American Water Heater HPE10280H045DV, HPE10260H045DV manual Troubleshooting Common Service Problems

Page 36

Troubleshooting Common Service Problems

As a first step in diagnosis and troubleshooting, the unit should be disconnected from power at the breaker/fuse panel for ten seconds, then reconnect power to the unit and determine if the noted error code still appears. The process of waiting for the error code to reappear may take about 8 minutes for the initial power initialization of the unit.

PROBLEM

POSSIBLE CAUSE

TEST/CORRECTIVE

 

 

ACTION

NO HOT WATER:

No power to the water heater.

Check for blown fuse or tripped

 

 

breaker. Restore power to the unit

 

 

then press power button.

 

On/Off switch is off.

Press On/Off switch, should be

 

 

illuminated green when energized.

 

Unit in Vacation mode.

Press Vacation button to turn off.

 

High temperature limit switch open

Reset the high temperature limit

 

 

switch; see “ECO Switch Trouble-

 

 

shooting” (p.25)

 

Non-functioning upper

Perform temperature sensor

 

temperature sensor

resistance test procedure (p.32),

 

 

replace sensor if defective.

 

Inlet or outlet water valves at the

Insure valves are fully open

 

water heater closed

 

INSUFFICIENT HOT WATER

Temperature set point too low

Increase set point temperature;

/ SLOW HOT WATER

 

see “Adjusting Set Point

RECOVERY:

 

Temperature” section (p.13)

Inlet or outlet valves at the water

Insure valves are fully open

 

 

heater are partially closed

 

 

Air filter dirty

Clean or replace air filter

 

Hot water usage pattern exceeds

Change to diffrent mode or modify

 

the capability of the water heater

usage patterns

 

in current mode

 

 

Water connections to unit reversed

Ensure the cold connection is at

 

 

the bottom and the hot connection

 

 

is at the top

 

Heat lost through long run of

Insulate exposed piping.

 

exposed pipe

 

 

Hot water leak at faucet or piping

Repair hot water leaks

 

Non-functioning heating element

Test elements and replace as

 

 

required; see details in the

 

 

“Element Test” section (p.22-23)

 

Sediment or scale build up in tank

Drain and flush tank. Water

 

 

conditioning may be necessary to

 

 

minimize build up.

 

Water heater may be under-sized

Upgrade to larger capacity water

 

 

heater

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Contents Service Handbook HPE10260H045DV 60 GAL HPE10280H045DV 80 GALTable of Contents Introduction Certifications and ApprovalsTerms, Definitions and Formulas Safety Precautions Explosion HazardInstallation Checklist Potential Installation Issues Symptom Cause SolutionPowered Anode Operation Checking the Powered Anode for Proper OperationDry Fire Element Protection Piping Installation Water Piping SystemTemperature and Pressure Relief Valve Temperature & Pressure Relief ValveClosed System/Thermal Expansion Discharge LineGeneral Service information Cleaning/Replacing the Air FilterRoutine Preventive Maintenance Air Filter Cleaning/ReplacementOperating Mode Descriptions Operational OverviewHeat Pump Water Heater Operation User Interface Module OverviewAdjusting Set Point Temperature Selecting Operating ModeOperating Your Heat Pump Water Heater Turning the Unit OnControl Board Overview Heat Pump Water Heater Control Board OverviewSection a of Control Board CN 203 Powered Anode Section B of Control BoardRY 203 Upper Element Relay CN 204 Upper and Lower tank water temperature sensors CN 212 Temperature SensorsSection C of Control Board Section C of Control Board con’t Wiring Diagram for Models With Relay Heater Wiring DiagramWiring Diagram for Non-Relay Models FIigureAccessing the Maintenance Display Interpreting the fault code historyAccessing the Maintenance Display Screen Message MeaningIIA. Testing for a Burned Out Element IIB. Testing for a Grounded ElementElement Test Continuity Tester Preparing for the TestElement Test OhmMeter Heating Element Replacement Energy Cutout ECO Switch Troubleshooting ECO Function and TroubleshootingResetting a tripped ECO Relay Number Load Check PinsChecking the Run Capacitor Powered Anode Troubleshooting and Replacement Removing the Powered AnodeReplacing the Powered Anode Removing the Top Housing ShroudCompressor Check Flow Chart Check Voltage Resistance± 5% Values with 240 VAC inputPowered Anode Check Flow Chart Fan Check Flow Chart UIMFan Check Flow Chart Temperature Sensors Temperature Sensor Resistance MeasurementSensor Connector Chart Pins OverviewResistance vs. Temperature Charts Chart #1Pressure-Temperature Chart for Refrigerant R-134a Chart #3Cleaning the Evaporator Important Do not spray cleaner on the fan motorImportant Do not damage the fan blades Troubleshooting Common Service Problems Problem Possible Cause TEST/CORRECTIVE ActionOperating Costs Cap T&P discharge pipeDrain valve, relief Valve, etcCrackling, gurgling Popping, rumblingFault Code Troubleshooting Guide Fan Connect Fault Heat pump fan circuit is openFault Code Troubleshooting Guide Low Water Level Alarm The tank is not full of water Heat Pump Low Pressure Fault Lower pressure switch is openHeat Pump High Pressure Fault High pressure switch is open Main Control Board Crystal Fault Main board failure Main Control Board RAM Fault Main board failureMain Control Board ROM Fault Main board failure Main Control Board Eeprom Fault Main board failureLow Supply Voltage Fault Very low input voltage Power Anode Over Current Powered anode circuit not workingPower Anode ADC Error Powered anode circuit not working No Display on User Interface Module UIMDraining and Filling the Water Heater Draining and Filling the Water HeaterCondensate Pump Troubleshooting Condensate Drain MaintenanceDisposal of Condensate Part Number

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

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