.
  • Page 38 CONTROL SYSTEM 12.2 LEGEND 12.2.1 Abbreviations -Alternate Current - Air-Conditioner - ON or OFF status CLOCK - ON/OFF Operation Input, (dry contact) COMP - Compressor - Central Processing Unit ELUM - Extended Louver Upward Movement (Software Jumper) E²PROM, EEP - Erase Enable Programmable Read Only Memory - Heating Element - High Pressure Control - Hardware...
  • Page 39 CONTROL SYSTEM - Software TEMP - Temperature - Without -The difference between SPT and RT. In Heat Mode: T=SPT-RT In Cool/Dry/Fan Mode: T= RT –SPT 12.2.2 List of A/C Models Model Type Ceiling Mounted Wall Mounted Cassette 12.2.3 List of A/C Groups The following table defines the different A/C groups, and the applicable operation modes for each group.
  • Page 40 CONTROL SYSTEM 12.3 GENERAL FUNCTIONS FOR ALL MODELS 12.3.1 COMP operation For each Mode including POWER OFF & SB, a Min time delay of 3 min before COMP restarting, excluding DEICING Mode The Min operation time of COMP under different operating conditions is Min operation time of Operation Mode COMP...
  • Page 41 CONTROL SYSTEM 12.3.3 OFAN operation Min time interval between OFAN ON/OFF state change is 30 sec. In general, OFAN starts together with COMP. 12.3.4 HE operation Minimum Heaters ON or OFF time is 30 sec. Heaters can be activated only if IFAN is on. In RH group, HE-1 and HE-2 will be activated only when COMP is not operating, except in Dry Mode.
  • Page 42 CONTROL SYSTEM Cases for disabling thermistor short/disconnected detection 1. The detection of thermistor faults (a) and (b) above, are disabled when Deicer Protection is started. The detection will be enabled again only after (1) the deicing is completed, and (2) COMP has been restarted and operated for 30 sec. 2.

  • Page 43: Cooling Mode

    CONTROL SYSTEM Recover from the thermistor faults ICT/OCT/RAT is disconnected or shorted – The fault status will be cleared automatically when the connection is back to normal. ICT/OCT reading doesn’t change - The ICT no-change error is cleared automatically if a 3 c change in ICT is detected afterward.
  • Page 44 CONTROL SYSTEM 12.4.2 Cooling Mode: Cool, Auto (at Cooling) Temp: Selected desired temperature. Fan: HIGH, MED, LOW Timer: Any I Feel: On or Off Control function Maintains room temp at desired level by comparing RT and SPT. (RT - SPT) [ COMP OFAN USER FAN SPEED...
  • Page 45 CONTROL SYSTEM 12.4.3 Cooling with Autofan Mode: Cool, Auto (at cooling) Temp: Selected desired temperature Fan: Auto Timer: Any I Feel: On or Off Control function Maintains room temp at desired level and controls the IFAN speed for optimal comfort. (RT - SPT) [ COMP OFAN...

  • Page 46: Heating Mode

    CONTROL SYSTEM 12.5 HEATING MODE 12.5.1 Heating Mode – General In heating Mode, temp. compensation schedule will be activated for wall mounted, ducted models, and ceiling mounted (i.e. NKN, CN, and NFC) according to the following table: Add to SPT SPT [ I-FEEL ON I-FEEL OFF...
  • Page 47 CONTROL SYSTEM In RC and SH groups, whenever COMP & HE are both OFF, excluding protection modes, IFAN operation will be according to the following: In other models IFAN will operate in low speed for 30 sec and then stop. If COMP is OFF for more than 3 minutes and IFEEL Mode is inactive, IFAN will operate in low speed according to the following graph: IFAN (Low Speed)
  • Page 48 CONTROL SYSTEM 12.5.2 Heating, RC or SH Group Mode: Heat, Auto (at heating) Temp: Selected desired temperature Fan: HIGH, MED, LOW Timer: Any I Feel: On or Off Control function Maintains room temp. at desired level by comparing RAT or RCT to SPT. (RT - SPT) [ COMP (WVL)
  • Page 49 CONTROL SYSTEM 12.5.3 Heating, RC or SH Group with Autofan Mode: Heat, Auto (at heating) Temp: Selected desired temperature Fan: Auto Timer: Any I Feel: On or Off Control function Maintains room temp at desired level by controlling COMP, IFAN and OFAN. (RT - SPT) [ COMP IFAN...
  • Page 50 CONTROL SYSTEM Note: OFAN operation is controlled by the graph below when 1. (RAT SPT – 2 c), AND 2. (ICT c), AND 3. (COMP is ON) Otherwise, OFAN runs together with COMP. OCT [ OFAN 12-15 Service Manual-CN Fixed RPM series...
  • Page 51 CONTROL SYSTEM 12.6 AUTOMATIC COOLING OR HEATING 12.6.1 Automatic Cooling or Heating - General Switching-temperature between Cooling and Heating is SPT Autofan in Automatic Cooling and Heating Mode will activate “Cooling with Autofan Mode” and“Heating with Autofan Mode” respectively. When the Auto Mode is started with SPT +/-0 c, the unit will not select Auto Heat or Auto Cool mode immediately.
  • Page 52 CONTROL SYSTEM 12.6.2 Auto Cooling or Heating, RC or SH Groups Mode: Auto Temp: Selected desired temperature Fan: Timer: Any I Feel: On or Off Control function Maintains room temp at desired level by selecting between cooling and heating modes. (RT - SPT) [ Auto Heat Mode Auto Cool Mode...

  • Page 53: Dry Mode

    CONTROL SYSTEM 12.7 Dry Mode 12.7.1 Dry, ST or RC group Mode: Dry Temp: Selected desired temp Fan: Low (automatically selected by software) Timer: Any I FEEL: Any Control function Reduce room humidity with minimum temp. fluctuations by operating in Cool Mode with low speed IFAN.
  • Page 54 CONTROL SYSTEM 3. When Dry is changed from ON to OFF or vice versa, the limits mentioned in (1) & (2) are ignored. The COMP operation is only controlled by the 3 min Min OFF time and 1 min Min ON time. 4.
  • Page 55 CONTROL SYSTEM 12.7.2 Dry, SH Mode: Dry Temp: Selected desired temp. Fan: Low (automatically selected by software) Timer: Any I FEEL: Any Control function Reduce room humidity with minimum Temp. fluctuations by operating in Cool Mode with low speed IFAN and HE. (RT - SPT) [ Time [min] IFAN...
  • Page 56 CONTROL SYSTEM 12.8 Protection 12.8.1 Cooling Mode Protections Indoor Coil Defrost Mode: Cooling, Dry, Auto Temp: Selected desired temp. Fan: Timer: Any I Feel: On or Off Control Function Protect the indoor coil from ice formation at low ambient temperature. ICT [ OFAN COMP...
  • Page 57 CONTROL SYSTEM High Pressure Protection Mode: (Auto) Cooling or Dry Temp: Selected desired temp. Fan: Timer: I Feel: On or Off Control Function To protect the COMP from the high pressure built-up in the outdoor coil during normal cooling operation, by switching OFF the IFAN and COMP. O C T [ H P C 4 H P C 3...
  • Page 58 CONTROL SYSTEM Note: The ICT is also monitored during Cool and Dry mode, in case the RV control circuit is faulty. Whenever ICT reaches 70 c, which indicates a high pressure in the indoor coil, the COMP will be forced off automatically. The COMP can be turned on again only after the ICT is under 70 c again and after the 3 min COMP ON delay time.
  • Page 59 CONTROL SYSTEM 12.8.2 Heating Mode Protections Outdoor coil Deicing (excluding RH Group) Mode: Heating, Auto (at heating) Temp: Selected desired Temp Fan: Timer: Any I FEEL: Any Control function Protects the Outdoor coil from ice formation by controlling COMP & RV operation. Scope This new deicer is designed to operate at extreme temp conditions.
  • Page 60 CONTROL SYSTEM A. DEICER ACTIVATION ALGORITHM For WSHP DI = 20 (or 10) DT = 1 COMP to ON All others: DI = 40 (or 10) DT = 5 Activate DDt setting Routine Start counting TLD DTF = 0 OCT < DOC ? DDT and DTF information from Deicing Dynamic Threshold setting routine DTF=1...
  • Page 61 CONTROL SYSTEM Deicer Dynamic Threshold Setting Routine The following routine run continuously while A/C is working in Heat Mode. the routine outputs Deicing Dynamic Threshold (DDT) and Deicer Threshold Flag (DTF) to the main Deicer routine. 1st COMP start, OR deice complete Reset TLD cnt to 0 DTF = 0 IFAN/OFAN...
  • Page 62 CONTROL SYSTEM Deicing procedure OCT [ WSHP 15 Others 12 (DDT) 3 min 3 min max 12 min. COMP DI (note 1) DI (note 2) OFAN IFAN is forced to Low Speed IFAN HEs are forced ON IFAN Note 3 HEs are forced OFF OPER BLINK...
  • Page 63 CONTROL SYSTEM For WAX, the IFAN is simply forced OFF. 4. For SH group, HEs are forced ON and IFAN is forced to operate in Low speed, regardless of the ICT and difference between RAT & SPT. Definitions of Variables and Parameters Variable Definitions: Variable Details...

  • Page 64: Data

    CONTROL SYSTEM Deicer_Incremental_Time An unit change in the deicer time 10 min Speed_Change_Delay Delay from last IFAN speed 5 min change Definition of parameters in the EEPROM : Abv. EEP Addr Details Default Addr-1AH-NXXX 0-fH time from 0 to 30 minutes DImin Addr-18H-XXNN 00-ffH...
  • Page 65 CONTROL SYSTEM Outdoor coil Deicing (excluding RH Group) Mode: (Auto) Heating Fan: Timer: Any I Feel: On or Off Control Function Protect the Compressor from high pressure by switching OFF the OFAN and COMP. ICT [ COMP COMP is forced OFF OFAN is force OFAN OPER...
  • Page 66 CONTROL SYSTEM High Evaporating Protection Mode: Heating, Auto (at heating) Temp: Selected desired temp. Fan: Any Timer: I Feel: On or Off Unit: Enabled only in WSHP units type (Disabled for all other unit types). Control Function To protect the COMP from High Evaporating pressure built-up in the outdoor coil during normal heating operation, by switching OFF the COMP.
  • Page 67 CONTROL SYSTEM 12.8.3 Indoor Condensation Pump (ICP) Operation and Overflow Protection (NFC Model) Mode: Cooling, Dry, Auto (at Cooling) Temp: Desired temp selected Fan: Timer: Any I Feel: On or Off Control function: To prevent the overflow of condensed water by turning ON the ICP. Water Level LEVEL4 LEVEL2&3...
  • Page 68 CONTROL SYSTEM 12.8.4 Condensation Pump (CN/NKN models only) Mode: Cool, Dry, Auto Temp: Selected desired temperature Fan: Any Timer: I FEEL: Any Control function: Prevent Condensed water from Overflowing. Overflow when Overflow when unit is ON unit is OFF Overflow Water Level Normal OPER...
  • Page 69 CONTROL SYSTEM 12.9 Timer Mode: Any Temp. Selected desired temp Fan: Timer: Timer On, Timer Off I Feel: On or Off Control function 1. Starts or stops the unit operation after pre-set time. If RC-1 is used, the timer setting will be (0.5 - 24 Hr) from the moment the timer is set.

  • Page 70: Air Flow Direction Control

    CONTROL SYSTEM 12.10 I Feel Mode Mode: Any Temp: Selected desired Temp. Fan: Timer: On or Off I Feel: On Control function: Maintains room temp by comparing RAT to RCT sensor at the R/C. Depending on the version of the R/C (RC1, 2, 3 or 4), a R/C in IFEEL mode will automatically send out its RCT (in I-FEEL data) with a time interval from 0 to 6 minutes continuously.
  • Page 71 CONTROL SYSTEM Control airflow direction by setting the Horizontal or Vertical louvers to Auto-swing or User-position modes. According to the ELCON models, the louvers are driven by AC Swing Motor or DC Step Motor which operations are defined in Section 10.1 and 10.2 respectively. 12.11.1 AC-Swing Motor operation 1.General Operations of Louvers driven by AC-Swing Motor (i) The louvers, which are driven by AC-Swing motor, turn from right to left (move...
  • Page 72 CONTROL SYSTEM 12.11.2 DC Stepping-Motor operation Caution: All the louver angles or louver positions mentioned in this specification are the rotation angles of the stepping motors. They are NOT necessary equal to the rotation angles of the louvers. List of models with stepping motor and the Swing-angle limits of these models: Travel at Auto Swing, Limit in User LockAngle...
  • Page 73 CONTROL SYSTEM (v) The Louver is closed automatically when a unit is turned to SB or in the initialisation stage after a power failure. When the initialisation stage after the power failure is completed, the louver would stay at the closed position or resume the last louver operation (i.e. Auto-swing or User-position mode).
  • Page 74 CONTROL SYSTEM or Reset operating mode before the power failure. All the louver control information will be restored from the EEPROM. If the louver is stationary (not in Auto-swing), it will automatically go to the default position of the new mode. From mode to That is open to the Max position of the Auto_Swing_Limit.

  • Page 75: Alpha(

    CONTROL SYSTEM 3.Controlling the Louvers driven by DC Stepping Motor by using a Operation Autoswing and User-position modes Manual positioning These modes are activated by the Although there is no Manual Vertical swing button and Horizontal positioning button in the R/C for Operation swing button in the R/C.

  • Page 76: Forced Operation

    CONTROL SYSTEM 12.12 Forced operation Forced operation allows units to start, stop and operate in Cooling or Heating in pre-set temperature according to the following table: Forced operation mode Pre-set Temp for : NKN , CN, NFC, Cooling 22 C Heating 26 C Note:...
  • Page 77 CONTROL SYSTEM 12.13 SLEEP Mode: Any Temp: Set – desired temperature selected Fan: Timer: Interact with Sleep Timer as described in sect 12.2 I Feel: On or Off The Sleep mode is activated by using the sleep button on the R/C. In Sleep Mode, the unit will automatically adjust the SPT to turn up/down the room temperature (RT) gradually to provide maximum comfort to the user in sleep.
  • Page 78 CONTROL SYSTEM 12.13.2 Time adjustment in Sleep Mode In 10V6, the user can make use of the Off-Timer to extend the Sleep Time from 7 hours to 12 hour (max). The operation of the new “Extended Sleep Mode” is illustrated by the graphs below.
  • Page 79 CONTROL SYSTEM 12.14 Clogged Air filter Filter LED ON after 512 HR or as set in the EEPROM Addr-11H-XXXN. Filter LED is turned OFF, and the Filter Timer is restarted by pressing the reset button. 12-44 Service Manual-CN Fixed RPM series...
  • Page 80 CONTROL SYSTEM 12.15 ON UNIT INDICATORS AND CONTROLS Lights up during STBY mode. STAND BY Turns off during operaiton mode. INDICATOR The STBY LED blinks only in the following cases: Fault #1, #2, #4, #5, #8, and #9 The STBY LED will NEVER blink in the following cases: Fault 7, 11, and 12 (temp does not change).
  • Page 81 CONTROL SYSTEM 12.16 CLOCK RANDOM DELAY FROM 0 TO 2.5 SECONDS Clock Switch Open Clock Switch close The Clock is activate according to the following table: A/C STATE (before clock is CLOCK STATE CLOCK ACTION A/C NEW STATE changed) (before clock is (clock is changed) (after clock is changed)

  • Page 82: Reserved 0

    CONTROL SYSTEM 12.17 SYSTEM DIAGNOSTICS Pressing Mode button for 5-10 seconds in SB or any other operation mode will activate diagnostic mode by the acknowledgment of 3 short beeps and lighting of COOL and HEAT LEDs. In diagnostic mode, system problems will be indicated by blinking of Heat & Cool LEDs. The coding method will be as follow: Heat led will blink 5 times in 5 seconds, and then will be shut off for the next 5 seconds.

  • Page 83: Troubleshooting

    TROUBLESHOOTING TROUBLESHOOTING SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION Power supply indicator No power supply. Check power supply. If power (Red LED) does not light supply is OK, check display and display wiring, if OK, replace PCB. Unit does not respond to Remote control Check remote control remote control command.
  • Page 84 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION One of the protections is Control problem or Perform diagnostics to detect activated and compressor refrigeration system active protection, and take is stopped with no problem. action accordingly. apparent reason. Compressor motor is noisy Wrong phase order to Check compressor phase and no suction is present.

  • Page 85: Exploded Views And Spare Parts Lists

    EXPLODED VIEWS AND SPARE PARTS LISTS 14. EXPLODED VIEWS AND SPARE PARTS LISTS 14.1 EXPLODED VIEWS(CN 9/12/18) 14-1 Service Manual-CN Fixed RPM series...
  • Page 86 EXPLODED VIEWS AND SPARE PARTS LISTS 14-2 Service Manual-CN Fixed RPM series...
  • Page 87 EXPLODED VIEWS AND SPARE PARTS LISTS 14.2 EXPLODED VIEWS(GCN 9/12) 14-3 Service Manual-CN Fixed RPM series...
  • Page 88 EXPLODED VIEWS AND SPARE PARTS LISTS 14.3 EXPLODED VIEWS(ONG3-17) 14-4 Service Manual-CN Fixed RPM series...
  • Page 89 EXPLODED VIEWS AND SPARE PARTS LISTS 14.4 Spare part list of Intdoor Unit:CN 9&12 Airwell Part No. Name Quantity 453189500 Grille 453189900 Filter Assy. 453192700 Water-Level Switch 465720163 Front Plate Assy. 625x625 /CN Airwell 465720169 Front Plate Assy. 725x725 /CN Airwell 465080003 Display Cover 462350089 Evaporator welding Assy./CN 9/12 Fixed R410A...
  • Page 90 EXPLODED VIEWS AND SPARE PARTS LISTS 14.5 Spare part list of Intdoor Unit:CN 18 Airwell Part No. Name Quantity 453189500 Grille 453189900 Filter Assy. 453192700 Water-Level Switch 465720163 Front Plate Assy. 625x625 /CN Airwell 465720169 Front Plate Assy. 725x725 /CN Airwell 465080003 Display Cover 462350090 Evaporator welding Assy./CN 17 Fixed R410A...
  • Page 91 EXPLODED VIEWS AND SPARE PARTS LISTS 14.6 Spare part list of Outdoor Unit:GCN 9 R410A Airwell Part No. Name Quantity 4522551 Grille A of GCN 4523441 Front panel A Painting assy 464600053 Painting Base ASSY. 455000108 Double patch Capacitor for fan motor 2uF...
  • Page 92 EXPLODED VIEWS AND SPARE PARTS LISTS 14.7 Spare part list of Outdoor Unit:GCN 12 R410A Airwell Part No. Name Quantity 4522551 Grille A of GCN 4523441 Front panel A Painting assy 464600085 Base Plate Painting assy/GCN 12 R410A /Panisonic 455000108...
  • Page 93 EXPLODED VIEWS AND SPARE PARTS LISTS 14.8 Spare part list of Outdoor Unit: ONG3-17 R410A Part No. Name Quantity 433218 Front Panel A 433221 Air Inlet Ring-420 464860054 Painting Insulation Plate Assy/ONG 4519251 Axial Fan OD=400 4520171R Fan Motor (910rpm) 4527203 Motor Support 464600001 Base Plate Painting Assy.
  • Page 94 APPENDIX A APPENDIX A INSTALLATION AND OPERATION MANUAL 15-1 Service Manual-CN Fixed RPM series...

  • Page 95: Air Conditioner

    Installation manual AIR CONDITIONER CASSETTE English Indoor unit cassette type Part Number: 468050324/01...
  • Page 96 Indoor unit cassette type 10. REFRIGERANT TUBING....................17 11. PANEL INSTALLING....................19 12. SPECIAL SETTINGS....................22 FINAL TASKS .......................23...

  • Page 97: Safety Precautions

    Indoor unit cassette type 1. REQUIRED TOOLS FOR INSTALLATION WORK 2. SAFETY PRECAUTIONS Installation should be in accordance with local and national electrical and building fire safety regulations or codes. WARNING...
  • Page 98 Indoor unit cassette type Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire. 11) Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.
  • Page 99 Indoor unit cassette type 3. INSTALLATION/SERVICE TOOLS (Only for R410A product) CAUTION New Refrigerant Air Conditioner Installation THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER. R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because the working pressure of R410A refrigerant is approx.
  • Page 100 Indoor unit cassette type Connected to conventional vacuum pump. It is necessary to use an adapter to prevent vacuum pump oil from flowing back into the charge hose. The charge Vacuum pump hose connecting part has two ports -- one for adapter conventional refrigerant (7/16 UNF 20 threads per inch) and one for R410A.

  • Page 101: Optional Accessories

    Indoor unit cassette type Cable ties Securing wires in the indoor and outdoor unit Manual Remote control manual Operating manual Installation manual 5. OPTIONAL ACCESSORIES Name Used for Panel 625X625 Gird ceiling installation Hard ceiling installation Panel 725X725 Note: Decoration panel is separated from unit when packaging, select proper panel for different installation situation.
  • Page 102 Indoor unit cassette type Outdoor unit 1. The location must allow easy servicing and provide good air circulation as shown in fig 4. 2. The unit may be suspended from a wall by a bracket (Optional) or located in a free standing posi- tion on the floor (preferably slightly elevated).
  • Page 103 Indoor unit cassette type Fig.3 9000Btu/h 12000Btu/h 18000Btu/h Fig.4 Note: Fig. 4 No additional charge is required. Mounting pads (x4)

  • Page 104: Installation Of The Indoor Unit

    Indoor unit cassette type 7. INSTALLATION OF THE INDOOR UNIT Deciding ceiling opening size 1. Gird ceiling installation situation (60x60 standard ceiling): Because this unit is a mini-cassette, there is no need to make an opening cut on the ceiling, just remove one piece of ceiling panel.
  • Page 105 Indoor unit cassette type Caution Under this installation situation, Panel 725X725 is recommended; the maximum ceiling opening size is 680mm. Pay attention that there must be a overlapping between panel and ceiling. (Fig 6) Installing the indoor unit 1. Use installation template (supplied with the panel) when deciding the suspension bolt position.Fig.7 and table 1 show the dimensions relationship.
  • Page 106 Indoor unit cassette type The length of suspension bolts must be appropriate for a distance between the bottom of the bolt and the bottom of the unit of more than 15mm as shown in Fig.8 Supplied bolt Full-scale installation diagram Fig.8 (Supplied with the unit) In order to prevent a possible looseness, it is recommended to use 3 hexagonal nuts (Prepared...
  • Page 107 Indoor unit cassette type Duct installation Side openings are provided for installing separate ducts for outside air intake and treated air distribution to an adjacent room. 2. Use a punch to remove the knock-down openings on the casing. Use a knife to make the suitable opening on the polystyrene behind the casing.
  • Page 108 Indoor unit cassette type 8. CONDENSATE HOSE CONNECTION Drain hose connection 1. Use standard hard PVC pipe (19mm) for the drain pipe. 2. Use the drain hose (Accessory) to change the direction. Insert the drain hose until it connects the drain port very well, and then secure it tightly with the hose clamp(Accessory)( Fig.12) After checking the drainage, wrap the drain hose with the insulation and clamps (Accessory).
  • Page 109 Indoor unit cassette type Check the drainage After wiring and drain piping are completed, check the drainage according to the following procedure. If necessary, prepare a bucket and cloth to catch and wipe up the water spilled out. Connect the AC 220V~240V power to the terminal blocks (L, N terminals) inside the electrical box.
  • Page 110 Indoor unit cassette type 9. ELECTRICAL CONNECTION BETWEEN INDOOR AND OUTDOOR UNIT Electrical requirements Electrical wiring and connections should be made by qualified electricians and in accordance with local electrical codes and regulation. The air conditioner units must be grounded. The air conditioner unit must be connected to an adequate power outlet from a separate branch circuit protected by a time delay circuit breaker, as specified on unit's nameplate.

  • Page 111: Cooling Only

    Indoor unit cassette type Wiring procedures 1. Remove the three screws 2. Move the cover along the direction shown in the figure and then remove the cover Clamp Cable locker 1. Remove the two screws 2. Lift the cover towards you and then remove the cover For indoor unit power supply...

  • Page 112: Refrigerant Tubing

    Indoor unit cassette type 10. REFRIGERANT TUBING Connect the indoor to the outdoor unit The indoor unit contains a small quantity of nitrogen. Do not unscrew the nuts from the unit is supplied with sufficient refrigerant charge (R410A). Refer to outdoor unit nameplate. To prevent crushing, bend tubes using a bending tool.
  • Page 113 Indoor unit cassette type Do the vacuum of the refrigeration tubes and the indoor unit After connecting the unions of the indoor and outdoor units, purge the air from the tubes and indoor unit as follows: Connect the charging hoses with a push pin to the low side of the charging set and the service port of the suction valve.

  • Page 114: Panel Installing

    Indoor unit cassette type 11. PANEL INSTALLING Removing the grille: 1. To open the grille, rotate the grille lock counterclockwise from horizontal position to vertical position.(fig.22) Rotate about 90 Grille lock Fig.22 2. With the grille fully opened, remove the grille along the direction shown in Fig.23. Fig.23 Temporary installation of the panel Install two bolts (Accessory) onto the main unit (the corner of refrigerant tubing side and the...
  • Page 115 Indoor unit cassette type Refrigerant tubing corner Drain tubing corner (mm) Bolts Unit Bolts Fig.24 Attach the panel to the main unit, twist the panel to make sure that the two bolts mentioned above are screwed into the cavity on the panel. Thus the panel can keep balance with the two bolts.
  • Page 116 Indoor unit cassette type Display cable connector (12pin) Louver motor cable (5pin) 5pin connector from panel 12pin connector from panel 5pin connector from unit body 12pin connector from unit body Fig.25 Attaching the grille 1. To attach the grille, refer to the section removing the grille and follow the steps in reverse order.

  • Page 117: Special Settings

    Indoor unit cassette type 12. SPECIAL SETTINGS According to the installation height, the air flow compensation setting should follow below instruction: Floor Black PVC protecting pipe White Translucent PVC protecting pipe Orange White Black Blue Blue Indoor motor connecting wire assy. B Indoor motor connecting wire assy.

  • Page 118: Final Tasks

    Indoor unit cassette type 13. FINAL TASKS 1. Check all valve caps and ensure that they had been tightened properly. Close the valve cover. 2. Fill gaps on the wall between hole sides and tubing with sealer. 3. Attach wiring and tubing to the wall with clamps where necessary. 4.
  • Page 119 PROTECTION 468100326...
  • Page 120 upward and downward direction to spread the heating mode, the air conditioner’s the R410A & R407C WB[°C] DB[°C] WB[°C] DB[°C] DB[°C] WB[°C] DB[°C] WB[°C]...
  • Page 123 Dummy function(just for diagnostic test ) Lights up in red when the units is connected to power and ready to receive the remote control commands. Lights up in green during operations. Blinks when compressor is stopped as a result of a thermodynamic protection.
  • Page 126 Only a qualified service technician is allowed to perform the maintenance. When cleaning the filter, make sure the main power should be cut off. Or else fingers touching the electrical parts or rotating fan by mistake can lead to body injury. To remove the air filters, open the front panel by rotating the 2 locks counterclockwise from horizontal to vertical position, pull out the filters, and clean them by washing in warm soapy...

This manual is also suitable for:

Cn 12Cn 18Ong3-17 r410aGcn 9 r410aGcn 12 r410a

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