American Water Heater HPE10260H045DV, HPE10280H045DV Energy Cutout ECO Switch Troubleshooting

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Energy Cutout (ECO) Switch Troubleshooting

ECO Function and Troubleshooting:

Checking the ECO:

An energy cutout (ECO) switch is installed on this water heater to shut down the water heating means in the event of a malfunction. If the upper tank temperature reaches 190°F. the ECO contacts will open breaking the L1 and L2 legs that feed the upper heating elements. The ECO also interrupts power to the compressor control relay, which in turn shuts off power to the compressor. Some models will not have a compressor relay in which case the compressor will be controlled directly by the ECO. Refer to the wiring diagram located on the control box cover to see if a given unit is equipped with a compressor control relay.

If the ECO has tripped, it must be manually reset as follows below.

1.Shut off power to the unit at the breaker/fuse panel prior to servicing the unit.

2.Gain access to the ECO located in the upper element compartmant, above the element.

3.Remove the black wire from terminal number one (1) and the white wire from terminal number three (3) on the ECO.

4.Using an Ohm meter or continuity tester, check pin 1 to pin 2; there should be continuity (very low resistance). If resistance is high or continuity checks bad, replace the ECO. Check pin 3 to 4, again there should be continuity. If not replace the ECO.

Resetting a tripped ECO:

1.Shut off power to the unit at the breaker/fuse panel prior to servicing the unit.

2.Gain access to the ECO located in the upper element compartment, above the element.

3.Check the temperature of the tank. In order to manually reset the ECO, the tank temperature must first drop below 120°F.

4.Press the red button located on the front of the ECO.

5.Apply power to the unit. Once the ECO has been reset, the fault on the user interface module should clear and the water heater should return to normal operation.

If resetting the ECO does not clear the error, the ECO will need to be checked. Follow the procedure below.

NOTE: Tank temperature must be less than 120°F in order to re-set ECO.

Investigate cause of ECO tripping:

It is very important to investigate why the ECO tripped as the control board may be faulty. Check the relays on the control board to determine if the contacts might be stuck closed; check the three relays listed in Table 3 by checking pin to pin resistances as noted. Resistance should be greater than 1 mega-Ohm (no continuity) between the pins as listed in the table. If the resistance between any of the pin combinations listed is less than 1 mega-Ohm, replace the control board.

TABLE 3

Relay Number

Load

Check Pins

RY 203

Upper Element

COM to NO (Top of Relay)

RY 205

Lower Element

CN206 pin 1 to 4

RY 207

Compressor

CN202 pin 1 to 2

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Contents HPE10260H045DV 60 GAL HPE10280H045DV 80 GAL Service HandbookTable of Contents Certifications and Approvals IntroductionTerms, Definitions and Formulas Explosion Hazard Safety PrecautionsInstallation Checklist Symptom Cause Solution Potential Installation IssuesChecking the Powered Anode for Proper Operation Powered Anode OperationDry Fire Element Protection Water Piping System Piping InstallationTemperature & Pressure Relief Valve Temperature and Pressure Relief ValveClosed System/Thermal Expansion Discharge LineCleaning/Replacing the Air Filter General Service informationRoutine Preventive Maintenance Air Filter Cleaning/ReplacementOperational Overview Operating Mode DescriptionsHeat Pump Water Heater Operation User Interface Module OverviewSelecting Operating Mode Adjusting Set Point TemperatureOperating Your Heat Pump Water Heater Turning the Unit OnHeat Pump Water Heater Control Board Overview Control Board OverviewSection a of Control Board Section B of Control Board CN 203 Powered AnodeRY 203 Upper Element Relay CN 212 Temperature Sensors CN 204 Upper and Lower tank water temperature sensorsSection C of Control Board Section C of Control Board con’t Heater Wiring Diagram Wiring Diagram for Models With RelayFIigure Wiring Diagram for Non-Relay ModelsInterpreting the fault code history Accessing the Maintenance DisplayAccessing the Maintenance Display Screen Message MeaningIIB. Testing for a Grounded Element IIA. Testing for a Burned Out ElementElement Test Continuity Tester Preparing for the TestElement Test OhmMeter Heating Element Replacement ECO Function and Troubleshooting Energy Cutout ECO Switch TroubleshootingResetting a tripped ECO Relay Number Load Check PinsChecking the Run Capacitor Removing the Powered Anode Powered Anode Troubleshooting and ReplacementReplacing the Powered Anode Removing the Top Housing ShroudCheck Voltage Resistance Compressor Check Flow Chart± 5% Values with 240 VAC inputPowered Anode Check Flow Chart UIM Fan Check Flow ChartFan Check Flow Chart Temperature Sensor Resistance Measurement Temperature SensorsSensor Connector Chart Pins OverviewChart #1 Resistance vs. Temperature ChartsChart #3 Pressure-Temperature Chart for Refrigerant R-134aImportant Do not spray cleaner on the fan motor Cleaning the EvaporatorImportant Do not damage the fan blades Problem Possible Cause TEST/CORRECTIVE Action Troubleshooting Common Service ProblemsCap T&P discharge pipe Operating CostsValve, etc Drain valve, reliefCrackling, gurgling Popping, rumblingFan Connect Fault Heat pump fan circuit is open Fault Code Troubleshooting GuideFault Code Troubleshooting Guide Heat Pump Low Pressure Fault Lower pressure switch is open Low Water Level Alarm The tank is not full of waterHeat Pump High Pressure Fault High pressure switch is open Main Control Board RAM Fault Main board failure Main Control Board Crystal Fault Main board failureMain Control Board ROM Fault Main board failure Main Control Board Eeprom Fault Main board failurePower Anode Over Current Powered anode circuit not working Low Supply Voltage Fault Very low input voltageNo Display on User Interface Module UIM Power Anode ADC Error Powered anode circuit not workingDraining and Filling the Water Heater Draining and Filling the Water HeaterCondensate Drain Maintenance Condensate Pump TroubleshootingDisposal of Condensate Part Number

RESIDENTIAL HYBRID ELECTRIC HEAT PUMP WATER HEATER, HPE10260H045DV, HPE10280H045DV specifications

The American Water Heater HPE10280H045DV and HPE10260H045DV are pioneering residential hybrid electric heat pump water heaters designed to deliver energy-efficient performance while meeting the hot water demands of modern households. These innovative units fuse traditional electric heating with advanced heat pump technology, allowing for significant reductions in energy consumption compared to conventional electric water heaters.

One of the primary features of these hybrid models is their outstanding energy efficiency ratings. Both units typically achieve an impressive Energy Factor (EF) that reflects their ability to convert electricity into hot water. By utilizing ambient air to heat water, these heat pump water heaters pull in heat from the surrounding environment and transfer it to the water, thus consuming less electricity. This technology not only reduces energy bills but also decreases the overall carbon footprint of the home.

The HPE10280H045DV and HPE10260H045DV boast a sleek, compact design that allows for flexible installation options, making them suitable for various locations within a home. Their user-friendly digital interface provides homeowners with intuitive controls to manage temperature settings and monitor performance. These models are equipped with smart technology that includes an intuitive display for adjusting modes and settings. They feature selectable operating modes, including electric, heat pump, and hybrid, allowing users to choose the most efficient heating method based on current needs.

In terms of capacity, the HPE10280H045DV offers a substantial 80-gallon tank, while the HPE10260H045DV provides a 60-gallon capacity, ensuring that households of different sizes can enjoy ample hot water for showers, laundry, and dishwashing simultaneously. Both models are designed with durability in mind, featuring robust components and corrosion-resistant tanks that promise longevity and maintenance-free operations.

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In summary, the American Water Heater HPE10280H045DV and HPE10260H045DV represent a leap forward in the water heating industry, combining innovative heat pump technology with user-friendly features, energy efficiency, and ample capacity, making them an excellent choice for environmentally conscious homeowners looking for reliable hot water solutions.
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