Troubleshooting EcoSmart Tankless Water Heater Error Codes

**Troubleshooting EcoSmart Tankless Water Heater Error Codes**

EcoSmart tankless water heaters are renowned for their efficiency and reliability. However, like any complex appliance, they may occasionally encounter error codes, indicating specific issues that require attention. In this comprehensive guide, we'll delve into common error codes, their meanings, and detailed steps to troubleshoot them effectively, ensuring the continued optimal performance of your EcoSmart tankless water heater.

Common Error Codes and Their Meanings:
EcoSmart tankless water heaters may display various error codes to indicate specific issues. Understanding these error codes is crucial for troubleshooting. Here's a detailed breakdown:

1. **E1 error code: This error indicates a problem with the inlet thermistor, which measures the temperature of incoming water.

2. **E2 error code: Indicates a problem with the outlet thermistor, responsible for monitoring the temperature of the outgoing water.

3. **E3 error code: Indicates issues with both the inlet and outlet thermistors, suggesting a broader problem with temperature sensing.

4. **E4 error code: Indicates high-temperature errors, signifying that the incoming water temperature exceeds safe limits.

5. **E5 error code: Indicates high flow rate issues, suggesting that the volume of water passing through the unit is too high for proper operation.

6. **S103 error code: Indicates low voltage problems, suggesting an issue with the power supply to the unit.

Detailed Troubleshooting Steps:

1. Power Cycling Your Unit:
A simple power cycle can often resolve transient errors. Follow these detailed steps:

- Shut off all hot water faucets in your home to prevent water flow through the unit.
- Turn off your EcoSmart tankless water heater using either the remote control (if available) or the temperature control knob on the unit.
- Locate and turn off the circuit breakers supplying power to the unit.
- Allow the unit to remain off for a minimum of 5 minutes to ensure all residual power dissipates.
- After the waiting period, switch the unit back on and proceed to test its operation.

2. Resolving Specific Error Codes:
For each specific error code, follow these detailed troubleshooting steps:

- E1, E2, and E3 Error Codes: Temporarily troubleshoot these thermistor-related errors by following these steps:
- Turn on a hot water faucet to trigger the error code.
- Press and hold the round knob on the unit for 3-5 seconds until the display shows "CE1" (for E1) or "CE2" (for E2).
- Allow water to flow for 2-3 minutes to check if hot water is restored. This indicates a successful temporary fix.

Replacement Part Link-

Thermistors- Medium/Large – Smart Parts Solutions

- E4 Error Code: Address high-temperature errors by lowering the incoming water temperature to below 140 degrees Fahrenheit. This may involve adjusting your water heater's settings or installing a mixing valve to blend hot and cold water.

- E5 Error Code: Resolve high flow rate issues by installing a flow restrictor or adjusting water valves to reduce the flow rate. This ensures the unit operates within its designed parameters.

Corrective Part Link

Ecosmart 18Kw, 24Kw, 27Kw, and 36Kw. (3/4")

IFR 3-4 Inline Flow Restrictor 3/4'' – Smart Parts Solutions

Ecosmart 8Kw, 11Kw &13Kw units (1/2")

IFR 1-2 Inline Flow Restrictor 1/2'' – Smart Parts Solutions

- S103 Error Code: Test the incoming power supply voltage using a multimeter to ensure it meets the required voltage specifications. Address any issues with the electrical supply to restore proper functionality.

By following these detailed troubleshooting steps, you can effectively address common error codes on your EcoSmart tankless water heater and restore its optimal performance. While temporary fixes may provide immediate relief, it's essential to seek professional assistance for permanent solutions and to ensure the continued reliability of your unit.

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