Airwell AWSI-HJD009/012-N11 Service Manual
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Airwell AWSI-HJD009/012-N11 Service Manual

Multi-tubing system with two connected indoor units
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YAZE218
Indoor Units
Outdoor Units
AWSI-HJD009/012-N11
AWSI-CNE009/012-N11
AWAU-YAZE218-H11
AWSI-SXE009/012-N11
AWSI-DLF009/012-N11
REFRIGERANT
HEAT PUMP
R410A
MAY-2013
SM YAZE218 1-A.2 GB
Version:1

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Summary of Contents for Airwell AWSI-HJD009/012-N11

  • Page 1 YAZE218 Indoor Units Outdoor Units AWSI-HJD009/012-N11 AWSI-CNE009/012-N11 AWAU-YAZE218-H11 AWSI-SXE009/012-N11 AWSI-DLF009/012-N11 REFRIGERANT HEAT PUMP R410A MAY-2013 SM YAZE218 1-A.2 GB Version:1...

  • Page 2: 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 ........................5-1 6. OPERATING CURVES ........................6-1 7. ELECTRICAL DATA ........................7-1 8. WIRING DIAGRAM ......................... 8-1 9.

  • Page 3: Introduction

    1—INTRODUCTION INTRODUCTION 1.1 General The YAZE218 is a multi-tubing system with two connected indoor units. The multi-split inverter is a high-level technology product for residential and commercial application offering comfort, low noise operation and energy saving. 1.2 Main Features 1.2.1 High Technology ●...

  • Page 4: Indoor Unit Combinations

    1—INTRODUCTION 1.5 Matching Table INDOOR UNITS AWSI-HJD009-N11 AWSI-HJD012-N11 AWSI-CNE009-N11 AWSI-CNE012-N11 AWSI-SXE009-N11 AWSI-SXE012-N11 AWSI-DLF009-N11 AWSI-DLF012-N11 1.6 Indoor Unit combinations YAZE218 Unit A Unit B Code Sum Nominal Indoor Units Combination SM YUDE 1-A.1 GB | 1—2...

  • Page 5: Product Data Sheet

    2—PRODUCT DATA SHEET PRODUCT DATA SHEET 2.1 Outdoor YAZE218 Speci cations Model Indoor Unit Model Outdoor Unit YAZE218 Installation Method of Pipe Flared Btu/hr 17050(4090~21840) 20480(3410~23200) Capacity (4) 5.0(1.2-6.4) 6.0(1.0-6.8) n i l Energy ef Power supply Power factor See DCI Single Refrigerant control &...
  • Page 6 2—PRODUCT DATA SHEET 2.2 Indoor Units Data 2.2.1 AWSI-HJD009-N11 AWSI-HJD009-N11 Model Indoor Unit l l a & y t i ow x 1 c i t Sound power level (2) H/M/L dB(A) 51/ 47 /39 Sound pressure level(3) H/M/L dB(A) 39/ 34 /26 Dimensions WxHxD...
  • Page 7 2—PRODUCT DATA SHEET 2.2.3 AWSI-CNE009-N11 AWSI-CNE009-N11 Model Indoor Unit l l a & y t i i r t c i t Dimensions WxHxD 575X575X219(625X625X40/725X725X40) Package dimensions WxHxD 681X681X297(700X700X103/800X800X103) s t i t e l s t i s t i 2.2.4 AWSI-CNE012-N11 Model Indoor Unit...
  • Page 8 2—PRODUCT DATA SHEET 2.2.5 AWSI-SXE009-N11 Model Indoor Unit AWSI-SXE009-N11 l l a & y t i Fan speeds H/M/L 760/670/500 c i t Sound power level (2) H/M/L dB(A) 54/49/41 Sound pressure level(3) H/M/L dB(A) 42/37/29 Dimensions WxHxD 820x630x190 Package dimensions WxHxD 920x726x273 s t i...
  • Page 9 2—PRODUCT DATA SHEET 2.2.7 AWSI-DLF09 DCI Model Indoor Unit AWSI-DLF09-DCI l l a & y t i Fan speeds H/M/L 920/810/740 Air ow (1) H/M/L m3/hr 620/560/490 c i t Sound power level (2) H/M/L dB(A) 50/47/44 Sound pressure level(3) H/M/L dB(A) 29/26/23...

  • Page 10: Rating Conditions

    3—RATING CONDITIONS RATING CONDITIONS Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). Cooling: Indoor: 27°C DB 19°C WB Outdoor: 35°C DB Heating: Indoor: 20°C DB Outdoor: 7°C DB 6°C WB 3.1 Operating Limits Indoor Outdoor °C °C °C...

  • Page 11: Outline Dimensions

    4—OUTLINE DIMENSIONS OUTLINE DIMENSIONS 4.1 Indoor Unit: HJD009/012 4—1 | SM YAZE218 1-A.2 GB...
  • Page 12 4—OUTLINE DIMENSIONS 4.2 Indoor Unit: CNE009/012 Effective Unit Main unit Insulation Front Step Front width Front height Height Model 25/35 625/725 SM YAZE218 1-A.2 GB | 4—2...
  • Page 13 4—OUTLINE DIMENSIONS 4.3 Indoor Unit: SXE009/012 4.4 OUTDOOR UNIT : YAZE218 4—3 | SM YAZE218 1-A.2 GB...

  • Page 14: Performance Data

    5—PERFORMANCE DATA PERFORMANCE DATA 5.1 Outdoor Unit YAZE218 DCI Combinations 5.1.1 Cooling operating y t i Energy Indoor Ef ciency Nominal Nom. Min. Max. Nom. Min. Max. model Class 2500 2500 1200 3600 1000 3.57 3500 3500 1200 4300 1000 1200 3.50 2500...
  • Page 15 5—PERFORMANCE DATA 5.2 HJD009 5.2.1 Cooling Capacity Factors - Unit A,B 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB/WB TEMPERATURE [ºC] OD COIL ENTERING AIR DB DATA 22/15 24/17 27/19 29/21 32/23 TEMPERATURE [ºC] -10 - 20 (protection range) 0.97 1.03...
  • Page 16 5—PERFORMANCE DATA 5.2.3 Heating Capacity Factors - Unit A,B 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB TEMPERATURE [ºC] OD COIL ENTERING AIR DB/WB DATA TEMPERATURE [ºC] 0.64 0.59 0.55 -15/-16 0.60 0.66 0.72 0.71 0.66 0.62 -10/-12 0.72...
  • Page 17 5—PERFORMANCE DATA 5.3 HJD012 5.3.1 Cooling Capacity Factors - Unit A,B 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB/WB TEMPERATURE [ºC] OD COIL ENTERING AIR DB TEMPERATURE DATA 22/15 24/17 27/19 29/21 32/23 [ºC] -10 - 20 (protection range) 0.97 1.03...
  • Page 18 5—PERFORMANCE DATA 5.3.3 Heating Capacity Factors - Unit A,B 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB TEMPERATURE [ºC] OD COILENTERING AIR DB/WB TEMPERATURE DATA [ºC] 0.64 0.59 0.55 -15/-16 0.60 0.66 0.72 0.71 0.66 0.62 -10/-12 0.72 0.78...
  • Page 19 5—PERFORMANCE DATA 5.4 CNE009 5.4.1 Cooling Capacity Factors - Unit A,B 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB/WB TEMPERATURE [ºC] OD COIL ENTERING AIR DB TEMPERATURE DATA 22/15 24/17 27/19 29/21 32/23 [ºC] -10 - 20 (protection range) 0.97 1.03 1.09...
  • Page 20 5—PERFORMANCE DATA 5.4.3 Heating Capacity Factors - Unit A,B 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB TEMPERATURE [ºC] OD COIL ENTERING AIR DB/WB TEMPERATURE DATA [ºC] 0.64 0.59 0.55 -15/-16 0.60 0.66 0.72 0.71 0.66 0.62 -10/-12 0.72...
  • Page 21 5—PERFORMANCE DATA 5.5 CNE012 5.5.1 Cooling Capacity Factors - Unit A,B 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB/WB TEMPERATURE [ºC] OD COIL ENTERING AIR DB DATA 22/15 24/17 27/19 29/21 32/23 TEMPERATURE [ºC] -10 - 20 (protection range) 0.97 1.03 1.09...
  • Page 22 5—PERFORMANCE DATA 5.5.3 Heating Capacity Factors - Unit A,B 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB TEMPERATURE [ºC] OD COIL ENTERING AIR DB/WB TEMPERATURE DATA [ºC] 0.64 0.59 0.55 -15/-16 0.60 0.66 0.72 0.71 0.66 0.62 -10/-12 0.72...
  • Page 23 5—PERFORMANCE DATA 5.6 Tubing Length Capacity Correction Factor 5.6.1 Cooling 5.6.2 Heating 5—10 | SM YAZE218 1-A.2 GB...

  • Page 24: Operating Curves

    6—OPERATING CURVES OPERATING CURVES 6.1 Model: YAZE218 DCI 6.1.1 Cooling – Technician Mode SM YAZE218 1-A.2 GB | 6—1...
  • Page 25 6—OPERATING CURVES 6.1.2 Heating – Technician Mode 6—2 | SM YAZE218 1-A.2 GB...
  • Page 26 6—OPERATING CURVES 6.1.3 Tubing Length correction Factor SM YAZE218 1-A.2 GB | 6—3...

  • Page 27: Electrical Data

    7—ELECTRICAL DATA ELECTRICAL DATA c r i t i u Interconnecting cable no. x cross section 4 X 1.5 mm (For each IDU) Note: ● Inrush current is the current when power is up. (charging the DC capacitors at outdoor unit controller). ●...

  • Page 28: Wiring Diagram

    8—WIRING DIAGRAMS WIRING DIAGRAMS 8.1 YAZE218 Wiring Diagrams SM YAZE218 1-A.2 GB | 8—1...

  • Page 29: Refrigeration Diagram

    8—WIRING DIAGRAMS REFRIGERATION DIAGRAMS 9.1 YAZE218 Cooling Mode 9—1 | SM YAZE218 1-A.2 GB...
  • Page 30 8—WIRING DIAGRAMS 9.2 YAZE218 Heating Mode SM YAZE218 1-A.2 GB | 9—2...

  • Page 31: Tubing Connections

    10—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. 10—1 | SM YAZE218 1-A.2 GB...

  • Page 32: Control System

    11—CONTROL SYSTEM CONTROL SYSTEM 11.1 Abbreviations nition Air Condition Building Management System System Power Compressor Top Temperature sensor DC Inverter Electronic Expansion Valve Heating Element Human Machine Interface Heat Sink Temperature sensor Hertz (1/sec) – electrical frequency Indoor Coil Temperature (RT2) sensor Indoor Unit Micro Controller Unit Outdoor Air Temperature sensor...

  • Page 33: Temperature Sensors

    11—CONTROL SYSTEM 11.2.6 Temperature Sensors CTT – Compressor Top Temperature OAT – Outdoor Air Temperature OMT– Outdoor middle coil temperature OCT – Outdoor Coil (heat exchanger) Temperature HST – Heat Sink Temperature RGT1..4 – Indoor Unit 1..4 Returned Gas Temperatures RLT 1..4 –...
  • Page 34 11—CONTROL SYSTEM For Model Q (YBDE018/YAZE218) Total Detected IDU Code (Sum of IDU code) Detected IDU units Minimum Allowed Maximum Allowed Whenever the sum of the IDU code is outside the range the unit will be forced to Idle Mode and report: “Mismatch between IDU and ODU models”.
  • Page 35 11—CONTROL SYSTEM 11.3.2.2 ‘Bad Communication’ fault The system keeps a balance of a good/bad communication packet ratio for each active communication channel. When the ratio getting high , system enters ‘Bad Communication’ fault. 11.3.2.3 ‘No Communication’ fault If no legal transmission or no message received for 30 seconds, system enters ‘No Communication’...

  • Page 36: Indoor Unit Control

    11—CONTROL SYSTEM 11.4 Indoor Unit Control 11.4.1 Indoor Fan Control 10 Indoor fan speeds are determined for each model. 5 speeds for each mode cool/dry/fan or heat. When user sets the indoor fan speed to a xed speed (Low/ Medium/ High), unit will operate constantly at set speed.

  • Page 37: Dry Mode

    11—CONTROL SYSTEM 11.4.3.2 Indoor Fan Control in Heat Mode Indoor fan speed depends on the indoor coil temperature: 11.4.4 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 <...
  • Page 38 11—CONTROL SYSTEM 11.4.9 On Unit Controls and Indicators 11.4.9.1 All Models Except for Floor/Ceiling model Lights up when the Air Conditioner is connected to power and STAND BY INDICATOR ready to receive the R/C commands Lights up during operation. Blinks for 300 msec to announce that a R/C infrared signal has OPERATION INDICATOR been received and stored.
  • Page 39 11—CONTROL SYSTEM 11.4.9.2 Floor/Ceiling Model Lights up when the Air Conditioner is connected to power and is STANDBY INDICATOR ready for operation 1. Lights up during operation. 2. Blinks for 300 msec to announce that a R/C infrared signal has OPERATE INDICATOR been received and stored.

  • Page 40: Mode Setting

    11—CONTROL SYSTEM 11.5 Run Mode Run mode is the default operation mode of the system. This is the standard operation mode that is active in eld application (at customer site). System can go from run mode to other operation modes through keyboard or serial ports. 11.5.1 Mode Setting Mode de nes the ODU operation mode.
  • Page 41 11—CONTROL SYSTEM 11.5.2.2 Compressor Speed calculation During normal operation (excluding protections), the compressor speed is limited by the following table: Min Speed Max Speed Min Speed Max Speed Cool Cool Heat Heat (check) 11.5.2.3 Indoor Units NLOAD calculation The NLOAD setting is done by the indoor unit controller, based on a PI control 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.
  • Page 42 11—CONTROL SYSTEM 11.5.2.4 Outdoor Unit NLOAD calculation Compressor speed will be set between the minimum speed and the max speed according to the ODU NLOAD 11.5.2.5 Speed Step Limitations 11.5.2.5.1 Step 1 and step 2 The compressor speed cannot go below Step1Freq or above Step2Freq during 3 continuous minutes once after the compressor starts up when the ODU unit changes from STBY 11.5.2.5.2 Step 3 limit...

  • Page 43: Eev Control

    11—CONTROL SYSTEM 11.5.3 EEV Control 11.5.3.1 Operation Range The EEV operation range is de ned according to the operation mode as following ODU Mode Normal operation IDU inactive Compressor off COOL 50 to 480 HEAT 50 to 480 50 to 120 11.5.3.2 Reaching target value rules For all cases except at EEV initialization procedure, each EEV can move no more than 20 steps at a time.

  • Page 44: Outdoor Fan Speed Control

    11—CONTROL SYSTEM 11.5.3.8 Accumulative correction value storage For each combination of active IDUs, the accumulated EEV correction value (for each IDU) will be stored in the memory. Default correction values after power up are zero. 11.5.4 Outdoor Fan Speed Control The OFAN operation keeps the outdoor heat exchanger temperature within a prede ned values by increasing or reducing the OFAN speed.
  • Page 45 11—CONTROL SYSTEM 11.5.7 Thermodynamic Protections Protection level de nition Five protection levels are de ned: Normal – No protection status is ON. Stop-Rise (SR) – System is in protection, rst level D1 - System is in protection, second level D2 - System is in protection third level Stop-Compressor (SC) –...
  • Page 46 11—CONTROL SYSTEM 11.5.10 ODU Protections There are 3 ODU protections: ● Compressor overheating ● Heat sink overheating ● System over power Operation logic of all protections is the same. The controlled input (CTT, HST, or PWR) is controlled by changing the protection level using the fuzzy logic algorithm according the input level and the change rate.
  • Page 47 11—CONTROL SYSTEM 11.5.11.2 Deicing Protection Procedure 11.5.11.3 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 11.5.11.4 3 Levels Logic (used in oor/ceiling models) Level L2&3...
  • Page 48 11—CONTROL SYSTEM 11.5.11.5 1 Level Logic (used in all models except for oor/ceiling models) Level Don’t care Normal Don’t care Over ow SM YAZE218 1-A.2 GB | 11—17...
  • Page 49 11—CONTROL SYSTEM 11.6 Installation Test Mode 11.6.1 Test Objectives ● Find tube-communication wires mismatch. ● Instruct the technician to match the tubes to the communication wires. ● Find EEV or tubing problems. 11.6.2 Test Concept ● The unit will open each EEV separately in cooling mode. ●...
  • Page 50 11—CONTROL SYSTEM 4. During the test, the unit will show count down counter (in minutes). The test maximum time is 20 minutes. 5. When the test is nished, the system will show the test result, pass or fail. 6. You can scroll the menu to observe: a.
  • Page 51 11—CONTROL SYSTEM 11.6.6 Faults during the test Upon the following, the system will terminate installation test: ‘OAT’ blink Outdoor ambient temperature is too clod, cannot run installation test. The selected number of the installed indoor units by the technician ‘IDU’ blink does not match the number of indoor units detected by the system.
  • Page 52 11—CONTROL SYSTEM 11.6.7 Matrix Table Test Result (tbl) & Problem Correction (Crt) The technician has to use labels on the indoor wires connected to the outdoor On unit Label x=Wire name (Marked by technician) For non connected indoor units, there is no need for label. The result is presented in the following way: Present for 2 sec Present for 2 Sec.
  • Page 53 11—CONTROL SYSTEM Examples: Problem Correction (Crt) Technician Interpretation Technician Interpretation Display Display 2--:Cb Keep wire 2 on communication channel C 1--:CA Keep wire 1 inside communication channel C 3--:Cc Keep Wire 3 on communication channel C 2--:Cb Keep wire 2 inside communication channel C 1--:Cd Move wire 1 to communication channel C 3--:Cc...
  • Page 54 11—CONTROL SYSTEM 11.6.8 Matrix Table Test Result (tbl) IDU channels on the DMSMP Channel4 Channel1 (j=1) Channel2 (j=2) Channel3 (j=3) (j=4) EEV1 (i=1) =T/F/N/C =T/F/N/C =T/F/N/C =T/F/N/C EEV2 (i=2) =T/F/N/C =T/F/N/C =T/F/N/C =T/F/N/C channe- ls on the EEV3 (i=3) =T/F/N/C =T/F/N/C =T/F/N/C =T/F/N/C...
  • Page 55 11—CONTROL SYSTEM 11.7 Technician Test Mode This test is aimed for the technicians to check the system under a preset compressor and outdoor fan values while the expansion valves will function according to the normal running mode. 11.7.1 Entering technician mode o This mode is entered through the outdoor unit using the HMI (refer to user interface section).

  • Page 56: User Interface

    11—CONTROL SYSTEM 11.8 User Interface 11.8.1 User interface description o The user interface uses three 7 segments, and 4 keys. o Keys, The 4 keys are: — Scroll - used to scroll between options (up and down) — Select - use to select an option —...
  • Page 57 11—CONTROL SYSTEM 11.8.3 Menus 11.8.3.1 Main Menu Notes: 1. The default presentation will be alternating repeatedly among the following for single and multi split units: o the mode of the unit (Cl/Ht/Sb) shown for 2 sec. o (‘id’ + the number of communicative IDUs number) shown for 2 sec. o Active fault (among ODU or IDUs), each to be shown for 2 sec.
  • Page 58 11—CONTROL SYSTEM o Maximum 5 faults are presented for each unit (each IDUs/ODU). When no faults “-- “ sign will be shown. o The active faults have higher priority for presentation than non active ones. o Non active faults are presented according to their chronological order, starting from the latest one.
  • Page 59 11—CONTROL SYSTEM 11.8.3.2 Status (Sub Menu) IDU (IDU) ╚════════ICT (ICT) ╚════════════╦══ICT1 (A) ╠══ICT2 (B) ╠══ICT3 (C) ╚══ICT4 (D) Operation Mode (Opr) ╚════════════╦══Operation Mode 1 (A) ╠══Operation Mode 2 (B) ╠══Operation Mode 3 (C) ╚══Operation Mode 4 (D) NLOAD (Ld) ╚════════════╦══NLOAD 1 (A) ╠══NLOAD 2 (B) ╠══NLOAD 3 (C) ╚══NLOAD 4 (D)

  • Page 60: Jumper Settings

    11—CONTROL SYSTEM Notes: o For the temperature display, when a thermistor is shorted, disconnected show FLT, when it’s disabled show DIS. o It is possible to present a number between 999 and 99,999 by alternating between two numbers (each number is presented for 1 second). The two numbers format is (off)xx, yyy.
  • Page 61 11—CONTROL SYSTEM 11.10 System Parameters 11.10.1 General parameters Default Default Name Units Name Units Value Value MinOFFTime minute DEICT2 second MinONTime minute DEICT3 second HzUp_CTTOH 2 / 60 /8 Hz / Sec/NA DSTF °C HzDown1_CTTOH -2 / 60 /5 Hz / Sec/NA OMTOH0 °C HzDown2_CTTOH...
  • Page 62 11—CONTROL SYSTEM 11.10.2 ODU Model Dependent Parameters Name Q YAZ218 Unit Name Q YAZ218 Unit MinFreqC OCTExitDeicer °C MinFreqCA MaxDeicerTime Minute MaxFreqCSingle EEVDecierOpenSingle Step MaxFreqCMulti EEVDecierOpenMulti Step MinFreqH DeicerCoef MinFreqHA EEV_Active_H_Isotherm °C MaxFreqHSingle EEV_Active_H_SC °C MaxFreqHMulti °C EEV_Active_H_SC_Crct °C HPAtMinFreqC EnableExceedCond HPAtMinFreqCA °C...
  • Page 63 11—CONTROL SYSTEM Name Q YAZ218 Unit Name Q YAZ218 Unit 102. EEV_OL_Beta3_S_C -2.734 131. EEV_OL_ Gamma _M3_C 103. EEV_OL_ Gamma3 _S_C 1.714 132. EEV_OL_Delta _M3_C 104. EEV_OL_Delta3 _S_C 133. EEV_OL_Alpha_M4_C 105. EEV_OL_Alpha1_S_H 134. EEV_OL_Beta_M4_C 106. EEV_OL_Beta1_S_H 3.308 135. EEV_OL_ Gamma _M4_C 107.
  • Page 64 11—CONTROL SYSTEM 11.10.3 Indoor Units SW Parameters 11.10.3.1 General Parameters for All Models: Parameters de ning the indoor fan speed as a function of Indoor Coil temperature in heat mode (ICT): ICTVLSpeed ICT to go down to very low speed ICTHSpeed ICT to start in increase speed from very low ICTTSpeed...

  • Page 65: Troubleshooting

    12—TROUBLESHOOTING 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 1 Min. to discharge the system. Touching the controller before discharging may cause an electrical shock!!! For safe handling of the controller, please refer to section 12.5 below.
  • Page 66 12—TROUBLESHOOTING SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION - Repair if needed PFC Chock coil Check the PFC Chock coil Burnt fuse Check 20A fuse on the Filter (12.4.2) EEV problem Check EEV (12.4.5) Refrigerant leakage Check refrigeration system (12.2) Compressor operates but one or more units generates no capacity Indoor coil block Clean lters and/or remove block...
  • Page 67 12—TROUBLESHOOTING 12.3 Diagnostics 12.3.1 Fault Code for Outdoor unit The last fault occurred in the system will be stored in the EEPROM. If no fault exist in the system, no fault code will be displayed during normal operation mode. For single Split units only, when system enters diagnostics mode (through IDU communication), the last fault code will be displayed even if the system has recover from that fault.
  • Page 68 12—TROUBLESHOOTING 12.3.2 Outdoor unit diagnostics and corrective actions OCT bad CTT bad HST bad OAT bad Thermistor not connected or damaged Check Thermistor (12.4.6) OMT bad RGT bad RLT bad Disconnect the compressor plug and measure between U-V, U-W for PM module detect shoot-through resistance using multimeter.
  • Page 69 12—TROUBLESHOOTING Check that the air ow around the ODU Compressor stopped due to heatsink 20 Heat sink Over Heating is free and the fan is running free. Check protection fan motor 21 Deicing During deicing procedure No action required Compressor stopped due to over heat 22 Compressor Over Heating Check if gas is missing in the system protection...
  • Page 70 12—TROUBLESHOOTING 12.3.3 DMSMP diagnostics The DMSMP system has 4 IDU LEDs, 1 ODU LED, and 1 Power LED. Each communication channel is built up from receiving and transmitting channels. The outdoor controller is the master of communication (always initiated communication) while the DMSMP and indoor are slave (responds only when it receives).
  • Page 71 12—TROUBLESHOOTING 12.3.4 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. When Indoor diagnostics is displayed, all four LED’s (STBY, Operate, Filter, TMR) are on. Entering diagnostics in STBY mode allows only viewing of status (fault-display).
  • Page 72 12—TROUBLESHOOTING 12.3.5 Indoor unit diagnostics and corrective actions Fault Probable Cause Corrective Action Sensors not connected or Check sensor connections or Sensor failures damaged replace sensor Communication Indoor and Outdoor controllers are Replace Indoor controller mismatch with different versions Communication or grounding Check Indoor to Outdoor wiring No Communication wiring is not good...
  • Page 73 12—TROUBLESHOOTING 12.4.4 Checking the Reverse Valve (RV) The RV has two parts, Solenoid and valve. Solenoid - Running in heating mode, check the voltage between two pins of reverse valve connector, normal voltage is 230VAC. if no power supply to RV, Check RV operation with direct 230VAC power supply, if OK, replace outdoor controller.
  • Page 74 12—TROUBLESHOOTING 12.4.8.2 EMC troubles to near by home appliances Locations most susceptible to noise: 1. A television or radio is located near the A/C and A/C wiring. 2. The antenna cable for a television or radio is located close to the A/C and A/C wiring. 3.

  • Page 75: Exploded View And Spare Part List

    13—EXPLODED VIEWS AND SPARE PART LISTS EXPLODED VIEW AND SPARE PART LIST 13.1 Multi YAZE218 – Exploded View 13—1 | SM YAZE218 1-A.2 GB...
  • Page 76 13—EXPLODED VIEWS AND SPARE PART LISTS 13.2 Multi YAZ218 DCI – Spare Part List G464250118 Fireproo t i t ” 4 ” 8 / . y p i l G467400056 OCT Outdoor Coil Temperature Sensor/10K/Copper-capsulation Ø6 G467400040 Condenser Middle Temperature Sensor/OAT & OMT/DCR LC 25/35 G467400200 CTT Compressor Top Temperature Sensor/10K/Resin-capsulation G467400082...

  • Page 77: Appendix A

    14—APPENDIX A 14. APPENDIX A INSTALLATION AND OPERATION MANUAL 14—1 | SM YAZE218 1-A.2 GB...
  • Page 78 SERVICE MANUAL YAZE218...

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