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Haier AD18LS1ERA Service Manual

Multi upgrade series commercial air conditioner
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Commercial Air Conditioning
MULTI upgrade series
DC inverter technology, high energy efficiency, higher EER A+, energy
saving for the user
Universal indoor units for multi upgrade series, Unitary smart DC inverter
and HAIER DAC split inverter type
High voltage communication, convenient wiring work
Multiple control types
10℃ constant temperature control
Universal power supply for 50Hz and 60Hz
Central control function available
New friendly refrigerant R410a, zero ODP, environment protection
Manual code: SYJS-017-10REV.0

SERVICE MANUAL

Models
Indoor: AB09CS1ERA
AB12CS1ERA
AB18CS1ERA
AB24ES1ERA
AC12CS1ERA
AC18CS1ERA
AC24CS1ERA
AD09LS1ERA
AD12LS1ERA
AD18LS1ERA
AD24LS1ERA
Outdoor: 3U19FS1ERA
4U25HS1ERA
4U30HS1ERA
5U34HS1ERA
Edition: 2010-12-10

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  Summary of Contents for Haier AD18LS1ERA

  • Page 1: Service Manual

    DC inverter technology, high energy efficiency, higher EER A+, energy saving for the user Universal indoor units for multi upgrade series, Unitary smart DC inverter and HAIER DAC split inverter type High voltage communication, convenient wiring work Multiple control types 10℃...
  • Page 2: Table Of Contents

    CONTENTS Contents………………………………………………………..2 1. Description of products & features………………………….3 2. Specification…………………………………………………...6 3. Dimensions…………………………………………………..21 4. Pipe and wiring installation…..……………………………..26 5. PCB photo, wiring diagram and function description……..72 6. Diagnostic code and troubleshooting.……………………...95 7. Outdoor performance curves………..……………………..101 8. Indoor air velocity and temperature distribution curves..105 9.
  • Page 3: Description Of Products & Features

    1.Description of products & features 1.1. Products code explanation U 19 Climate type: T1 (see table 1) Frequency type: DC inverter Product type: A stands for heat pump type, refrigerant is R22 B stands for heat pump type, refrigerant is R407C E stands for heat pump type, refrigerant is R410A N stands for cool only type, refrigerant is R407C Design edition...
  • Page 4 DAC split inverter type The indoor units are universal for the outdoors which belongs to EASY STOCK series. EASY STOCK is new concept brought by Haier to be convenient for design, sale, operation, and stock management. Adopt the much friendlier refrigerant R410a The air conditioner system adopts the greatly friendly refrigerant R410a, which is protective for the ozone layer and is good to avoid the earth getting warmer.
  • Page 5 Commercial Air Conditioner on the operation panel. Then according to the failure code chart, you can eliminate the failure soon. Central control function, if connected with a central controller That is convenient for building management. Weekly timing function, if connected with a weekly timer Universal power supply for 50Hz and 60Hz The multi upgrade series adopts universal power supply for 50Hz and 60Hz, which is convenient for design.
  • Page 6: Specification

    Commercial Air Conditioner 2. Specifications Item Model 3U19FS1ERA Function Cooling Heating Rating capacity 5400 6500 Power input (indoor + outdoor) 1410 1520 Current input (indoor + outdoor) 6.13 EER / COP 3.84 4.28 Minimum capacity 1500 1800 Minimum power input Maximum capacity 7000 8100...
  • Page 7 Item Model 4U25HS1ERA Function Cooling Heating Rating capacity 7600 8600 Power input (indoor + outdoor) 2100 2060 Current input (indoor + outdoor) EER / COP 3.62 4.18 Minimum capacity 1500 1800 Minimum power input Maximum capacity 9000 9500 Maximum power input (indoor + outdoor) 3500 3500 Power source...
  • Page 8 Item Model 4U30HS1ERA Function Cooling Heating Rating capacity 8100 9800 Power input (indoor + outdoor) 2220 2430 Current input (indoor + outdoor) 10.6 EER / COP 3.65 4.03 Minimum capacity 1500 1800 Minimum power input Maximum capacity 9800 10500 Maximum power input (indoor + outdoor) 3800 3800 Power source...
  • Page 9 Item Model 5U34HS1ERA Function Cooling Heating Rating capacity 10000 10700 Power input (indoor + outdoor) 2940 2850 Current input (indoor + outdoor) 12.8 12.4 EER / COP 3.75 Minimum capacity 1500 1800 Minimum power input Maximum capacity 11000 11500 Maximum power input (indoor + outdoor) 4000 4000 Power source...
  • Page 10 Item Model AB09CS1ERA Function cooling heating Capacity Sensible heat ratio 0.71 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX1 Speed(H-M-L) r/min 690/620/560 Fan motor output power 0.03 Air-flow(H-M-L) 620/520/450 m³/h Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area m²...
  • Page 11 Item Model AD09LS1ERA Function cooling heating Capacity Sensible heat ratio 0.71 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX1 Speed(H-M-L) 1000/900/800±50 r/min Fan motor output power 0.05 Air-flow(H-M-L) 550/450/400 m³/h Static pressure Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area m²...
  • Page 12 Item Model AB12CS1ERA Function cooling heating Capacity 3.5(0.9--4.5) 3.7(1.0--4.8) Sensible heat ratio 0.71 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX1 Speed(H-M-L) 690/620/560 r/min Fan motor output power 0.03 Air-flow(H-M-L) m³/h 620/520/450 Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area 0.272...
  • Page 13 Item Model AC12CS1ERA Function cooling heating Capacity 3.5(0.9--4.5) 3.9(1.0--4.8) Sensible heat ratio 0.71 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX2 Speed(H-M-L) r/min 1100/1025/825 Fan motor output power 0.09 Air-flow(H-M-L) 650/550/450 m³/h Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area m²...
  • Page 14 Item Model AD12LS1ERA Function cooling heating Capacity 3.5(0.9--4.5) 4.0(1.0--4.8) Sensible heat ratio 0.71 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX1 Speed(H-M-L) 1000/900/800±50 r/min Fan motor output powe 0.05 Air-flow(H-M-L) 550/450/400 m³/h Static pressure Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area...
  • Page 15 Item Model AB18CS1ERA Function cooling heating Capacity 5.0(1.8--5.8) 5.2(2.0--6.5) Sensible heat ratio 0.71 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX1 Speed(H-M-L) r/min 795/690/550±50 Fan motor output power 0.065 Air-flow(H-M-L) 680/620/500 m³/h Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area 0.272...
  • Page 16 Item Model AC18CS1ERA Function cooling heating Capacity 5.0(1.8--5.8) 5.5(2.0--6.5) Sensible heat ratio 0.71 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX2 Speed(H-M-L) 1220/1190/1050 r/min Fan motor output power 0.075 Air-flow(H-M-L) m³/h 800/720/650 Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area 0.45...
  • Page 17 Item Model AD18LS1ERA Function cooling heating Capacity 5.0(1.8--6.0) 5.5(2.0--6.2) Sensible heat ratio 0.73 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX2 Speed(H-M-L) 730±30/540±30/400±30 r/min Fan motor output pow 0.05 Air-flow(H-M-L) 850/780/600 m³/h Static pressure Type / Diameter inner grooved pipe/φ7...
  • Page 18 Item Model AB24ES1ERA Function cooling heating Capacity 6.5(2.0--7.3) 7.1(2.5--8.0) Sensible heat ratio 0.72 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX1 Speed(H-M-L) r/min 670±40/550±50/460±50 Fan motor output power 0.16 Air-flow(H-M-L) 1300/1100/870 m³/h Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area 0.49...
  • Page 19 Item Model AC24CS1ERA Function cooling heating Capacity 6.3(2.0--7.3) 7.1(2.5--8.0) Sensible heat ratio 0.72 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX2 Speed(H-M-L) 1220±40/1190±50/1050±50/980±50 r/min Fan motor output power 0.10 Air-flow(H-M-L) m³/h 800/720/650 Type / Diameter inner grooved pipe/φ7 Heat exchanger Total Area m²...
  • Page 20 Item Model AD24LS1ERA Function cooling heating Capacity 6.8(2.0--7.6) 7.1(3.0--8.3) Sensible heat ratio 0.72 Dehumidifying capacity 10‐³×m³/h Power Supply 1PH,220-230V 50-60HZ Type × Number CENTRIFUGALX2 Speed(H-M-L) r/min 1250±40/1130±40/1000±50/850±50 Fan motor output power 0.05 Air-flow(H-M-L) 1200/1050/850(white terminal 0 Pa) m³/h Static pressure Type / Diameter inner grooved pipe/φ7 Heat exchanger...
  • Page 21: Dimensions

    3. Dimension 3U19FS1ERA: Air inlet Air inlet Air outlet Handle Handle Liquid pipe:Ø6.35(flared)1/4 A unit connection Gas pipe :Ø9.52(flared)3/8 Liquid pipe:Ø6.35(flared)1/4 B unit connection Gas pipe :Ø9.52(flared)3/8 Liquid pipe:Ø6.35(flared)1/4 C unit connection Gas pipe :Ø9.52(flared)3/8 4U25HS1ERA, 4U30HS1ERA: Air inlet Air inlet Gas pipe Ø9.52(flared) 3/8(A,B,C unit) Air outlet...
  • Page 22 5U34HS1ERA: Air inlet Air inlet Gas pipe Air outlet Ø9.52(flared) 3/8(A,B,C,D unit) Ø12.7(flared) 1/2(E unit) Handle Indoor and outdoor Handle connect wiring hole (30*48) Handle A unit connection B unit connection C unit connection D unit connection E unit connection Liquid pipe Ø6.35(flared) 1/4 -22-...
  • Page 23 -23-...
  • Page 24 AD09LS1ERA AD12LS1ERA AD14LS1ERA AD18LS1ERA AD09LS1ERA AD12LS1ERA AD14LS1ERA AD18LS1ERA -24-...
  • Page 25 Cassette type unit: AB24 1000 over -25-...
  • Page 26: Pipe And Wiring Installation

    4. Pipe and wiring installation 4.1 Multi combination and the data 3U19FS1ERA combination and the data COOLING total cooling total power input total current Combinatio capacity(Kw) capacity(kW) (kW) (A)@230V (W/W) (Nom. cooling) energy Comb. min. rate min. rated max. min. rated max.
  • Page 27 4U25HS1ERA combination and the data COOLING Rated capacity Output/kW total cooling total power input total current Combinations (Nom. cooling) capacity(kW) (kW) (A)@230V (W/W) energy Comb. rated label Unit Unit Unit Unit Unit Unit Unit Unit min. rated min. rated max. min.
  • Page 28 4U25HS1ERA combination and the data HEATING Rated capacity Output/kW total heating total power input total current Combinations (Nom. heating) capacity(KW) (A)@230V (W/W) energy Comb. rated label Unit Unit Unit Unit Unit Unit Unit Unit min. rated min. rated max. min. rated max.
  • Page 29 4U30HS1ERA combination and the data COOLING energy Rated capacity Output/kW total cooling total power input total current Combinations label (Nom. cooling) capacity(kW) (kW) (A)@230V (W/W) Comb. min. rated max. min. rated max. min. rated max. Unit Unit Unit Unit Unit Unit Unit Unit...
  • Page 30 4U30HS1ERA combination and the data HEATING total heating total power input total current energy Rated capacity Output/kW Combinations label (Nom. heating) capacity(KW) (A)@230V (W/W) Comb. min. rated max. min. rated max. min. rated max. Unit Unit Unit Unit Unit Unit Unit Unit rated...
  • Page 31 5U34HS1ERA combination and the data COOLING Rated capacity Output/kW total cooling total power input total current Combinations (Nom. cooling) capacity(kW) (kW) (A)@230V (W/W) energ Comb. rated y label Unit Unit Unit Unit Unit Unit min. rated max. min. rated max. min.
  • Page 32 5U34HS1ERA combination and the data — 2.50 2.50 2.50 — 1.8 10.0 11.0 0.55 3.01 13.35 19.0 3.32 12 — 2.27 2.27 2.27 3.18 — 1.8 10.0 11.0 0.55 2.96 13.13 19.0 3.38 18 — 2.00 2.00 2.00 — 1.8 10.0 11.0 0.55 2.94 13.04...
  • Page 33 5U34HS1ERA combination and the data 18 18 18 3.57 3.57 3.57 1.8 10.7 11.5 0.55 3.15 13.98 19.0 3.40 — 2.30 2.30 2.30 2.30 — 0.55 2.87 12.73 19.0 3.21 — 2.30 2.30 2.30 2.90 — 0.55 2.87 12.73 19.0 3.41 12 —...
  • Page 34: Wiring Connection

    4.2. Wiring connection 3U19FS1ERA If this outdoor unit connects with AS*S1ERA, the connecting cable is 1.5mm2 Connect the connecting wires between indoor and outdoor units and ensure the sequence numbers on terminals match with each other. -34-...
  • Page 35 4U25-30HS1ERA If this outdoor unit connects with AS*S1ERA, the connecting cable is 1.5mm2 Connect the connecting wires between indoor and outdoor units and ensure the sequence numbers on terminals match with each other. -35-...
  • Page 36 5U34HS1ERA: If this outdoor unit connects with AS*S1ERA, the connecting cable is 1.5mm2 Connect the connecting wires between indoor and outdoor units and ensure the sequence numbers on terminals match with each other. -36-...
  • Page 37 4.3 Limitation values on pipe installation 3U19FS1ERA Item Unit Description Standard Maximum A,B,C liquid pipe mm Size of the liquid side connection pipe φ6.35 A,B,C Gas pipe mm Size of the gas side connection pipe φ9.52 L1 (one way) Max.piping length between IU and OU of the way ≤10 ≤25 L2 (one way)
  • Page 38 4U25-30HS1ERA Item Unit Description Standard Maximum A,B,C, Dliquid pipe mm Size of the liquid side connection pipe φ6.35 A,B,C Gas pipe mm Size of the gas side connection pipe φ9.52 D Gas pi[pe mm Size of the gas side connection pipe φ12.7 L1 (one way) Max.piping length between IU and OU of the way...
  • Page 39 5U34HS1ERA: U n i Item Description Standard Maximum A,B,C,D,E liquid pipe mm Size of the liquid side connection pipe φ6.35 A,B,C,D Gas pipe mm Size of the gas side connection pipe φ9.52 E Gas pi[pe mm Size of the gas side connection pipe φ12.7 L1 (one way) Max.piping length between IU and OU of the way...
  • Page 40 Connection cautions model 3U19FS1ERA 4U25HS1ERA,4U30HS1ERA 5U34HS1ERA connection priority between indoor and stop valve higher from down to up when there is 1 indoor,the prior stop valve is when there are 2 D、C indoors,the prior C、B E、D stop valves are when there are 3 indoors,the prior C、B、A D、C、B...
  • Page 41 4.4 Outdoor installation -40-...
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  • Page 48 –¨ 25.40 YCZ-A001 YCZ-A003 -47-...
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  • Page 50 4.5. Cassette type AB***ERA -49-...
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  • Page 55 4.6. Convertible type AC*** ERA Floor console SELECTING THE MOUNTING POSITION Fig.A may be difference WARNING 1.5m Install at a place that can withstand the weight of the indoor and outdoor units and install positively so that the units will not topple or fall Left Right CAUTION...
  • Page 56: Preparing Indoor Unit Installation

    PREPARING INDOOR UNIT INSTALLATION REMOVE THE INTAKE GRILL Open the intake grill and remove the three or four or six screws.(Fig. 1) Fig. 1 Remark: The main unit can be wired before the indoor unit is installed. Select the most appropriate installation order.
  • Page 57 2. INSTALLING DRAIN HOSE Wrap the insulation (drain hose) around the drain Select whether the drain hose will be connected hose connection. (Fig.7) to the left or right side.(Fig.3) Insert the drain hose into the drain pan, then secure the drain hose with a nylon fastener.
  • Page 58 1. DRILLING FOR PIPING 3. INSTALLING BRACKETS Select piping and drain directions. Install the brackets with nuts, washers and spring (Fig.11) washers.(Fig. 15) Rear (Install the drain Fig. 15 hose in the direction.) Right Spring washer Bracket Special nut Fig. 11 CAUTION Bracket (Left) Bracket (Right)
  • Page 59: Outdoor Unit Installation

    5. INSTALL THE DRAIN HOSE OUTDOOR UNIT INSTALLATION Select whether the drain hose will be connected to CONNECTING THE PIPING the left or right side.(Fig.3) Insert the drain hose into the drain pan, then secure 1. FLARE PROCESSING the drain hose with a nylon fastener.(Fig.6) (1) Cut the connection pipe with pipe cutters so Wrap the insulation (drain hose)around the drain that the pipe is not deformed.
  • Page 60 3. PIPING CONNECTION Fit the nut on and fasten 90 0.5 The maximum length and drop height of connecting pipe Please refer to the installation manual of outdoor unit Joint To ensure the efficiency , Pipes shall be as short as possible. Spanner Cautions for piping connection Do not twist or deform the connecting pipe.
  • Page 61: How To Connect Wiring To The Terminals

    HOW TO CONNECT WIRING TO THE TERMINALS A. For solid core wiring (or F-cable)(Fig.24A) (1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 25mm of the exposed solid wire. (2) Using a screwdriver, remove the terminal screw(s) on the terminal board. (3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw.
  • Page 62: Electrical Wiring

    ELECTRICAL WIRING (2) Pull out the electric component box. CAUTION Fig.28 (1) Match the terminal block numbers and connection cord colors with those of the outdoor unit. Erroneous wiring may cause burning of the electric parts. (2) Connect the connection cords firmly to the terminal block.
  • Page 63: Customer Guidance

    ELECTRICAL WIRING (2) OUTDOOR UNIT (1) Is there any abnormal noise and vibration during WARNING operation? (1) Always use a special branch circuit and install a special (2) Will noise, wind, or drain water from the unit disturb receptacle to supply power to the room air conditioner. the neighbors? (2) Use a circuit breaker and receptacle matched to (3) Is there any gas leakage?
  • Page 64 2. Mount the cover plate.(Left) (1) Join the cover plate (left) and mount with screws. Fig. 33 3. Mount the intake grill. (1) Cut the right side of the intake grill. This is only when the pipe exits from the right side Fig.
  • Page 65: Preparation For Installation

    4.7 Duct type AD***ERA 2. Preparation for installation Installation tools Screw Driver (flat head, wabbler, triangle) 8 Pipe Expander Steel Saw Knives 60mm Drill 10 Clippers Inner Hexagon Spanner 11 Leakage Checker or Soap Liquid Shifting Spanner 12 Measuring Tape Spanner 13 Scraper or File Pipe Cutter...
  • Page 66: Installation Procedure

    5. Installation procedure 1. Drill a hole in the wall and insert the connecting pipe and wire through a PVC wall-through tube purchased locally. The wall hole shall be with a outward down slope of at least 1/100. (See Figure 1) 2.
  • Page 67 The distance between air duct outlet and air conditioner outlet is according to the length of actually installed air duct and in service behavior of the static pressure terminal: Installation sketch map for long and short air duct is showed below, when connect to short air duct, using low static terminal (terminal color is white), the distance between air duct outlet and air conditioner outlet is no more than 0.5m;...
  • Page 68 2. Installation of air return duct Use rivets to connect the air return duct to the air return inlet of the indoor unit. The other end connects to the air return shutter. as shown in Fig.2. air return air return shutter duct indoor unit...
  • Page 69 Original concrete slab Use hole hinge, hole plunger or hole bolt. Steel reinforcement structure Use steel angle or new support steel angle directly. Hanging bolt Support steel angle Suspension screw Hanging of the indoor unit Fasten the nut on the suspension screw and then hang the suspension screw in the Tslot of the suspension part of the unit.
  • Page 70 Pipe and insulation material Pipe Rigid PVC pipe VP31.5mm (internal diameter) Insulation Foamed PE with thickness above 7mm Hose Drain pipe size: ? 19.05mm (3/4") PVC pipe. The hose is used for adjusting the off-center and angle of the rigid PVC pipe. Directly stretch the hose to install without making any deformation.
  • Page 71: Trial Operation

    Pipe expansion dimensions as follows: Incorrect Correct Pipe diameter Size A (mm) 6.35 mm (1/4 " ) 0.8 ~ 1.5 9.52 mm (3/8 " ) 1.0 ~ 1.8 Slope Damage Bur Partial Overlong 12.7 mm (1/2 " ) 1.2 ~ 2.0 Pipe expander The connection of indoor unit pipes must use double spanners.
  • Page 72 Brazed seam B=8.0-9.0(mm) d=4.3-5.3(mm) Ring Terminal T=1.0-2.0(mm) (For your referrence) Wiring method of ring terminal 2 Wiring method of straight terminal For connecting line which end is not a ring, its wiring method as follows: loosen wiring screw ans insert the end of connecting line totally into the terminal block,then tighten the screw and pull the connecting line slightly to confirm that it is clamped firmly.
  • Page 73: Pcb Photo,Wiring Diagram And Function Description

    5. PCB photo,Wiring diagram and function description 5.1 Outdoor unit 5.1. 1. Outdoor PCB photo 3U19FS1ERA filter board 4U25/30HS1ERA filter board 5U34HS1ERA filter board -72-...
  • Page 74 outdoor display board(small service PCB) outdoor main board -73-...
  • Page 75 5.1.2. Wiring diagram 3U19FS1ERA -74-...
  • Page 76 4U25/30HS1ERA 5U34HS1ERA -75-...
  • Page 77 5.1.3 . Switch setting and functions: Outdoor main PCB 0151800075 SW5 definition definition cooling only heat pump (default) set ON if frost easily set OFF if hard to frost(default) Max. running current is 11A normal control (default) OFF ON --- 3U19* ON ON --- 4U25*...
  • Page 78 3. Main control functions 3.1 Refrigerant diagram Pipe system for 3U19FS1ERA -77-...
  • Page 79 Pipe system for 4U25/30HS1ERA -78-...
  • Page 80 Pipe system for 5U34HS1ERA 3.2 Outdoor frequency control 3.2.1 Compressor running frequency range: 20~95RPS 3.2.2 Defination of high-efficiency operation and its frequency control In order to meet the cooling request at high ambient temperature and the heating request at low ambient temperature, we set the high-efficiency operation.
  • Page 81 3.3.2 Initialization of EEV EEV driving speed: open direction: 32MS; close direction: 32MS 3.3.3 Open angle limitation of EEV Unit stop Adjustable upper Thermostat ON Thermostat Adjustable lower limitation limitation Cool/dry 5(E) 450(E) standard open 5(E) 80(E) angle+tolerance heat 60(E) 450(E)...
  • Page 82 not go down greatly. Ambient temp. TA≤27degree, when compressor stops, the electric heater will be electrified. When TA≥32degree, or compressor running, the electric heater will be off. Heater ON Ambient temp. TA(℃) 3.6 Control of defrosting in heating In heating mode, defrosting temp. sensor will check the frosting condition of outdoor heat exchanger and make defrosting control.
  • Page 83 3.6.4 Defrosting operation flow chart beginning fixed frequency indicated FQY 60s defrosting FQY 80 Hz(E) soft startup compressor outdoor motor send defrosting signal to indoor Auto 4-way valve 450-pulse 450-pulse 350-pulse(E) all EEVs auto open angle auto open angle all indoor motors ON anti-cold air function 3.7Frequency control when Td is too high Purpose: make compressor frequency control if the discharging temp.
  • Page 84 3.8 Frequency control when there is CT over current protection Stop immediately, if abnormal stop 3 times in 1 hour, the unit will stop and alarm. 1.0 I Reduce FQY rapidly 2HZ/S 0.95I Reduce FQY rapidly 1HZ/S 0.93I Reduce FQY slowly 1HZ/10S 0.90I Remain FQY 0.88I...
  • Page 85 ·When unit stops, the reason that system still checks the low pressure : in a long time stop, make protection for the compressor on the condition of great refrigerant leakage. ·The reason that low pressure switch action time is 30 seconds: when compressor stops, low pressure does not change, so it will be shorter than the set time in operation.
  • Page 86 3.11 Oil return operation control 3.11.1 Entering condition When the compressor running frequency is lower than 58Hz (E) continuously for 8 hrs, the system will enter oil return operation. In the course of mode changeover, manual unit stop or protective unit stop, the time will be accumulative.
  • Page 87 After oil return in cooling mode, the quit condition of refrigerant eliminated: 1 minute later after oil return is over Td Tc & ‐ >30℃ Ts Tc2AVE ‐ >30℃ Tc2AVE< 35 ‐ ℃ Max. 10 minutes Oil return procedure in heating mode: Send oil return signal oil return begins oil return over...
  • Page 88 5.2 Indoor unit 5.2.1 AB,AC,AD PCB photo -87-...
  • Page 89 5.2.2. AB,AC,AD Wiring Diagram -88-...
  • Page 90 5.2.5. . Electrical Control Functions For Cassette and Convertible type 1. Dip switch functions: AB*CS1ERA, AC*CS1ERA, AD*LS1ERA: SW1-1~~SW1-8 SW1-1 SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 SW1-7 SW1-8 Description 09 indoor 12 indoor 18 indoor 24 indoor Room card invalid Room card valid Heat pump Cooling only Without temperature compensation...
  • Page 91 2. Sign definition: Indoor outdoor Toci Outlet Inlet Thick pipe Compressor Compressor Ambient Ambient Defrost pipe pipe coil of heat condenser suction discharging temp. temp. temp. temp. temp. temp. exchanger temp. temp. temp. Tcomp1,2 Tset Temp. compensation temp. 3. Dry operation Tai<16℃, indoor unit stops running and sends stop-unit signal to outdoor.
  • Page 92 6.4 In AUTO mode, when the indoor unit occurs abnormal operation, the indoor unit will keep OFF state, and the buzzer will not sound until the outdoor mode and the requested mode of indoor unit are the same. 6.5 COOL (included AUTO COOL), DRY, FAN are not abnormal mode. 6.6 HEAT and FAN are not abnormal mode.
  • Page 93 12. Water pump control 12.1 Water pump will be electrified when indoor unit enters non-heating mode until indoor unit stops. 5 minutes later after indoor unit stops, water pump will stop. 12.2 When indoor unit is in heating mode, water pump will not operate. 12.3 In OFF state and in any mode, once float switch signal is measured, indoor unit will send OFF signal to outdoor and send the failure code of drainage system to the wired controller, then the water pump will work until the float switch signal is cancelled.
  • Page 94 17. Healthy negative ion function When receiving the healthy signal from the wired controller or remote controller, if fan motor is running, the negative ion will work; If the fan motor stops, the negative ion generator will stop. 18. Auto-restart function 18.1 Wired control type: jumper J07 at high level, auto-restart is available, if at low level, auto-restart is cancelled;...
  • Page 95 20. Setting method of temperature compensation Tcomp A. Wired control type unit: this function is not available B. Remote control type unit: In cooling or heating mode, there is always with the temp. compensation. In heating mode: In 24℃ heating mode, press SLEEP(or SWING) button 7 times continuously within 5 seconds, indoor buzzer sounds twice, that shows temp.
  • Page 96: Diagnostic Code And Troubleshooting

    6. Diagnostic code and trouble shooting 6.1.1. Diagnostic code for outdoor unit -95-...
  • Page 97 6.1.2. Diagnostic code for indoor unit -96-...
  • Page 98: Trouble Shooting

    6.2. Trouble Shooting: Trouble 1: No display on the operation panel start check if display replace display panel and the panel and check unit matched again well if the red diode if the power check the terminal and green diode terminal block is block and the on indoor PCB...
  • Page 99 Trouble 3: Communication failure between indoor and outdoor start as per the wiring re-wiring, and diagram, check if check again communication wiring is correct check if the if the power cable and the PCB is faulty, communication port communication wire are replace and connecting to the too close, resulting in the...
  • Page 100 Trouble 8: Outdoor unit alarms sensor failure start as per the wiring re-fix the diagram, check if sensor and connection port check again between sensor and PCB is correct check if the sensor check if the replace sensor is in open circuit or sensor resistor and check the connection port...
  • Page 101 Failure 11: Low pressure switch failure Reason: 1. Too low system pressure causes that the unit stops and the compressor protection works, the failure can be resumed. 2. Pressure switch wire is not fixed well or in open circuit. start check if the connector check if the 2 if indoor fan motor...
  • Page 102: Outdoor Performance Curves

    7. Outdoor performance curves 3U19FS1ERA cooling capacity in relation to temperature 7000 Indoor 6500 temperature W.B./D.B. 6000 5500 5000 14/20 16/22 4500 19/27 22/30 4000 3500 Outdoor temperature D.B. 3U19FS1ERA heating capacity in relation to temperature Indoor temperatureD 8500 7500 6500 5500 4500...
  • Page 103 4U25HS1ERA cooling capacity in relation to temperature 10000 Indoor temperature W.B./D.B. 9000 8000 7000 14/20 16/22 6000 19/27 22/30 5000 4000 Outdoor temperature D.B 4U25HS1ERA heating capacity in relation to temperature 10000 Indoor temperatureD 9000 8000 7000 6000 5000 4000 -12.5 -7.5 -2.5...
  • Page 104 4U30HS1ERA cooling capacity in relation to temperature 11000 Indoor temperature W.B./D.B. 10000 9000 8000 14/20 7000 16/22 19/27 22/30 6000 5000 Outdoor temperature D.B. 4U30HS1ERA heating capacity in relation to temperature 12000 Indoor temperatureD. 11000 10000 9000 8000 7000 6000 5000 -15 -12.5 -10 -7.5...
  • Page 105 5U34HS1ERA cooling capacity in relation to temperature 13000 Indoor temperature 12000 W.B./D.B. 11000 10000 9000 14/20 16/22 8000 19/27 22/30 7000 6000 Outdoor temperature D.B. 5U34HS1ERA heating capacity in relation to temperature 14500 Indoor temperatureD. 13500 12500 11500 10500 9500 8500 7500 6500...
  • Page 106: Indoor Air Velocity And Temperature Distribution Curves

    8. Indoor air velocity and temperature distribution curves 8.1 AB092-182CS1ERA: a. Cooling / Air Velocity Distribution Cooling Blowy angle:40 Air Velocity Distribution 2.7m 1.5m/s 1.5m/s 1.0m/s 1.0m/s 0.5m/s 0.5m/s b. Cooling / Temperature Distribution Cooling Blowy angle:40 Temperature Distribution 2.7m -105-...
  • Page 107 c. Heating / Air Velocity Distribution Heating Blowy angle:70 Air velocity Distribution 2.7m 1.5m/s 1.5m/s 1.0m/s 1.0m/s 0.5m/s 0.5m/s d. Heating / Temperature Distribution Heating Blowy angle:70 Temperature Distribution 2.7m -106-...
  • Page 108 8.2 AC14/182CS1ERA: a) Grounding a. Cooling / Air Velocity Distribution Cooling Blowy angle:25 Air Velocity Distribution 0.5m/s 1.0m/s 1.5m/s b. Cooling / Temperature Distribution Cooling Blowy angle:25 Temperature Distribution -107-...
  • Page 109 c. Heating / Air Velocity Distribution Heating Blowy angle:5 Air velocity Distribution 0.5m/s 1.0m/s d. Heating / Temperature Distribution Heating Blowy angle:5 Temperature Distribution -108-...
  • Page 110 b) Ceiling a. Cooling / Air Velocity Distribution Cooling Blowy angle:25 Air Velocity Distribution 1.0m/s 0.5m/s b. Cooling / Temperature Distribution Cooling Blowy angle:25 Temperature Distribution -109-...
  • Page 111 c. Heating / Air Velocity Distribution Heating Blowy angle:65 Air velocity Distribution d. Heating / Temperature Distribution Heating Blowy angle:65 Temperature Distribution -110-...
  • Page 112: Air Flow And Static Pressure Chart

    9. Air flow and static pressure chart AD09LS1ERA/AD12LS1ERA AIRFLOW AND STATIC PRESSURE CHART 20Pa 15Pa 10Pa static pressure (Pa) AD18LS1ERA AIRFLOW AND STATIC PRESSURE CHART 20Pa 15Pa 10Pa static pressure (Pa) -111-...
  • Page 113 AD24LS1ERA Air flowand static pressure chart 1300 1200 1100 1000 20pa 15pa 10pa Static pressure (pa) -112-...
  • Page 114: Noise Level

    10. Noise level a. Casset type indoor unit Test method According to the testing illustrator, the microphones wearing sponge style cover should be placed in the right position -113-...
  • Page 115 level pressure Sound level pressure Sound -114-...
  • Page 116 level pressure Sound -115-...
  • Page 117 b. Convertible type indoor unit Test method According to the testing illustrator, the microphones wearing sponge style cover should be placed in the right position -116-...
  • Page 118 level pressure Sound level pressure Sound -117-...
  • Page 119 level pressure Sound -118-...
  • Page 120 c. Duct type indoor unit Test method According to the testing illustrator, the microphones wearing sponge style cover should be placed in the right position -119-...
  • Page 121 level pressure Sound level pressure Sound -120-...
  • Page 122 -121-...
  • Page 123 Test method Set the unit: 1) the unit is placed on the rubber whose thickness is 5mm; 2) if the height between the air outlet and ground is less than 1m, block the unit up to 1m.far from ground Test position: After setting the unit ,the test position for the noise is 1m far from the front panel -122-...
  • Page 124 level pressure Sound level pressure sound -123-...
  • Page 125 level pressure sound level pressure sound -124-...
  • Page 126: Sensor Characteristic

    001A3900159 AB24ES1ERA B25/50=4200K±3% AC12CS1ERA R25=10KΩ±3% coil temp. sensor 001A3900006 AC18CS1ERA B25/50=3700K±3% AC24CS1ERA AD09LS1ERA AD12LS1ERA R25=23KΩ±2.5% AD18LS1ERA ambient temp. sensor 0010451323 B25/50=4200K±4% AD24LS1ERA R25℃=10KΩ±3% discharging temp. sensor B25/50=3700K±3% R25℃=10KΩ±3% mid-condensor temp. sensor B25/50=3700K±3% R25℃=10KΩ±3% 0010452538 defrosting temp. sensor B25/50=3700K±3%...
  • Page 127 R80=50KΩ±3% R80=50KΩ±3% R25=10KΩ±3% R25=10KΩ±3% B25/80=4450K±3% B25/80=4450K±3% B25/50=3700K±3% B25/50=3700K±3% T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) 11600 536.6 -20℃ 90.79 6.95 10860 511.1 85.72 6.68 10170 486.9 80.96 5.43 9529 76.51 8932 442.3 72.33 5.59 8375 421.7 68.41 5.73 7856 402.1 64.73 5.52...
  • Page 128 R25=23KΩ±2.5% R25=23KΩ±2.5% B25/50=4200K±3% B25/50=4200K±3% T(℃) Rnom(KΩ) T(℃) Rnom(KΩ) 281.34 26.54 -20℃ 22℃ -19℃ 263.56 23℃ 25.3 247.04 24.12 -18℃ 24℃ -17℃ 231.66 25℃ 217.35 21.94 -16℃ 26℃ -15℃ 204.02 27℃ 20.94 191.61 19.99 -14℃ 28℃ -13℃ 180.04 29℃ 19.09 -12℃ 169.24 30℃...
  • Page 129: Controller Functions

    12. Controller functions -128-...
  • Page 130 -129-...
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