Ecoer EAHAEC-36 Service Manual
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Ecoer EAHAEC-36 Service Manual

Inverter ductedsplit 3&5 ton r-410a heat pump
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SDi Decades Extreme Service Manual
SDi Decades Extreme Service Manual
All phases of this installation must comply with National, State and Local Codes.
IMPORTANT
These instructions do not cover all variations in systems or provide for every possible contingency
to be met in connection with installing and servicing. Should further information be desired or
should particular problems arise which are not covered sufficiently for the purchaser's purposes,
the matter should be referred to local distributor.
Manufacturer reserves the right to change specifications or designs without notice.
Inverter Ducted Split
3&5 Ton R-410A Heat Pump
1/157
www.ecoer.com
May. 2023

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  • Page 1 SDi Decades Extreme Service Manual www.ecoer.com 1/157 SDi Decades Extreme Service Manual Inverter Ducted Split 3&5 Ton R-410A Heat Pump All phases of this installation must comply with National, State and Local Codes. IMPORTANT These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with installing and servicing.

  • Page 2: Table Of Contents

    SDi Decades Extreme Service Manual www.ecoer.com 2/157 Contents 1. Safety Precautions---------------------------------------------------------------------- Precautions------------------------------------------------------------------------------------------- 1.2 Information servicing------------------------------------------------------------------------------ Model Reference & External Appearance-------------------------------------- 2.1 Model Reference----------------------------------------------------------------------------------- 2.2 External Appearance------------------------------------------------------------------------------- 3. Indoor Unit----------------------------------------------------------------------------------- 3.1 Indoor Unit - Air Handler Type------------------------------------------------------------------ 4. Outdoor Unit--------------------------------------------------------------------------------- 4.1 Dimensional Drawings---------------------------------------------------------------------------- 4.2 Service...
  • Page 3 SDi Decades Extreme Service Manual www.ecoer.com 3/157 9. Indoor Unit Disassembly--------------------------------------------------------------- 9.1 Indoor Unit - Air Handler Type------------------------------------------------------------------- 10. Outdoor Unit Disassembly----------------------------------------------------------- Appendix----------------------------------------------------------------------------------- Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (℃ – K)----- Temperature Sensor Resistance Value Table for TP(for some units) (℃ –...

  • Page 4: Safety Precautions

    SDi Decades Extreme Service Manual www.ecoer.com 4/157 1. Safety Precautuions 1.1 Precautions To prevent personal injury, or property or unit damage, adhere to all precautionary measures and instructions outlined in this manual. Before servicing a unit, refer to this service manual and its relevant sections.

  • Page 5: Information Servicing

    SDi Decades Extreme Service Manual www.ecoer.com 5/157 WARNING Do not open the inlet grill of the unit during operation.  Do not touch the electrostatic filter if the unit is equipped with one.   Do not block the inlet or outlet of air flow to the unit.
  • Page 6 SDi Decades Extreme Service Manual www.ecoer.com 6/157 1.2.6 No ignition sources • No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion.
  • Page 7 SDi Decades Extreme Service Manual www.ecoer.com 7/157 • Ensure that apparatus is mounted securely. • Ensure that seals or sealing materials have not degraded such that they no longer serve the purpose of preventing the ingress of flammable atmospheres. Replacement parts shall be in accordance with the manufacturer’s specifications.
  • Page 8 SDi Decades Extreme Service Manual www.ecoer.com 8/157 1.2.16 Charging procedures • In addition to conventional charging procedures, the following requirements shall be followed: • Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
  • Page 9 SDi Decades Extreme Service Manual www.ecoer.com 9/157 • Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release.

  • Page 10: Model Reference & External Appearance

    Refer to the following table to determine the specific indoor and outdoor unit model number of your purchased equipment. Capacity (Btu/h) Indoor Unit Model Outdoor Unit Model Power Supply EAHAEC-36 ESCA16H-36 1Ph, 208/230V~, 60Hz EAHAEC-60 ESCA16H-60 2.2 External Appearance 2.2.1 Indoor Unit (Air Handler) 2.2.2...

  • Page 11: Indoor Unit

    Nitrogen Charge and Leakage Check Valve • Ecoer AHU indoor unit is standard with Nitrogen injection to maintain positive pressure of the indoor unit. It is easy to check from the check valve whether there is leakeage in the evaporator or not.
  • Page 12 SDi Decades Extreme Service Manual www.ecoer.com 12/157 3.2 Dimensional Drawings Model Dimensions inch inch Model Height 1245 1346 Model Width 24-1/2 Supply Air Opening Width 19-1/8 22-5/8 Return Air Opening Width 18-5/8 22-1/8 Model Depth Supply Air Opening Depth 10-1/4...
  • Page 13 SDi Decades Extreme Service Manual www.ecoer.com 13/157 3.3 Part names Coil compartment (Access panel Removed) Upflow drain pan Horizontal drain pan 3.4 Service Place MINIMUM CLEARANCE OF 25.4mm/1″ALL SIDES FLEXIBLE DUCT COLLAR Manufacturer reserves the right to change specifications or designs without notice.
  • Page 14 SDi Decades Extreme Service Manual www.ecoer.com 14/157 3.5 Accessories The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to in- stall the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or equipment failure.
  • Page 15 SDi Decades Extreme Service Manual www.ecoer.com 15/157 3.6 Fan Performance 1200 1000 0.148 External static pressure (in.w.c.) 1800 1600 1400 1200 1000 0.148 External static pressure (in.w.c.) Manufacturer reserves the right to change specifications or designs without notice. May. 2023...
  • Page 16 SDi Decades Extreme Service Manual www.ecoer.com 16/157 3.7 Noise Criterion Curves 1m/3.28ft 2m/6.56ft 1.5m/4.92ft Notes: -Sound measured at 1.5m/4.92ft away from the center of the unit. -Data is valid at free field condition -Data is valid at nominal operation condition -Reference acoustic pressure 0dB = 20µPa...
  • Page 17 SDi Decades Extreme Service Manual www.ecoer.com 17/157 3.8 Electrical Characteristics Capacity (Btu/h) 36k hyper Heat 60k hyper Heat Phase Power (indoor) Frequency And Volt 208/230V,60Hz Phase Power (Outdoor) Frequency And Volt 208/230V,60Hz Indoor unit(A) Max. Fuse Outdoor unit(A) Line quantity...
  • Page 18 SDi Decades Extreme Service Manual www.ecoer.com 18/157 3.9 Electrical Wiring Diagrams IDU Capacity (Btu/h) IDU Wiring Diagram 36k/60k 16023000011626 Abbreviation Paraphrase Yellow-Green Conductor Indoor Fan Capacitor Indoor Fan Motor Indoor ECM Motor TO CCM Comm.Bus Central Controller Indoor Room Temperature Sensor...
  • Page 19 SDi Decades Extreme Service Manual www.ecoer.com 19/157 Indoor Unit Wiring Diagram Manufacturer reserves the right to change specifications or designs without notice. May. 2023...
  • Page 20 SDi Decades Extreme Service Manual www.ecoer.com 20/157 3.10 Electrical Wiring Diagrams 3.10.1 Micro-Switch Introduce: A ALARM terminal port CN33: 1.Provide the terminal port to connect ALARM, but no voltage of the terminal port , the power from the ALARM system (not from the unit ).
  • Page 21 SDi Decades Extreme Service Manual www.ecoer.com 21/157 3.10.1 Micro-Switch Introduce: B. For remote control (ON-OFF) terminal port CN2 and short connector of JR1 1. Remove the short connector of JR1 when you use ON-OFF function; 2. When remote switch off (OPEN); the unit would be off;...
  • Page 22 SDi Decades Extreme Service Manual www.ecoer.com 22/157 3.10.2 Micro-Switch Introduce: FOR SETTING NETADDRESS S1+S2 CODE NETADDRESS 0~15 16~31 32~47 48~63 FACTORY √ SETTING A. Micro-switch S1 and dial-switch S2 are for address setting when you want to control this unit by a central controller.
  • Page 23 SDi Decades Extreme Service Manual www.ecoer.com 23/157 The first group controls the electric heating to turn on the SW2-1 3.6℉ 1.8℉ temperature difference Whether the electric heating SW2-2 is delayed Electric auxiliary heating delay SW2-3 30min 15min start time Compressor allowed to...

  • Page 24: Outdoor Unit

    SDi Decades Extreme Service Manual www.ecoer.com 24/157 4. Outdoor Unit 4.1 Dimensional Drawings Please check the corresponding dimensional drawing according to the panel plate. ODU Model Panel Plate Panel Plate E30 Outdoor Unit Dimension Mounting Dimension Model inch inch inch...

  • Page 25: Service Space

    SDi Decades Extreme Service Manual www.ecoer.com 25/157 4.2 Service Place Manufacturer reserves the right to change specifications or designs without notice. May. 2023...

  • Page 26: Capacity Correction Factor For Height Difference

    SDi Decades Extreme Service Manual www.ecoer.com 26/157 4.3 Capacity Correction Factor for Height Difference Capacity Pipe Length (m/ft) (Btu/h) Cooling 7.5/24.6 15/49.2 25/82 35/114.8 50/164 65/213.3 30/98.4 0.889 0.850 0.812 Indoor 20/65.6 0.924 0.898 0.859 0.820 Upper 10/32.8 0.959 0.933 0.907...

  • Page 27: Noise Criterion Curves

    SDi Decades Extreme Service Manual www.ecoer.com 27/157 4.4 Noise Criterion Curves 1.0m/3.28ft Note: H= 0.5 × height of outdoor unit Notes: -Sound measured at 1.0m/3.25ft away from the center of the unit. -Data is valid at free field condition -Data is valid at nominal operation condition -Reference acoustic pressure 0dB=20µPa...

  • Page 28: Refrigerant Cycle Diagrams

    SDi Decades Extreme Service Manual www.ecoer.com 28/157 4.5 Refrigerant Cycle Diagrams Pipe Size(Diameter:ø) Piping length(m/ft) Elevation(m/ft) mm(inch) Additional Refrigerant Model No. Liquid Rated Max. Rated Max. 19(3/4) 9.52(3/8) 7.5/24.6 65/213 30/98.4 65g/m(0.69oz/ft) 22(7/8) 9.52(3/8) 7.5/24.6 65/213 30/98.4 Manufacturer reserves the right to change specifications or designs without notice.

  • Page 29: Electrical Wiring Diagrams

    SDi Decades Extreme Service Manual www.ecoer.com 29/157 4.6 Electrical Wiring Diagrams ODU Model ODU Wiring Diagram 16022000036969 ODU Main Printed Inverter Module ODU Model 24V Printed Board Circuit Board Printed Board 17122000037804 17122000042012 17122000054047 Manufacturer reserves the right to change specifications or designs without notice.
  • Page 30 SDi Decades Extreme Service Manual www.ecoer.com 30/157 Outdoor Unit Wiring Diagram Manufacturer reserves the right to change specifications or designs without notice. May. 2023...
  • Page 31 SDi Decades Extreme Service Manual www.ecoer.com 31/157 Outdoor Unit Main Printed Circuit Board Diagram Manufacturer reserves the right to change specifications or designs without notice. May. 2023...
  • Page 32 SDi Decades Extreme Service Manual www.ecoer.com 32/157 Name Meaning L1_in: connect to L1-line (230V AC input) Power Supply L2_in: connect to L2-line (230V AC input) Exhaust temp. sensor TP TESTPORT CN35 Used for testing HEAT1 CN19/CN20 Connect to chassis heater, 208-230V AC when is ON...
  • Page 33 SDi Decades Extreme Service Manual www.ecoer.com 33/157 Outdoor Unit Inverter Module Printed Board Diagram Manufacturer reserves the right to change specifications or designs without notice. May. 2023...
  • Page 34 SDi Decades Extreme Service Manual www.ecoer.com 34/157 Name Meaning connect to main board L-Out Power Supply connect to main board N-Out connect to main board CN6 FAN_DC FAN_1/FAN_2 connect to outdoor DC fan 1& DC fan 2 CN_COMP connect to compressor Note: This section is for reference only.
  • Page 35 SDi Decades Extreme Service Manual www.ecoer.com 35/157 Outdoor Unit 24V Printed Board Diagram Name Meaning connect to one-way solenoid valve connect to pressure sensor (5VDC) CN28 connect to electric expansion valve (12VDC) TESTPORT CN45 used for testing (5VDC) connect to suction temp. sensor, cold plate temp.

  • Page 36: Installation

    SDi Decades Extreme Service Manual www.ecoer.com 36/157 5. Installation 5.1 Installation Overview Indoor Unit Indoor Unit Install the indoor unit Install the outdoor unit Install the drainpipe Connect the wires Connect the refrigerant pipes Evacuate the refrigeration system Perform a test run Manufacturer reserves the right to change specifications or designs without notice.
  • Page 37 SDi Decades Extreme Service Manual www.ecoer.com 37/157 5.2 Location selection 5.2.1 Unit location selection can refer to installation manual 5.2.2 DO NOT install the unit in the following locations: • Where oil drilling or fracking is taking place. • Costal areas with high salt content in the air.
  • Page 38 SDi Decades Extreme Service Manual www.ecoer.com 38/157 5.2.5 If the unit is exposed to heavy wind: • Install unit so that air outlet fan is at a 90° angle to the direction of the wind. If needed, build a barrier in front of the unit to protect it from extremely heavy winds.
  • Page 39 SDi Decades Extreme Service Manual www.ecoer.com 39/157 5.3.2 Installation place Horizontal installation Vertical installation 5.3.3 Install the main body The unit may be installed in one of the upflow, downflow, horizontal left or horizontal right orientations. Vertical installation Upflow D o w n f l o w Horizontal installation NOTE: For installation, an drain pan(not supplied) must be installed.
  • Page 40 SDi Decades Extreme Service Manual www.ecoer.com 40/157 Note: Vertical up and horizontal left installation does not need to change the direction of evaporator. Regular installation instructions Please follow these steps to perform Vertical up installation and Horizontal left installation: 1. Open the upper cover.
  • Page 41 SDi Decades Extreme Service Manual www.ecoer.com 41/157 4. Unplug temperature sensors T1,T2,T2A,T2B and 6. Take out the evaporator and drain pan and rotate 180 electronic expansion valve(EEV) from the control board. T1: Room temperature sensor T2: Evaporator central temperature sensor...
  • Page 42 SDi Decades Extreme Service Manual www.ecoer.com 42/157 9. Reinstall T1,T2,T2A,T2B sensor plug and electronic 10. The evaporator is assembled in place. expansion valve(EEV) and tie up the sensor wires. Note: The wire body needs to pass through the wire groove from the drain pan and be stuck on the hook of the drain pan.
  • Page 43 SDi Decades Extreme Service Manual www.ecoer.com 43/157 14. Reinstall the filter and filter cover plate. 15. Connect the pipes. 16. Install the drainage pipes. 5.3.4 Install the Electric Auxiliary Heat Module Accessories Name Shape Quantity Manual Foam gasket Screws Silicone breaker cover...
  • Page 44 SDi Decades Extreme Service Manual www.ecoer.com 44/157 Electric Auxiliary Heat Module installation and wiring operation： 1. Remove the upper cover and use professional tools to remove the knock-out holes of the upper cover. 2. Remove the terminal block and power cord, loosen the screws, and remove the electric auxiliary heating cover.
  • Page 45 SDi Decades Extreme Service Manual www.ecoer.com 45/157 4. Tighten the mounting screws. screws 5. Wiring according to the wiring nameplate. 6.Tape the wiring diagram to the inside cover wiring is completed for future reference and maintenance. 7. Install the upper cover.
  • Page 46 SDi Decades Extreme Service Manual www.ecoer.com 46/157 Auxiliary Heater Electrical Data CIRCUIT 1 CIRCUIT 2 CIRCUIT 3 Internal Heater part Heater Circuit Heater Heater Heater MOCP (2) MOCP MOCP Protection MCA (1) MCA (1) MCA (1) Amps Amps Amps EAH- Ckt Bkr 28.8/32.0...
  • Page 47 SDi Decades Extreme Service Manual www.ecoer.com 47/157 5.4.3 Install Outdoor Unit Fix the outdoor unit with anchor bolts(M10) >60cm / 23.6” Fix with bolts Caution Since the gravity center of the unit is not at its physical center, so please be careful when lifting it with a sling.
  • Page 48 SDi Decades Extreme Service Manual www.ecoer.com 48/157 For horizontal drainage pipe (The following table is for reference) Allowable Reference value of maximum water flowrate (l/h) Remark PVC pipe inner diameter of pipe Slope Slope (mm) 1/50 1/100 PVC25 For branch pipe...
  • Page 49 SDi Decades Extreme Service Manual www.ecoer.com 49/157 • The orrect installation will not cause converse water flow and the slope of the branch pipes can be adjusted freely. • The false installation will cause converse water flow and the slope of the branch pipe can not be ad- justed.
  • Page 50 SDi Decades Extreme Service Manual www.ecoer.com 50/157 5.6 Refrigerant Pipe Installation 5.6.1 Maximum length and drop height Ensure that the length of the refrigerant pipe, the number of bends, and the drop height between the indoor and outdoor units meets the requirements shown in the following table.
  • Page 51 SDi Decades Extreme Service Manual www.ecoer.com 51/157 5. Insulate the copper pipe • Before test operation, the joint parts should not be heat insulated. 6. Flare the pipe • Insert a flare nut into the pipe before flaring the pipe •...
  • Page 52 SDi Decades Extreme Service Manual www.ecoer.com 52/157 5.7 Vacuum Drying and Leakage Checking 5.7.1 Purpose of vacuum drying • Eliminating moisture in system to prevent the phenomena of ice-blockage and copper oxidation. Ice-blockage shall cause abnormal operation of system, while copper oxide shall damage compressor.
  • Page 53 SDi Decades Extreme Service Manual www.ecoer.com 53/157 5.8 Additional Refrigerant Charge • After the vacuum drying process is carried out, the additional refrigerant charge process need to be performed. • The outdoor unit is factory charged with refrigerant. The additional refrigerant charge volume is decided by the diameter and length of the liquid pipe between indoor and outdoor unit.
  • Page 54 SDi Decades Extreme Service Manual www.ecoer.com 54/157 4. Installation highlights of insulation construction • Gas pipe and liquid pipe shall be insulated separately, if the gas pipe and liquid pipe were insulated together; it will decrease the performance of air conditioner.
  • Page 55 SDi Decades Extreme Service Manual www.ecoer.com 55/157 5.10 Engineering of Electrical Wring 5.10.1 Highlights of electrical wiring installation • All field wiring construction should be finished by qualified electrician. • Air conditioning equipment should be grounded according to the local electrical regulations.
  • Page 56 SDi Decades Extreme Service Manual www.ecoer.com 56/157 Connection method B: To use a 24V thermostat, you need to refer to the following wiring: Indoor unit R C G Y1 Y2 B W W1W2 E DH L S1 S2 R C Y1 Y2 B W D L...
  • Page 57 SDi Decades Extreme Service Manual www.ecoer.com 57/157 • Wiring for 1H and 1C thermostat • Wiring for 1H and 1C thermostat THERMOSTAT THERMOSTAT Y1 Y2 B W D DH R G Y1 B W W1 W2 E DH R G Y1...
  • Page 58 SDi Decades Extreme Service Manual www.ecoer.com 58/157 4. Dehumidification control wiring HUMIDISTAT Dehumidification control requires indirect humidifier at DH and R. Set S4-2 as OFF. When the humidity rises and exceeds the set value of the humidifier, the 24V signal of DH changes to 0V, the cooling system starts the dehumidification operation, and the air volume drops to 8 0 % of the nominal cooling air volume.
  • Page 59 SDi Decades Extreme Service Manual www.ecoer.com 59/157 5.11 Test Operation 5.11.1 The test operation must be carried out after the entire installation has been completed. 5.11.2 Please confirm the following points before the test operation. • The indoor unit and outdoor unit are installed properly.

  • Page 60: Maintenance

    SDi Decades Extreme Service Manual www.ecoer.com 60/157 6. Maintenance 6.1 First Time Installation Check Air and moisture trapped in the refrigerant system affects the performance of the air conditioner by: • Increasing pressure in the system. • Increasing the operating current.
  • Page 61 SDi Decades Extreme Service Manual www.ecoer.com 61/157 Procedure: Tighten the flare nuts of the indoor and outdoor units, and confirm that both the 2- and 3-way valves are closed. Connect the charge hose with the push pin of Handle Lo to the gas service port of the 3-way valve.
  • Page 62 SDi Decades Extreme Service Manual www.ecoer.com 62/157 6.2 Refrigerant Recharge Procedure: Close both 2- and 3-way valves. Slightly connect the Handle Lo charge hose to the 3-way service port. Connect the charge hose to the valve at the bottom of the cylinder.
  • Page 63 SDi Decades Extreme Service Manual www.ecoer.com 63/157 6.3 Re-Installation 6.3.1 Indoor Unit Collecting the refrigerant into the outdoor unit Procedure: Confirm that the 2- and 3-way valves are opened. Connect the charge hose with the push pin of Handle Lo to the 3-way valve’s gas service port.
  • Page 64 SDi Decades Extreme Service Manual www.ecoer.com 64/157 Air purging with vacuum pump Procedure: Tighten the flare nuts of the indoor and outdoor units, and confirm that both the 2- and 3-way valves are closed. Connect the charge hose with the push pin of Handle Lo to the gas service port of the 3-way valve.
  • Page 65 SDi Decades Extreme Service Manual www.ecoer.com 65/157 6.3.2 Outdoor Unit Evacuation for the whole system Procedure: Confirm that the 2- and 3-way valves are opened. Connect the vacuum pump to the 3-way valve’s service port. Evacuate the system for approximately one hour. Confirm that the compound meter indicates -0.1 MPa (-14.5Psi).
  • Page 66 SDi Decades Extreme Service Manual www.ecoer.com 66/157 Refrigerant charging Procedure: Close both 2- and 3-way valves. Slightly connect the Handle Lo charge hose to the 3-way service port. Connect the charge hose to the valve at the bottom of the cylinder.

  • Page 67: Product Features

    SDi Decades Extreme Service Manual www.ecoer.com 67/157 7. Product Features 7.1 Display Function Mode Priority Y/Y2 W W1 W2 E/AUX DH/DS/BK Display Shut down Cooling Cooling 2 Dehumidification 1 Dehumidification 2 Heating 1 Heating 2 Heating 2 Electric heating 1...
  • Page 68 SDi Decades Extreme Service Manual www.ecoer.com 68/157 7.2 Safety Features Compressor three-minute delay at restart Compressor functions are delayed for up to ten seconds upon the first startup of the unit, and are delayed for up to three minutes upon subsequent unit restarts.
  • Page 69 SDi Decades Extreme Service Manual www.ecoer.com 69/157 7.3.3 Cooling Mode 7.3.4.1 Compressor Control • If the following conditions are satisfied, the compressor stops operation. • When the frequency value calculated through GA algorithm is negative compensation. • T1 is less than or equal to (Tsc-CDIFTEMP). CDIFTEMP is a parameter of EEPROM.
  • Page 70 SDi Decades Extreme Service Manual www.ecoer.com 70/157 7.3.4 Heating Mode(Heat Pump Units) 7.3.4.1 Compressor Control • If the following conditions are satisfied, the compressor stops operation. • When the frequency value calculated through GA algorithm is negative compensation. • T1 is greater than or equal to (Tsc+HDIFTEMP2). HDIFTEMP2 is a parameter of EEPROM.
  • Page 71 SDi Decades Extreme Service Manual www.ecoer.com 71/157 7.3.4.3 Outdoor Fan Control: • The outdoor unit will be run at different fan speed according to T4 and compressor frequency. • For different outdoor units, the fan speeds are different. 7.3.4.4 Defrosting mode •...
  • Page 72 SDi Decades Extreme Service Manual www.ecoer.com 72/157 7.3.7 Forced Operation Function Press the AUTO/COOL button, the AC will run as below sequence: • Forced cooling mode: The compressor and outdoor fan continue to run and the indoor fan runs at fixed speed. After running for 30 minutes, the AC will switch to auto mode with a preset temperature of 76℉.
  • Page 73 SDi Decades Extreme Service Manual www.ecoer.com 73/157 7.4 Remote Controller Functions 7.4.1 LCD Wired Remote Controller (ECT01) i) Features and functions Features: • LCD display. • Malfunction code display: it can display the error code, helpful for service. • 4-way wire layout design, no raised part at backside, more convenient to place the wires and install the device.
  • Page 74 SDi Decades Extreme Service Manual www.ecoer.com 74/157 ii) LCD Screen ℃/℉ MODE display Displays Temperature display the current Room temperature display mode,including: Lock display Relative humidity display Wireless control feature display Follow me feature display Breeze away display Delay off display...
  • Page 75 SDi Decades Extreme Service Manual www.ecoer.com 75/157 iii) Installation • Dimensions 20mm 120mm 46mm 60mm 1) Connection Wire with the indoor unit: 60mm Wiring hole HA HB • 1: Indoor Unit. • 2: Notch the part for the wiring to pass through with a nipper tool.
  • Page 76 SDi Decades Extreme Service Manual www.ecoer.com 76/157 For some models: The wired controller connects to terminal board, terminal board connects to main control board. Terminal board Main control board CN40 ENC1 HA HB HA HB Wired controller Putty Trap Putty...

  • Page 77: Troubleshooting

    SDi Decades Extreme Service Manual www.ecoer.com 77/157 8. Troubleshooting 8.1 Safety Caution WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. While checking indoor/outdoor PCB, please equip oneself with antistatic gloves or wrist strap to avoid damage to the board.

  • Page 78: General Troubleshooting

    SDi Decades Extreme Service Manual www.ecoer.com 78/157 8.2 General Troubleshooting 8.2.1 Error Display (Indoor Unit) When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer lamp may turn on or begin flashing, and an error code will be displayed. These error codes are described in...
  • Page 79 SDi Decades Extreme Service Manual www.ecoer.com 79/157 PC03 Low pressure protection Outdoor unit malfunction EC0d PC0L Low ambient temperature protection FL09 Mismatch between the new and old platforms For other errors: The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a temperature reading.
  • Page 80 SDi Decades Extreme Service Manual www.ecoer.com 80/157 8.2.3 Error Display (Outdoor Unit) Display Malfunction or Protection Page EC51 Outdoor EEPROM malfunction EL01 Indoor / outdoor units communication error EL16 Communication malfunction between adapter board and outdoor main board PC00 IPM module protection...

  • Page 81: Outdoor Unit Point Check Function

    SDi Decades Extreme Service Manual www.ecoer.com 81/157 8.3 Outdoor Unit Point Check Function • A check switch is included on the outdoor PCB. • Push SW1 to check the unit’s status while running. The digital display shows the following codes each time the SW1 is pushed.
  • Page 82 SDi Decades Extreme Service Manual www.ecoer.com 82/157 Frequency limit caused by Bit7 IGBT radiator Bit6 Reserved The display value is Bit5 Reserved a hex number. For example, the digital Frequency limit caused by low display show 2A, then Bit4 temperature of T2.(LH00) Bit5=1, Bit3=1, and Bit1=1.

  • Page 83: Information Inquiry

    SDi Decades Extreme Service Manual www.ecoer.com 83/157 8.4 Information Inquiry • To enter engineer mode, in power-on or standby mode, and in non-locked state, press the key combination “ON/OFF + Air Speed” for 7s: • After entering the engineer mode, the remote control will display icons of “Auto, Cool, Dry, Heat”, and the Battery icon;...
  • Page 84 SDi Decades Extreme Service Manual www.ecoer.com 84/157 press "On/Off" for 2s to enter Twins Selector, the code displayed is “Ch”, Compressor press "OK" to send the Query Twins Selector code; press the Up/Down Running key to select, 0 indicates that there is no Twins, 1 indicates the host, and Frequency 2 indicates the slave.
  • Page 85 SDi Decades Extreme Service Manual www.ecoer.com 85/157 press "On/Off" for 2s to enter the Cooling Temperature Compensation Value Settings, the code displayed is “Ch”, then press "OK" to send the Query Cooling Temperature Compensation Value code; press the Up/Down key to select the cooling temperature compensation value, then press "OK";...
  • Page 86 SDi Decades Extreme Service Manual www.ecoer.com 86/157 Error code of engineer mode Display Error Information EH00 Indoor unit EEPROM parameter error ELO1 Indoor / outdoor unit communication error EL16 Communication malfunction between adapter board and outdoor main board EH03 The indoor fan speed is operating outside of the normal range...

  • Page 87: Error Diagnosis And Troubleshooting Without Error Code

    SDi Decades Extreme Service Manual www.ecoer.com 87/157 8.5 Error Diagnosis and Troubleshooting Without Error Code WARNING Be sure to turn off unit before any maintenance to prevent damage or injury. 8.5.1 Remote maintenance SUGGESTION: When troubles occur, please check the following points with customers before field maintenance.
  • Page 88 SDi Decades Extreme Service Manual www.ecoer.com 88/157 8.5.2 Field maintenance Problem Page Unit will not start 91-92 Compressor will not start but fans run 91-92 Compressor and condenser (outdoor) fan will not start 91-92 Evaporator (indoor) fan will not start...
  • Page 89 SDi Decades Extreme Service Manual www.ecoer.com 89/157 Refrigerant Circuit 1.Remote Maintenance Electrical Circuit Possible causes of trouble Unit will not start ☆ ☆ ☆ ☆ The power switch is on but fans will not start ☆ ☆ ☆ The temperature on the display board cannot be ☆...
  • Page 90 SDi Decades Extreme Service Manual www.ecoer.com 90/157 1.Remote Maintenance Others Possible causes of trouble Unit will not start The power switch is on but fans will not ☆ start The temperature on the display board cannot be set Unit is on but the wind is not cold(hot)
  • Page 91 SDi Decades Extreme Service Manual www.ecoer.com 91/157 2.Field Maintenance Refrigerant Circuit Others Possible causes of trouble Unit will not start Compressor will not start but fans run ☆ Compressor and condenser (outdoor) fan will not start Evaporator (indoor) fan will not start...
  • Page 92 SDi Decades Extreme Service Manual www.ecoer.com 92/157 2.Field Maintenance Electrical Circuit Possible causes of trouble Unit will not start ☆ ☆ ☆ ☆ ☆ ☆ Compressor will not start but fans run ☆ ☆ ☆ ☆ ☆ Compressor and condenser (outdoor) ☆...

  • Page 93: Quick Maintenance By Error Code

    SDi Decades Extreme Service Manual www.ecoer.com 93/157 8.6 Quick Maintenance by Error Code If you do not have the time to test which specific parts are faulty, you can directly change the required parts according the error code. You can find the parts to replace by error code in the following table.
  • Page 94 SDi Decades Extreme Service Manual www.ecoer.com 94/157 Part requiring EL16 EH0b PC06 PC08/44/ 49 PC0A PC0F replacement Indoor PCB Outdoor PCB Outdoor fan motor T3 Sensor TP Sensor Pressure sensor Reactor Compressor IPM module board Data adapter board High pressure valve assy...

  • Page 95: Troubleshooting By Error Code

    SDi Decades Extreme Service Manual www.ecoer.com 95/157 8.7 Troubleshooting by Error Code 8.7.1 EH 00 / EC 51 (EEPROM Parameter Error Diagnosis and Solution) Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: •...
  • Page 96 SDi Decades Extreme Service Manual www.ecoer.com 96/157 8.7.2 EL 01 (Indoor and Outdoor Unit Communication Error Diagnosis and Solution) Description: Indoor unit can not communicate with outdoor unit Recommended parts to prepare: • Signal wires • Magnet ring • Indoor PCB •...
  • Page 97 SDi Decades Extreme Service Manual www.ecoer.com 97/157 S Communication: Power off, then restart the unit after 2 minutes. Does the error code Solved disappear? Correct the connectio Check the wiring connection or change wires between indoor and outdoor unit, are they good?
  • Page 98 SDi Decades Extreme Service Manual www.ecoer.com 98/157 Remarks: • Use a multimeter to test the DC voltage between 2 port(or S or L2 port) and 3 port(or N or S port) of outdoor unit. The red pin of multimeter connects with 2 port(or S or L2 port) while the black pin is for 3 port(or N or S port).
  • Page 99 SDi Decades Extreme Service Manual www.ecoer.com 99/157 8.7.3 EH 03 / EC 07 (Fan Speed Is Operating Outside of Normal Range)/EC 71(Over Current Failure of Outdoor DC Fan Motor)/ EC73(Zero-speed failure of outdoor DC fan motor) Diagnosis and Solution Description: When indoor / outdoor fan speed keeps too low or too high for a certain time, the unit stops operation and the LED displays the failure.
  • Page 100 SDi Decades Extreme Service Manual www.ecoer.com 100/157 Index: 1. Indoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1&pin2 of CN15, pin3 of CN34 in f a n motor connector.
  • Page 101 SDi Decades Extreme Service Manual www.ecoer.com 101/157 8.7.4 EH 60/EH 61/EH 62/ EH 65/ EC 53/EC 52/EC 54/EC 57/EC 50/EC 5C (Open Circuit or Short Circuit of Temperature Sensor Diagnosis and Solution) Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure.
  • Page 102 SDi Decades Extreme Service Manual www.ecoer.com 102/157 8.7.5 EL 0C (Refrigerant Leakage Detection Diagnosis and Solution) Description: Judging the abnormality of the refrigeration system according to the number of compressor stops and the changes in operating parameters caused by excessive exhaust temperature.
  • Page 103 SDi Decades Extreme Service Manual www.ecoer.com 103/157 8.7.6 EH 0E(Water-Level Alarm Malfunction Diagnosis and Solution) Description: If the sampling voltage is not 5V, the LED displays the failure code. Recommended parts to prepare: • Connection wires • Water level switch •...
  • Page 104 SDi Decades Extreme Service Manual www.ecoer.com 104/157 8.7.7 PC 00(IPM malfunction or IGBT over-strong current protection Diagnosis and Solution) Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the display LED shows “PC 00” and the AC turn off.
  • Page 105 SDi Decades Extreme Service Manual www.ecoer.com 105/157 8.7.8 PC 01(Over voltage or too low voltage protection)/PC 10(Outdoor unit low AC voltage protection)/PC 11(Outdoor unit main control board DC bus high voltage protection)/PC 12(Outdoor unit main control board DC bus high voltage protection/341...
  • Page 106 SDi Decades Extreme Service Manual www.ecoer.com 106/157 8.7.9 PC 04(Inverter compressor drive error Diagnosis and Solution) Description: An abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
  • Page 107 SDi Decades Extreme Service Manual www.ecoer.com 107/157 8.7.10 PC 03/PC 31(Low Pressure Protection Diagnosis and Solution) Description: If the sampling voltage is not 5V, the LED displays a failure code. Recommended parts to prepare: • Connection wires • Low pressure protector •...
  • Page 108 SDi Decades Extreme Service Manual www.ecoer.com 108/157 8.7.11 PC 02/LC 06(Top temperature protection of compressor or High temperature protection of IPM module diagnosis and solution) Description: For some models with overload protection, If the sampling voltage is not 5V, the LED will display the failure.
  • Page 109 SDi Decades Extreme Service Manual www.ecoer.com 109/157 Check the fastening screws on the PCB and IPM radiator. Replace the outdoor Are they fixed tightly? control PCB. Tighten the screws and apply silicon grease. 8.7.12 EC 0d(Outdoor unit malfunction Diagnosis and Solution) Description: The indoor unit detect the outdoor unit is error.
  • Page 110 SDi Decades Extreme Service Manual www.ecoer.com 110/157 8. 7.13 PC 40(Communication error between outdoor main PCB and IPM board diagnosis and solution) Description: The main PCB cannot detect the IPM board. Recommended parts to prepare: • Connection wires • IPM board •...
  • Page 111 SDi Decades Extreme Service Manual www.ecoer.com 111/157 8.7.14 PC 08(Current overload protection)/PC 44(Outdoor unit zero speed protection)/ PC 46(Compressor speed has been out of control)/PC 49(Compressor overcurrent failure) diagnosis and solution Description: An abnormal current rise is detected by checking the specified current detection circuit.
  • Page 112 SDi Decades Extreme Service Manual www.ecoer.com 112/157 Was the protection activated in standby? Is the power voltage is Restart the unit when the power normal? supply returns to normal Is outdoor terminal voltage Is the power wiring Reconnect the wired correctly? power wiring normal？...
  • Page 113 SDi Decades Extreme Service Manual www.ecoer.com 113/157 8.7.15 PC 0F PFC module protection diagnosis and solution) Description: When the voltage signal that IPM send to compressor drive chip is abnormal, the LED displays the failure code and the AC turns off.
  • Page 114 SDi Decades Extreme Service Manual www.ecoer.com 114/157 8.7.16 EC 72 (Lack phase failure of outdoor DC fan motor diagnosis and solution) Description: When the three-phase sampling current of the DC motor is abnormal, especially when the current of one or more phases is always small and almost 0, the LED displays the failure code.
  • Page 115 SDi Decades Extreme Service Manual www.ecoer.com 115/157 8.7.17 PC 43 (Outdoor compressor lack phase protection diagnosis and solution) Description: When the three-phase sampling current of the compressor is abnormal, especially when the current of one or more phases is always small and almost 0, the LED displays the failure code Recommended parts to prepare: •...
  • Page 116 SDi Decades Extreme Service Manual www.ecoer.com 116/157 8.7.18 PC 45 (Outdoor unit IR chip drive failure) diagnosis and solution Description: When the IR chip detects its own parameter error, the LED displays the failure code when power on. Recommended parts to prepare: •...
  • Page 117 SDi Decades Extreme Service Manual www.ecoer.com 117/157 8.7.20 EC55 (Outdoor IPM module temperature sensor fault) diagnosis and solution Description: If the sampling voltage is 0V or 5V, the LED displays the failure code. Recommended parts to prepare: • IPM module PCB •...
  • Page 118 SDi Decades Extreme Service Manual www.ecoer.com 118/157 8.7.21 PC 30 (High pressure protection diagnosis and solution) Description: Outdoor pressure switch cut off the system because high pressure is higher than 4.4 MPa Recommended parts to prepare: • Connection wires • Pressure switch •...
  • Page 119 SDi Decades Extreme Service Manual www.ecoer.com 119/157 High pressure protection Are the high pressure Connect high pressure switch switch and main control and main control board boar wired correctly? Is the high pressure protector broken? Method: Disconnect the plug. Measure the resistance of the...
  • Page 120 SDi Decades Extreme Service Manual www.ecoer.com 120/157 8.7.22 PC 0A (High temperature protection of condenser diagnosis and solution) Description: When the outdoor pipe temperature is more than 149℉ , the unit stops. It starts again only when the outdoor pipe temperature is less than 125℉ .
  • Page 121 SDi Decades Extreme Service Manual www.ecoer.com 121/157 8.7.23 PC 06 (Discharge temperature protection of compressor diagnosis and solution) Description: If the compressor discharge temperature exceeds a certain level for nine seconds, the compressor stops operation, the LED displays the failure code Recommended parts to prepare: •...
  • Page 122 SDi Decades Extreme Service Manual www.ecoer.com 122/157 8.7.24 EH 0b(Communication error between indoor two chips diagnosis and solution) Description: Indoor PCB main chip does not receive feedback from another chip. Recommended parts to prepare: • Indoor main board • Adapter board...
  • Page 123 SDi Decades Extreme Service Manual www.ecoer.com 123/157 8.7.25 EL 16(Communication malfunction between adapter board and outdoor main board diagnosis and solution) Description: The adapter PCB cannot detect the main control board. Recommended parts to prepare: • Connection wires • Adapter board •...
  • Page 124 SDi Decades Extreme Service Manual www.ecoer.com 124/157 8.7.27 PC 41(Outdoor compressor current sampling circuit failure diagnosis and solution) Description: Three-phase sampling offset voltage error, the static bias voltage is normally 2.5V Recommended parts to prepare: • Outdoor main PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later.

  • Page 125: Check Procedures

    SDi Decades Extreme Service Manual www.ecoer.com 125/157 8.8 Check Procedures 8.8.1 Temperature Sensor Check WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. Operate after compressor and coil have returned to normal temperature in case of injury.
  • Page 126 SDi Decades Extreme Service Manual www.ecoer.com 126/157 Resistance Value EAPQ420D1UMUA Blue-Red Blue-Black 0.37Ω Red-Black Note: The picture and the value are only for reference, actual condition and specific value may vary. 8.8.3 IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off.
  • Page 127 SDi Decades Extreme Service Manual www.ecoer.com 127/157 Digital tester Resistance value Digital tester Resistance value (+)Red (-)Black (+)Red (-)Black ∞ ∞ (Several MΩ) (Several MΩ) Note: The picture and the value are only for reference, actual condition and specific value may vary. Normal...
  • Page 128 SDi Decades Extreme Service Manual www.ecoer.com 128/157 8.8.4 4-way Valve Check 1. Power on, use a digital tester to measure the voltage, when the unit operates in cooling, it is 0V. When the unit operates in heating, it is about 230VAC.
  • Page 129 SDi Decades Extreme Service Manual www.ecoer.com 129/157 8.8.5 EEV Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Disconnect the connector from outdoor PCB. 2. Measure the resistance value of each winding using a multi-meter.

  • Page 130: Indoor Unit Disassembly

    SDi Decades Extreme Service Manual www.ecoer.com 130/157 9. Indoor Unit Disassembly-Air Handle 9.1 Electrical Parts (Antistatic gloves must be worn.) Procedure Illustration 1) Remove 2 screws of the upper cover Plate assembly and then remove the it. (see AHU_1) AHU_1 2) Remove 2 screws and unplug the plugs.
  • Page 131 SDi Decades Extreme Service Manual www.ecoer.com 131/157 Procedure Illustration 4) Release 2 fixing screws and 1earthing screw.(see AHU_3) 5) Unplug the plugs and then remove the main control board subassembly. (see AHU_3) AHU_3 6) Release 1 fixing screw of the data transfer module control board to remove it.
  • Page 132 SDi Decades Extreme Service Manual www.ecoer.com 132/157 9.2 Fan Motor and Fan Procedure Illustration 1) Remove 2 screws of fan assembly (see AHU_6) AHU_6 2) Take out the fan assembly (see AHU_7) AHU_7 Note: This section is for reference only. Actual unit appearance may vary.
  • Page 133 SDi Decades Extreme Service Manual www.ecoer.com 133/157 Procedure Illustration 3) Release 3 nuts fixing the fan motor and then take out the fan motor. (see AHU_8) AHU_8 4) Release the 1 nut fixing the fan and then take out the fan. (see AHU_9) AHU_9 Note: This section is for reference only.
  • Page 134 SDi Decades Extreme Service Manual www.ecoer.com 134/157 9.3 Evaporator Procedure Illustration 1) Remove the cover plate (see AHU_10) AHU_10 2) Remove 3 screws of cover plate assembly(below) (see AHU_11) AHU_11 Note: This section is for reference only. Actual unit appearance may vary.
  • Page 135 SDi Decades Extreme Service Manual www.ecoer.com 135/157 Procedure Illustration 3) Take out the evaporator(with water collector assembly). (see AHU_12) AHU_12 4) Remove 2 screws of water collector assembly.(see AHU_13) 5 ) Release evaporator and the water collector assembly. AHU_13 Note: This section is for reference only. Actual unit appearance may vary.
  • Page 136 SDi Decades Extreme Service Manual www.ecoer.com 136/157 9.4 Electric Auxiliary Heat Module (Optional) Procedure Illustration 1) Remove 2 screws of the upper cover Plate assembly and then remove the it. (see AHU_13) AHU_13 screws 2) Remove 3 fixing screws. (see...
  • Page 137 SDi Decades Extreme Service Manual www.ecoer.com 137/157 Procedure Illustration 3) Pull out the auxiliary heat module. (see AHU_15) 4) Pull out the wire connect to the fuse AHU_15 with needle-nose pliers(see AHU_16) Note: Qty of EAH-03B&EAH-05B is 1, Qty of EAH-08B&EAH-10B is 2, Qty of EAH-15B...

  • Page 138: Outdoor Unit Disassembly

    SDi Decades Extreme Service Manual www.ecoer.com 138/157 10. Outdoor Unit Disassembly-Air Handle 10.1 Outdoor Unit Table Outdoor Unit Model Panel Plate PCB Board ESCA16H-36 PCB Board 8 ESCA16H-36 PCB Board 8 Manufacturer reserves the right to change specifications or designs without notice.
  • Page 139 SDi Decades Extreme Service Manual www.ecoer.com 139/157 10.2 Outdoor Unit Disassembly 10.2.1 Panel Plate Procedure Illustration 1) Turn off the air conditioner and the power breaker. 2）Remove the screws of the big handle and then remove the big handle (2 screws) (see E30_1).
  • Page 140 SDi Decades Extreme Service Manual www.ecoer.com 140/157 Procedure Illustration 5) Remove the screws of the front right panel and then remove the front right panel (2 screws) (see E30_4). E30_4 Note: This section is for reference only. Actual unit appearance may vary.
  • Page 141 SDi Decades Extreme Service Manual www.ecoer.com 141/157 Procedure Illustration 5) Remove the screws of the front panel and then remove the front panel (7 screws) (see E30_5). E30_5 6) Remove the screws of the right panel and then remove the right panel (10 screws) (see E30_6).
  • Page 142 SDi Decades Extreme Service Manual www.ecoer.com 142/157 10.2.2 Electrical Parts WARING: Antistatic gloves must be worn when you disassemble the electronic box. Note: Remove the air outlet grille(refer to 10.2.1 Panel Plate) before disassembling electrical parts. PCB board Procedure Illustration 1) Remove 2 screws to disconnect the power supply wires.
  • Page 143 SDi Decades Extreme Service Manual www.ecoer.com 143/157 PCB board Procedure Illustration 1) Remove 2 screws to disconnect the power supply wires. (see ODU_ PCB_2) 2) Remove 3 screws to disconnect the wires connected to the compressor. (see ODU_ PCB_2) 3) Remove 3 screws to remove the radiator.(see ODU_ PCB_2)
  • Page 144 SDi Decades Extreme Service Manual www.ecoer.com 144/157 PCB board Procedure Illustration 1) Remove the 1 screw and disconnect the wires and then remove the key board.(see ODU_ PCB_4) ODU_ PCB_4 Note: This section is for reference only. Actual unit appearance may vary.
  • Page 145 SDi Decades Extreme Service Manual www.ecoer.com 145/157 10.2.3 Fan Assembly Note: Remove the panel plate (refer to 10.2.1 Panel Plate) before disassembling fan. Procedure Illustration 1) Remove the nut securing the fan with a spanner (see ODU_ FAN_1&2). 2) Remove the fan.
  • Page 146 SDi Decades Extreme Service Manual www.ecoer.com 146/157 10.2.4 Fan Motor Note: Remove the panel plate and the connection of fan motor on PCB (refer to 10.2.1 Panel Plate and 10.2.2 Electrical parts) before disassembling fan motor. Procedure Illustration 3) Remove the fixing screws of the fan motor (4 screws) (see ODU_MOTOR_1).
  • Page 147 SDi Decades Extreme Service Manual www.ecoer.com 147/157 10.2.5 Sound Blanket Note: Remove the panel plate (refer to 10.2.1 Panel plate) before disassembling sound blanket. Procedure Illustration 1) Remove the sound blanket (side and top) (see ODU_BLANKET_1). Sound Blanket(top) (Applicable to models with blanket)
  • Page 148 SDi Decades Extreme Service Manual www.ecoer.com 148/157 10.2.6 Four-way valve(for heat pump models) WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. Note: Remove the panel plate, connection of four-way valve on PCB (refer to 10.2.1 Panel plate and 10.2.2 Electrical parts) before disassembling sound blanket.
  • Page 149 SDi Decades Extreme Service Manual www.ecoer.com 149/157 10.2.7 Compressor WARNING: Evacuate the system and confirm that there is no refrigerant left in the system before removing the four-way valve and the compressor. (For R32 & R290, you should evacuate the system with the vacuum pump;...
  • Page 150 SDi Decades Extreme Service Manual www.ecoer.com 150/157 10.2.7 Compressor Procedure Illustration 3) Remove the hex nuts and washers securing the compressor, located on the bottom plate (see ODU_COMP_3). ODU_COMP_3 Suction Pipe 4) Heat up the brazed parts and then remove the the discharge pipe and the suction pipe (see ODU_COMP_4).

  • Page 151: Appendix

    Appendix Contents Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (℃ – K) Temperature Sensor Resistance Value Table for TP (for some units)(℃ --K) iii) Pressure On Service Port...

  • Page 152: I) Temperature Sensor Resistance Value Table For T1,T2,T3 And T4 (℃ - K)

    SDi Decades Extreme Service Manual www.ecoer.com 152/157 i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (℃ – K) ℉ K Ohm ℉ K Ohm ℉ K Ohm ℉ K Ohm ℃ ℃ ℃ ℃ 115.266 12.6431 2.35774 0.62973 108.146...

  • Page 153: Ii) Temperature Sensor Resistance Value Table For Tp(For Some Units) (℃ - K)

    SDi Decades Extreme Service Manual www.ecoer.com 153/157 ii) Temperature Sensor Resistance Value Table for TP(for some units) (℃ --K) ℉ K Ohm ℉ K Ohm ℉ K Ohm ℉ K Ohm ℃ ℃ ℃ ℃ K Ohm K Ohm K Ohm K Ohm ℃...

  • Page 154: Iii) Pressure On Service Port

    SDi Decades Extreme Service Manual www.ecoer.com 154/157 iii) Pressure On Service Port Cooling chart(R410A): ODU(DB) ℉(℃) (-9.44) (7.22) (23.89) (29.44) (40.56) (46.11) (48.89) (-17) (-15) (35) IDU(DB/WB) 70/59 (21.11/15) 10.1 10.6 75/63 (23.89/17.22) 10.7 11.2 80/67 (26.67/19.44) 11.2 11.9 90/73 (32.22/22.78) 10.5...
  • Page 155 SDi Decades Extreme Service Manual www.ecoer.com 155/157 Heating chart(R410A): ODU(DB/WB) 27/23 17/13 (-8.33/ 0/-2 57/53 47/43 37/33 -17/-18 ℉(℃) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) -10.56) (-17/-19) (-27/-28) IDU(DB) 55(12.78) 30.3 28.5 25.3 22.8 20.8 18.5 16.5 65(18.33) 32.5 30.0 26.6 25.4 23.3...
  • Page 156 SDi Decades Extreme Service Manual www.ecoer.com 156/157 System Pressure Table-R410A Pressure Temperature Pressure Temperature ℃ ℉ ℃ ℉ 14.5 -51.623 -60.921 2350 23.5 340.75 38.817 101.871 21.75 -43.327 -45.989 2400 39.68 103.424 -36.992 -34.586 2450 24.5 355.25 40.531 104.956 36.25 -31.795...
  • Page 157 SDi Decades Extreme Service Manual www.ecoer.com 157/157 ©2023 ECOER INC. 43671 Trade Center Place, Suite 100 Dulles, VA 20166 USA Tel: 703-348-2538 www.ecoer.com Manufacturer reserves the right to change specifications or designs without notice. May. 2023...

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