EcoSmart ECO Series User Manual

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EcoSmart™ Troubleshooting Guide
Models E C O 18 – 36 kW
This gu i de i s des i g n ed for installers or homeowners to help troubleshoot any issues experienced
during the lifetime of the tankless water heater.
For additional help, go to ecosmartus.com/support/videos and view the troubleshooting videos, or
email technical support at support@ecosmartus.com.

EcoSmart ECO Series Specifications

General

Energy Efficiency	99.8%
Weight	6.5 lbs
Brand	EcoSmart
Type	Tankless
Temperature Range	80°F - 140°F
Flow Rate	Up to 2 GPM
Warranty	Limited Lifetime
Voltage	240V

Summary

Activity A | Thermistors Troubleshooting

Activity B | Flow Meter Troubleshooting

Activity C | Electrical Connection

Activity C-1 | Verifying Connection

Procedure to verify electrical connections for the unit.

Activity D | Checking Fuse

Fuse A/250 Volt 3 AMP

Instructions for locating and testing Fuse A.

Fuse B/250 Volt 500 milliamps Fast Acting

Instructions for locating and testing Fuse B.

Activity E | Checking Elements

Activity F | Required Maintenance

Manual Maintenance

Procedure for manual cleaning of heating elements with vinegar.

Filtration Maintenance

Consulting specialists for regulating water quality and sediment levels.

Recirculating Maintenance

Procedure for flushing the heat exchanger with vinegar and a pump.

Activity G | Sizing

E-1 Error Code | Inlet Thermistor

E 2 Error Code | Outlet Thermistor

E 3 Error Code | Outlet & Inlet Thermistors

E 4 Error Code | High Temperature

E 5 Error Code | High Flow Rate

S103 Error Code | Low Voltage