Ecoer ESI Series Service Manual
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Ecoer ESI Series Service Manual

Unitary system
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ESI (Ultra) Service Manual
ESI (Ultra) R-410A
Unitary Service Manual
Contents
1. General Information ----------------------------- 2
2. ESI (Ultra) Unitary System ---------------------- 3
2.1 Refrigerant Circuit ------------------------------ 3
2.2 Function and Control -------------------------- 7
2.3 Field Setting ------------------------------------- 17
3. Troubleshooting ---------------------------------- 25
3.1 Problems without Codes --------------------- 25
3.2 Error Codes list --------------------------------- 35
4. Parts List -------------------------------------------- 61
5. Appendix -------------------------------------------- 63
5.1 Sensor Characteristics -------------------------- 63
5.2 Wiring Diagram -------------------------------- 67
All phases of this installation must comply with National, State and Local Codes.
These instructions do not cover all variations in systems or provide for every possible contingency to
IMPORTANT
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.
1/68
www.ecoer.com
10.2019

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  • Page 1: Table Of Contents

    ESI (Ultra) Service Manual www.ecoer.com 1/68 ESI (Ultra) R-410A Unitary Service Manual Contents 1. General Information ----------------------------- 2 2. ESI (Ultra) Unitary System ---------------------- 3 2.1 Refrigerant Circuit ------------------------------ 3 2.2 Function and Control -------------------------- 7 2.3 Field Setting ------------------------------------- 17 3.

  • Page 2: General Information

    ESI (Ultra) Service Manual www.ecoer.com 2/68 1 General Information 4860 Unit Brand E: Ecoer Product Series OD: Outdoor Condensing Unit Model Letters A: 208/230V-1Ph-60Hz SEER 18: 18SEER Series Type H: Heat Pump C: AC only Capacity 2436: up to 3Ton...

  • Page 3: Esi (Ultra) Unitary System

    ESI (Ultra) Service Manual www.ecoer.com 3/68 2 ESI (Ultra) Unitary System 2.1 Refrigerant Circuit 2.1.1 Functional Parts Layout of Condensing Units EODA18H-2436 High Pressure Low Pressure DC Motor (FAN) Sensor (HP) Sensor (LP) Fan Blades Inductance Noise Filter Heat Exchanger...
  • Page 4 ESI (Ultra) Service Manual www.ecoer.com 4/68 EODA18H-4860 High Pressure Low Pressure Sensor (HP) Sensor (LP) DC Motor (FAN) Heat Fan Blades Exchanger Inductance Noise Filter Main Control Board (PCB) Accumulator (ACC) Electronic Expansion Lower Side Plate Gauge Port Reversing Valve (ST1)
  • Page 5 ESI (Ultra) Service Manual www.ecoer.com 5/68 2.1.2 Major Components Functions and Refrigerant Circuits Diagram Liquid Service Valve Heat Exchanger Gas Service Valve Gauge Port Adjusts refrigerant flow rate by changing the compressor speed (RPS) Name Symbol Function Inverter compressor based on objective pressure.
  • Page 6 ESI (Ultra) Service Manual www.ecoer.com 6/68 2.1.3 Refrigerant Flow of Each Operation Mode Cooling Operation (including defrost operation and cooling oil return) Liquid Service Valve Indoor Coil Heat Exchanger Gas Service Valve Gauge Port Strainer High pressure Gas High pressure Liquid Low pressure Gas Low pressure Mix.

  • Page 7: Function And Control

    ESI (Ultra) Service Manual www.ecoer.com 7/68 2.2 Function and Control 2.2.1 Operation Mode After 1 minute Operation in stop mode Thermostat ON (Y=ON) • Thermostat OFF Pressure equalizing Restart standby (Y=OFF) prior to start-up (compressor stops) • O signal change MAX.
  • Page 8 ESI (Ultra) Service Manual www.ecoer.com 8/68 2.2.2 Basic control 2.2.2.1 Normal control Input Cooling control (including Heating control (including Actuator Apply Compressor PI control to Apply Compressor PI control to Signal cooling oil return) heating oil return) Compressor (INV) maintain Tes...
  • Page 9 AUTO charge mode locks the compressor speed in cooling. The LED will display the refrigerant coefficient if both the liquid line sub-cooling (SC) and compressor suction superheat (SH) of ESI system are proper. To keep the best Ecoer Smart Inverter (ESI) systems’ performance and reliability, the following requirements should be followed in cooling.
  • Page 10 ESI (Ultra) Service Manual www.ecoer.com 10/68 Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 11 ESI (Ultra) Service Manual www.ecoer.com 11/68 2.2.2.4 Compressor control Standby PI control MAX 6 minutes for pressure Depending on the load of the space. equalization Directive control Start-up control Pressure differential control Fixed speed MAX time (cooling) ≤ 10 minutes •...
  • Page 12 ESI (Ultra) Service Manual www.ecoer.com 12/68 STEP STEP STEP STEP STEP Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 13 ESI (Ultra) Service Manual www.ecoer.com 13/68 2.2.2.6 Electronic expansion valve (EEV) control Standby after getting start signal 25~50゜F PI control Cooling: 360pls→480pls • Cooling: 480pls Heating: 360pls→0pls Heating: Depending on the compressor • • discharge superheat (DSH). *NOTE • Directive control...
  • Page 14 5Ton ESI (Ultra) Service Manual www.ecoer.com 14/68 Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 15 ESI (Ultra) Service Manual www.ecoer.com 12/68 2.2.3. Protection controls High pressure (HP) protection control is used to prevent extremely high pressures in the system and 2.2.3.1 High pressure protection control protect the compressor. Normal operation (Upper limit compressor step = Max. step) HP≥C...
  • Page 16 ESI (Ultra) Service Manual www.ecoer.com 13/68 Low pressure (LP) protection control in cooling is used to protect compressor against the transient 2.2.3.2 Low pressure protection control in cooling mode decrease of low pressure. Normal operation (Upper limit compressor step = Max. step) LP<C...
  • Page 17 ESI (Ultra) Service Manual www.ecoer.com 14/68 This discharge temperature (TD) protection control is used to protect the compressor internal 2.2.3.3 Discharge temperature protection control temperature against a malfunction or transient increase of discharge pipe temperature. Normal operation (Upper limit compressor step = Max. step) TD<D...
  • Page 18 ESI (Ultra) Service Manual www.ecoer.com 15/68 Inverter module temperature (TF) protection control is performed to prevent tripping due to an 2.2.3.4 INV Module temperature protection control abnormal increase in temperature. Normal operation (Upper limit compressor step = Max. step) TF≥C TF<D...
  • Page 19 ESI (Ultra) Service Manual www.ecoer.com 16/68 This control is performed to prevent tripping due to an abnormal transient compressor current (IA). 2.2.3.5 Compressor over-current protection control Normal operation (Upper limit compressor step = Max. step) IA≥C IA<D IA<D Upper limit compressor step = Current step IA≥B...

  • Page 20: Field Setting

    ESI (Ultra) Service Manual www.ecoer.com 17/68 2.3 Field Setting 2.3.1 Default display LED on main control board can display the operating status of outdoor unit (ODU). 7 segment display instructions SEG1 SEG2 SEG3 SEG1: Normally blank, but it displays codes “1~9” accordingly if there is damaged sensor and demand control requirement.
  • Page 21 ESI (Ultra) Service Manual www.ecoer.com 18/68 Modes list (SEG3 Display) SEG1 SEG2 SEG3 Stop or standby without running signal (Y=OFF) SEG1 SEG2 SEG3 Wait to start-up after receiving running signal (Y=ON) (6 minutes for pressure equalization to restart) SEG1 SEG2...
  • Page 22 ESI (Ultra) Service Manual www.ecoer.com 19/68 2.3.2 Setting by dip switches Condensing units’ functions can be applied by dipping switch and pressing buttons. SW1 dip switch Description Reserved NO ． Setting item Status Content 2 or 4 Ton Capacity selection...
  • Page 23 ESI (Ultra) Service Manual www.ecoer.com 20/68 Press BS1 once Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 24 ESI (Ultra) Service Manual www.ecoer.com 21/68 Default mode (Spot check) System states can be showed on the 7 segments display (LED) of outdoor unit. Press BS3 button to get code number and corresponding detailed information with an interval of one second.
  • Page 25 122ºF in heating mode. 3. Contact Ecoer Service Team to update software online if the units produced before April, 2019. 4. Reduce 10% heating time for heavy snow area, increase 10% heating time for light snow area.
  • Page 26 ESI (Ultra) Service Manual www.ecoer.com 22/68 Example for mode choice (n00) setting Step1 Step2 Step3 Press and hold BS1 for 5 Press BS2 to select item seconds. (n00 for this case). SEG1 SEG2 SEG3 SEG1 SEG2 SEG3 SEG1 SEG2 SEG3 n00=0, Normal mode./ n00=1, Dry mode./ n00=2, High capacity mode.
  • Page 27 ESI (Ultra) Service Manual www.ecoer.com 23/68 02 = 0, n03 = 1 Outdoor unit W terminal outputs 24VAC when TA< 30 F. ° Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 28 ESI (Ultra) Service Manual www.ecoer.com 24/68 Illustration for n05 ~ 07 setting Noise of silent mode is about 3 dB lower than normal mode. Noise of super silent mode is about 6 dB lower than normal mode. Night time setting Night time setting Silent mode setting.
  • Page 29 ESI (Ultra) Service Manual www.ecoer.com 24/68 Query Setting mode Press BS1 button once to query the current special setting, or check it on Ecoer Smart Service Pro App. SEG1 SEG2 SEG3 Blinking Press buttons BS1: Menu or back button BS2: UP button BS3: Spot check and confirm button Remarks: Press or tip any directions are valid.
  • Page 30 ESI (Ultra) Service Manual www.ecoer.com 25/68 Press BS3 to Step 2 interface Press BS1 to return. for other setting check. SEG1 SEG2 SEG3 SEG1 SEG2 SEG3 Manufacturer reserves the right to change specifications or designs without notice. 10.2019...

  • Page 31: Troubleshooting

    2: TA<40°F (24V output) THERMOSTAT 3: TA<-3°F (24V output) 4: OFF (No 24V output) ONLY AVAILABLE TO ECOER THERMOSTAT WITH EAHATN-XX AIR HANDLER NOTES: 1. Be sure power supply agrees with equipment nameplate. 2. Power wiring and grounding of equipment must comply with local codes.
  • Page 32 ESI (Ultra) Service Manual www.ecoer.com 26/68 No Display The unit energized but the digital tube shows nothing No display on main control board even though the unit has been powered ON. Error definition: Damaged noise filter Possible causes: Damaged inductance ...
  • Page 33 ESI (Ultra) Service Manual www.ecoer.com 27/68 Cool Only: Ecoer variable speed air conditioner (Dip ODU SW1-3 to ON) matches with fan coil. Other Brand Thermostat Optional SW1-3 ON: AC SW1-3 OFF: HP Ecoer Air Conditioner Other Brand Fan Coil Thermostat 1H/1C: Ecoer variable speed heat pump matches with fan coil.
  • Page 34 ESI (Ultra) Service Manual www.ecoer.com 28/68 2H/1C: Ecoer variable speed heat pump matches with fan coil. Other Brand Thermostat Optional Ecoer Condensing Unit (Heat Pump) Other Brand Fan Coil Thermostat 3H/1C: Ecoer variable speed heat pump matches with fan coil.
  • Page 35 ESI (Ultra) Service Manual www.ecoer.com 29/68 1H/1C: Ecoer variable speed air conditioner (Dip ODU SW1-3 to ON) matches with and coil. Other Brand Thermostat furnace Optional SW1-3 ON: AC SW1-3 OFF: HP Ecoer Air Conditioner Other Brand Furnace Thermostat 2H/2C: Ecoer variable speed air conditioner (Dip ODU SW1-3 to ON) matches with and coil.
  • Page 36 ESI (Ultra) Service Manual www.ecoer.com 30/68 2H/1C: Ecoer variable speed heat pump matches with furnace. Other Brand Thermostat Optional Ecoer Condensing Unit (Heat Pump) Other Brand Furnace Thermostat 3H/2C: Ecoer variable speed heat pump matches with furnace. Other Brand Thermostat...
  • Page 37 Ecoer Air Condtioner EST01 Wi-Fi Thermostat G Series Air Handler or Other Brand Fan Coil Ecoer variable speed air conditioner matches with gas or oil furnace. Ecoer Thermostat (EST01) Type 2 Cool Only + W2 output 1H/1C Optional SW1-3 ON: AC...
  • Page 38 ESI (Ultra) Service Manual www.ecoer.com 32/68 Furnace Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 39 Ecoer Condensing Unit (Heat Pump) EST01 Wi-Fi Thermostat G Series Air Handler or Other Brand Fan Coil Ecoer variable speed heat pump matches with fan coil. Ecoer Thermostat (EST01) Type 8 1H/1C with constant indoor fan speed Optional Ecoer Condensing Unit...
  • Page 40 ESI (Ultra) Service Manual www.ecoer.com 34/68 G Series Air Handler or Other Brand Fan Coil Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 41 (Heat Pump) EST01 Wi-Fi Thermostat E Series Air Handler (Factory default) Ecoer variable speed heat pump matches with fan coil for 2 stage heating Ecoer Thermostat (EST01) Type 10 2H/1C with constant indoor fan speed Optional Ecoer Condensing Unit (Heat Pump)
  • Page 42 ESI (Ultra) Service Manual www.ecoer.com 36/68 G Series Air Handler or Other Brand Fan Coil Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 43 ESI (Ultra) Service Manual www.ecoer.com 37/68 Ecoer variable speed heat pump matches with E series air handler and electric heat (Duel-fuel). Ecoer Thermostat (EST01) Type 11 2H/2C with two-stage fan control (G/G2) in cooling Optional Ecoer Condensing Unit (Heat Pump)
  • Page 44 ESI (Ultra) Service Manual www.ecoer.com 38/68 E Series Air Handler Manufacturer reserves the right to change specifications or designs without notice. 10.2019...

  • Page 45: Error Codes List

    ESI (Ultra) Service Manual www.ecoer.com 35/68 Past error codes can be inquired by BS3 button, and viewed on Ecoer Smart Service Pro App. 3.2 Error Codes List Code Description Legend Page High pressure protection System locks up when P1 has occurred six times in 3 hours.
  • Page 46 ESI (Ultra) Service Manual www.ecoer.com 36/68 Display High pressure protection P1: The detected high pressure is no less than 566psig. Error definition: E1: System locks up when P1 has occurred six times within 3 hours. Service valves are closed Possible causes: The system has been severely over-charged ...
  • Page 47 ESI (Ultra) Service Manual www.ecoer.com 37/68 Display Low pressure protection in cooling mode P2: The detected low pressure in cooling mode is less than 24.5psig. Error definition: E2: System locks up when P2 has occurred six times within 3 hours.
  • Page 48 ESI (Ultra) Service Manual www.ecoer.com 38/68 Display Compressor discharge temperature (TD) protection P3: The detected discharge temperature(TD) is no less than specified value. Error definition: Cooling: 248°F Heating: 230°F E3: System locks up when P3 has occurred six times within 3 hours.
  • Page 49 ESI (Ultra) Service Manual www.ecoer.com 39/68 Display Compressor discharge temperature (TD) sensor is disconnected or damaged Compressor discharge temperature (TD) sensor is disconnected or damaged. Error definition: TD<Tc-9°F for 20 minutes, Tc means the condensing temperature. Discharge temperature (TD) sensor is disconnected or damaged...
  • Page 50 ESI (Ultra) Service Manual www.ecoer.com 40/68 Display Inverter module temperature (TF) protection P5: The detected value of module temperature (TF) is no less than specified value. Error definition: EODA18H-2436: 181°F EODA18H-4860: 176°F in cooling mode/ 167°F in heating mode E5: System locks up when P5 has occurred six times within 3 hours.
  • Page 51 ESI (Ultra) Service Manual www.ecoer.com 41/68 Display Compressor over-current protection P6: The detected compressor current is over the maximum allowed value. Error definition: EODA18H-2436: 16A EODA18H-4860: 20A E6: System locks up when P6 has occurred six times within 3 hours.
  • Page 52 ESI (Ultra) Service Manual www.ecoer.com 42/68 Display Liquid slugging protection This control is to prevent compressor from damaging because of liquid slugging. Error definition: When SH<9.0°F and compressor discharge superheat (DSH=TD-SC-TL-1.8) <14.4°F for 20 minutes, starting to accumulate the liquid slugging time. Report P7 once it lasts for 30 minutes.
  • Page 53 ESI (Ultra) Service Manual www.ecoer.com 43/68 Display Liquid slugging protection Connect a pressure gauge to liquid service valve, compare the gauged pressure with the Heating mode transduced one by high pressure sensor. Check whether the discharge temperature sensor is properly...
  • Page 54 ESI (Ultra) Service Manual www.ecoer.com 44/68 Display Low compressor voltage protection P8: The detected compressor voltage by main chip is less than 310VDC. Error definition: E8: System locks up when P8 has occurred three times in 60 minutes. Abnormal power supply voltage...
  • Page 55  Disconnected wiring between fan motor and main control board   Had the IoT device successfully communicated with Ecoer cloud Make sure the IoT device works after installation? *NOTE properly. Is the fan speed higher than 200RPM on stop/standby condition?
  • Page 56 ESI (Ultra) Service Manual www.ecoer.com 46/68 Display Ambient temperature (TA) sensor fault The outside temperature (TA) sensor is short circuit or open circuit. Error definition: Damaged main control board Possible causes: Loose connection at port on main control board ...
  • Page 57 ESI (Ultra) Service Manual www.ecoer.com 47/68 Display Compressor suction temperature (TS) sensor fault The suction temperature (TS) sensor is short circuit or open circuit. Error definition: Damaged main control board Possible causes: Loose connection at port on main control board ...
  • Page 58 ESI (Ultra) Service Manual www.ecoer.com 48/68 Display Liquid line temperature (TL) sensor fault The liquid temperature (TL) sensor is short circuit or open circuit. Error definition: Damaged main control board Possible causes: Loose connection at port on main control board ...
  • Page 59 ESI (Ultra) Service Manual www.ecoer.com 49/68 Display Defrost temperature (TH) sensor fault The defrost temperature (TH) sensor is short circuit or open circuit. Error definition: Damaged main control board Possible causes: Loose connection at port on main control board ...
  • Page 60 ESI (Ultra) Service Manual www.ecoer.com 50/68 Display Compressor discharge temperature (TD) sensor fault The discharge temperature (TD) sensor is short circuit or open circuit. Error definition: Damaged main control board Possible causes: Loose connection at port on main control board ...
  • Page 61 Turn off the power supply, unplug the TF sensor to check if the Replace the sensor *NOTE2 resistance is in the range of Temperature sensor B. *NOTE1 Contact Ecoer Service Team for assist before claim the main control board NOTES: 1.
  • Page 62 ESI (Ultra) Service Manual www.ecoer.com 52/68 Display High pressure (HP) sensor fault The high pressure sensor is open or shorted. Error definition and method to check: The voltage between CN10 pin(1) and (2) is not in the range 0.59~4.76VDC. CN10...
  • Page 63 ESI (Ultra) Service Manual www.ecoer.com 53/68 NOTE: Connect a pressure gauge to liquid service valve in cooling mode, gas service valve in heating mode. Compare the value difference between gauged pressure and the transduced one by high pressure sensor (spot check by BS3 button or check the data from ESS Pro App).
  • Page 64 ESI (Ultra) Service Manual www.ecoer.com 54/68 Display Low pressure (LP) sensor fault The low pressure sensor is open or shorted. Error definition and method to check: The voltage between CN9 pin(1) and (2) is not in the range 0.70~4.50VDC. IC A/D...
  • Page 65 ESI (Ultra) Service Manual www.ecoer.com 55/68 NOTE: Connect a pressure gauge to gauge port, compare the difference between the gauged pressure and the transduced one by low pressure sensor (spot check by BS3 button or check the data from ESS Pro App).
  • Page 66 ESI (Ultra) Service Manual www.ecoer.com 54/68 Display Communication fault between main chip and INV drive chip Communication fault between the main control chip and inverter chip. Error definition and method to check: Loose connection at CN21 terminal Possible causes: Damaged main control board ...
  • Page 67 ESI (Ultra) Service Manual www.ecoer.com 55/68 Display Ambient temperature limit operation H1: The detected ambient temperature is absolutely prohibited for cooling. Error definition and method to check: TA<32°F or ≥140°F H2: The detected ambient temperature is absolutely prohibited for heating.
  • Page 68 ESI (Ultra) Service Manual www.ecoer.com 56/68 Display Abnormal switch alarm for reversing valve way (reversing) valve switches incompletely after defrost operation or from cooling mode. Error definition: Report H3 alarm if TH ≥ TL+10.8°F and TH ≥ TA+5.4°F. Damaged reversing valve(coil or body)
  • Page 69 ESI (Ultra) Service Manual www.ecoer.com 57/68 Display Defrost temperature (TH) sensor is disconnected or damaged The defrost temperature (TH) sensor is short circuit or open circuit. Error definition: Damaged main control board Possible causes: The defrost temperature sensor is wrongly seated ...
  • Page 70 Turn off the power supply for five minutes, then turn on the Back to normal power supply to check if the system goes back to normal? Contact Ecoer Service Team Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 71 ESI (Ultra) Service Manual www.ecoer.com 59/68 Display Compressor INV module protection Error definition: Code LED Display Definition Critical over-voltage fault DC bus over-voltage protection DC bus under-voltage protection Over-current protection Zero speed fault Compressor speed inconsistent fault Compressor speed difference between given transient variation...
  • Page 72 ESI (Ultra) Service Manual www.ecoer.com 60/68 Display Compressor INV module protection Contact power supply agency to verify that they are sending the The power supply voltage is not in the range of 187~253VAC. correct voltage. Replace the indoor coil Has the micro channel coil been used for heat pump?

  • Page 73: Parts List

    ESI (Ultra) Service Manual www.ecoer.com 61/68 4 Parts List Model Part Number F522900000 EODA18H-2436 EODA18H-4860 F523100000 Parts number Part Name Quantity Remark 2436 4860 231235269 231235477 Condenser ass'y Condenser connection pipe 231235268 ass'y Condenser 231235270 231235271 231235085 231235153 Condenser outlet pipe ass'y...
  • Page 74 ESI (Ultra) Service Manual www.ecoer.com 62/68 Parts number Part Name Quantity Remark 2436 4860 Cap nut 230803110 230803111 Electrical installation bolt Roof support frame 230801628 230801590B 230801609B Supporting board Side board ass'y 230803142 230802064A 230803143 230802065A Side board ass'y High-pressure valve ass'y...

  • Page 75: Appendix

    ESI (Ultra) Service Manual www.ecoer.com 63/68 5 Appendix Temperature sensor A* (TS, TH, TA, TL) 5.1 Sensor Characteristic Temp. Temp. Resistanc Voltage Temp. Temp. Resistance Voltage Temp. Temp. Resistance Voltage (°C) (°F) e (KΩ) (°C) (°F) (KΩ) (°C) (°F) (KΩ) 104.86...
  • Page 76 Temperature sensor B* (TF, TD) ESI (Ultra) Service Manual www.ecoer.com 64/68 Temp. Temp. Resistance Voltage Temp. Temp. Resistance Voltage Temp. Temp. Resistance Voltage (°C) (°F) (KΩ) (°C) (°F) (KΩ) (°C) (°F) (KΩ) 177.8 6.67 2.89 517.84 0.27 87.8 43.10 1.72 179.6...
  • Page 77 ESI (Ultra) Service Manual www.ecoer.com 65/68 Low Pressure Sensor Voltage Characteristics C* Resistance Output Resistance Output pressure pressure pressure pressure (KΩ) voltage(V) (KΩ) voltage(V) (MPa) (psig) (MPa) (psig) 0.10 14.5 49.51 0.70 0.68 98.6 13.61 1.86 0.11 47.91 0.72 0.70 13.15...
  • Page 78 ESI (Ultra) Service Manual www.ecoer.com 66/68 High Pressure Sensor Voltage Characteristics D* High High High High Resistance Output Resistance Output pressure pressure pressure pressure (KΩ) voltage(V) (KΩ) voltage(V) (MPa) (psig) (MPa) (psig) 14.5 60.60 0.59 449.5 4.55 3.20 51.74 0.67 4.22...

  • Page 79: Wiring Diagram

    ESI (Ultra) Service Manual www.ecoer.com 67/68 5.2 Wiring Diagram Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 80 ESI (Ultra) Service Manual www.ecoer.com 68/68 Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 81 ESI (Ultra) Service Manual www.ecoer.com 69/68 Manufacturer reserves the right to change specifications or designs without notice. 10.2019...
  • Page 82 ESI (Ultra) Service Manual www.ecoer.com 70/68 ©2017-2019 ECOER INC. 3900 Jermantown Rd, Suite 150, Fairfax, VA 22030 Tel: 703-348-2538 www.ecoer.com Manufacturer reserves the right to change specifications or designs without notice. 10.2019...

This manual is also suitable for:

Eoda18h-4860Esi ultra seriesEoda18h-2436

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