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Ecoer EODA18H-4860 - User Manual

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ESI (Ultra) Service Manual
www.ecoer.com
1/68
Manufacturer reserves the right to change specifications or designs without notice.
10.2019
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.
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.

Other manuals for Ecoer EODA18H-4860

Questions and Answers

  • J
    Jennifer ChristensenAug 12, 2025
    What to do if my Ecoer Heat Pump system cannot cool well?
    • D
      Dylan JenkinsAug 12, 2025
      If your Ecoer Heat Pump system isn't cooling well, several factors could be the cause. It could be due to high or low outside temperatures, which activate a normal protection control to limit RPS. Other potential causes include a dirty air filter or a blocked outlet of the indoor unit (in which case you should replace the air filter and remove any obstacles), too little refrigerant in the system (check the refrigerant amount or for any leaks), or a blocked refrigerant in the condenser coil (counterclockwise the TXV, ensuring the refrigerant coefficient is 0.6).
  • R
    Rebecca PadillaAug 16, 2025
    What to do if my Ecoer Heat Pump system cannot heat well?
    • S
      szimmermanAug 16, 2025
      If your Ecoer Heat Pump system isn't heating well, several factors could be the cause. If the outside temperature is too low and there's no third-party heat inside, install auxiliary heat for backup (dual-heating is recommended). Other potential causes include a dirty outdoor coil (clean the outdoor coil), a dirty air filter (replace the air filter), lack of refrigerant (check refrigerant amount or any leaks), or using micro channel coil in heating (no micro channel coils shall be used for heat pump).
  • T
    Tracy WilkinsonAug 19, 2025
    Why does my Ecoer Heat Pump system not start-up but the digital tube shows normally?
    • L
      Larry SheltonAug 20, 2025
      There are a couple of reasons why your Ecoer Heat Pump system might not be starting up even though the digital display appears normal. First, check that the Y/O/C wirings are correctly connected and that the cooling/heating setting temperature from the thermostat is properly set. Second, the thermostat might be incompatible; try using other traditional 24Vac thermostats.
  • T
    tracimirandaAug 23, 2025
    Why does my Ecoer Heat Pump system operate mode reversely?
    • P
      Pamela RojasAug 23, 2025
      If your Ecoer Heat Pump system is operating in reverse mode, it is probably due to an incorrect O/B signal selection. Choose 'O' for cooling from the thermostat.
  • T
    Tommy FowlerAug 27, 2025
    What to do if my Ecoer EODA18H-4860 Heat Pump cannot cool well?
    • J
      Jason Pearson Jr.Aug 27, 2025
      If your Ecoer Heat Pump isn't cooling effectively, several factors could be the cause. The outside temperature might be too high, triggering normal protection controls. Alternatively, the outside temperature could be too low, so you should ensure the cooling loads. A dirty air filter or blocked duct can also restrict airflow; replace the air filter and clear any obstructions. Low refrigerant levels or a refrigerant blockage in the condenser coil could also be the reason. In the latter case, counterclockwise the TXV, ensuring the refrigerant coefficient is 0.6. Finally, check for refrigerant leaks and replenish if needed.
  • K
    kathy26Aug 30, 2025
    Why is my Ecoer Heat Pump not heating well?
    • P
      Patricia SmithAug 30, 2025
      If your Ecoer Heat Pump is struggling to heat, it could be due to several reasons. If the outside temperature is too low and there's no third-party heat source, consider installing auxiliary heat for backup. A dirty outdoor coil or one covered in heavy snow can also reduce heating efficiency; clean the outdoor coil in this case. Also, replace the air filter if it is dirty. Ensure that micro channel coils have not been used for the heat pump, as they are incompatible. Finally, check for refrigerant leaks and replenish if necessary.
  • J
    Jennifer Ewing MDSep 3, 2025
    How to fix Ecoer EODA18H-4860 Heat Pump that does not start but shows normally?
    • A
      Angela KnappSep 3, 2025
      If your Ecoer Heat Pump's digital display appears normal but the system won't start, there are a couple of potential causes. First, check that the Y/O/C wirings are correctly connected and that the cooling/heating setting temperature on your thermostat is properly set, ensuring there is 24 VAC for the Y signal from the thermostat. Second, your thermostat might be incompatible; try using another traditional 24VAC thermostat.
  • D
    dylanburkeSep 7, 2025
    What to do if Ecoer Heat Pump operates mode reversely?
    • J
      jessica76Sep 7, 2025
      If your Ecoer Heat Pump is operating in reverse mode, the issue is likely due to an incorrect O/B signal selection. To resolve this, choose 'O' for cooling at the thermostat.

Summary

1 General Information

Condensing Unit Model Identification

Explains model letters and capacity for outdoor condensing units.

Air Handler Model Identification

Details model letters and capacity for indoor air handlers.

2.1 Refrigerant Circuit Functional Parts Layout

Functional Parts Layout of Condensing Units

Details functional parts layout of the condensing unit's refrigerant circuit.

2.2 Function and Control Operation Modes

2.2.1 System Operation Modes

Explains system operation modes, including cooling, heating, and defrost.

2.3 Field Setting and Display

2.3.1 Default Display Codes

Explains the 7-segment display codes for unit status and errors.

2.3.2 Setting by Dip Switches

Describes how to configure unit functions using dip switches.

2.3.3 Setting by Pressing Buttons

Details how to adjust settings and query data using control buttons.

3 Troubleshooting

3.1 Problems Without Error Codes

Guides on diagnosing common operational issues not indicated by specific codes.

3.2 Error Codes List

A reference for all system error codes, their descriptions, and resolution pages.

4 Parts List

Condenser Unit Parts Identification

Lists main condenser parts and connection pipes.

Electrical and Mechanical Component Parts

Details fan, motor, sensors, boards, and other mechanical components.

5 Appendix

5.1 Sensor Characteristics Data

Provides resistance and voltage data for various temperature and pressure sensors.

5.2 Wiring Diagrams

Illustrates electrical connections for the unit and thermostat compatibility.

Ecoer EODA18H-4860 Specifications

General IconGeneral
BrandEcoer
ModelEODA18H-4860
CategoryHeat Pump
LanguageEnglish

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