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American Water Heater
HPE10260H045DV, HPE10280H045DV, RESIDENTIAL HYBRID ELECTRIC HEAT PUMP WATER HEATER
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P.O. Box 1597, 500 Princeton Road, Johnson City, TN 37605
Technical Support: 800-456-9805 • Parts: 800-433-2545 • Fax: 800-644-9306
www.americanwaterheater.com
Copyright © 2011,
All Rights Reserved.
Contents
Main
RESIDENTIAL HYBRID ELECTRIC HEAT PUMP WATER HEATER
Service Handbook
Table of Contents
Introduction:
Certifications and Approvals:
Tools for servicing residential electric heat pump water heater models:
Supplies for servicing residential electric heat pump water heater models:
Service Handbook
Terms, De nitions and Formulas
Safety Precautions
WARNING
Installation Checklist
Water Heater Location
Water System Piping
Condensate Drain Line Installation
Electrical Connections
Potential Installation Issues
Symptom Cause Solution
Dry Fire Element Protection
Powered Anode Operation
Checking the Powered Anode for Proper Operation:
Water Piping System
Piping Installation
Explosion Hazard
Temperature and Pressure Relief Valve
Closed System/Thermal Expansion
General Service information
Routine Preventive Maintenance
Cleaning/Replacing the Air Filter
Air Filter Cleaning/Replacement
Operational Overview
Heat Pump Water Heater Operation:
Operating Mode Descriptions:
User Interface Module Overview:
Initial Start Up:
Operating Your Heat Pump Water Heater
Turning the Unit On:
Adjusting Set Point Temperature:
Selecting Operating Mode:
Other Controls
Page
Section A of Control Board
Section B of Control Board
Section C of Control Board
Section C of Control Board (cont)
CN 211/215 UIM Communication Cable:
Note: CN 208 Overload Detection:
Note:
SW 201 Dip Switch:
Wiring Diagram for Models With Relay
Approved Connectors
Green
L1 L2
Red Black
Wiring Diagram for Non-Relay Models
FIigure 11
Accessing the Maintenance Display
Accessing the Maintenance Display
Screen Message Meaning
Interpreting the fault code history
E l ement Test (Continuity Tester)
I. Preparing for the Test
IIA. Testing for a Burned Out Element
IIB. Testing for a Grounded Element
III. Completing the Test
E l ement Test (OhmMeter)
IIA. Testing for a Burned Out Element
IIB. Testing for a Grounded Element
III. Completing the Test
I. Preparing for the Test
Heating Element Replacement
Energy Cutout (ECO) Switch Troubleshooting
ECO Function and Troubleshooting:
Resetting a tripped ECO:
TABLE 3 Relay Number Load Check Pins
Checking the ECO:
Checking the Run Capacitor
Powered Anode Troubleshooting and Replacement
Checking the Powered Anode for Proper Operation:
Removing the Powered Anode:
Replacing the Powered Anode:
Removing the Top Housing (Shroud):
Compressor Check Flow Chart
Powered Anode Check Flow Chart
Page
Fan Check Flow Chart
Temperature Sensors
Overview:
Temperature Sensor Resistance Measurement:
TABLE 5 Sensor Connector / Pins
Chart
Chart #1
Resistance vs. Temperature Charts
Resistance vs. Temperature for Tank and Discharge thermistors
Chart #2
Pressure-Temperature Chart for Refrigerant R-134a
Chart #3
Cleaning the Evaporator
Figure 18
NO HOT WATER:
INSUFFICIENT HOT WATER / SLOW HOT WATER RECOVERY:
HIGHER THAN EXPECTED OPERATING COSTS:
DRIP FROM TEMPERATURE & PRESSURE RELIEF VALVE: (Warning: Do not plug or cap T&P discharge pipe.)
OTHER:
LEAKS AROUND THE ELEMENTS:
Page
Upper Element Connect Fault (Upper heating element circuit is open):
Lower Element Connect Fault (lower heating element circuit is open):
Heat Pump Connect Fault (Heat pump compressor circuit is open):
Fan Connect Fault (Heat pump fan circuit is open):
Ambient Temperature Sensor Short or Open or Ad Error (Ambient temperature sensor
Upper Temperature Sensor Short or Open or Ad Error (Upper temperature sensor
Lower Temperature Sensor Short or Open or Ad Error (Lower temperature sensor
Low Water Level Alarm (The tank is not full of water):
Heat Pump Low Pressure Fault (Lower pressure switch is open):
Heat Pump High Pressure Fault (High pressure switch is open):
Heat Pump High Temperature Fault (Compressor discharge temperature is too high):
Main Control Board Crystal Fault (Main board failure):
Main Control Board RAM Fault (Main board failure):
Main Control Board ROM Fault (Main board failure):
Main Control Board EEPROM Fault (Main board failure):
Low Supply Voltage Fault (Very low input voltage):
High Temperature Lock Out (ECO tripped due to excessivly high tank temperature):
Condensate Drain Alarm (The installed condensate pump is not working):
Power Anode Over Current (Powered anode circuit not working):
Power Anode Max Current at Min PWM (Powered anode circuit not working):
Power Anode Drive Voltage LT Tank Voltage (Powered anode circuit not working):
Power Anode ADC Error (Powered anode circuit not working):
Power Anode No Tank Voltage (Powered anode circuit not working):
Power Anode No Current Sense (Powered anode circuit not working):
Power Anode Wrong Voltage Feedback (Powered anode circuit not working):
Draining and Filling the Water Heater
D raining and F illing the Water Heater
Condensate Pump Troubleshooting
Condensate Drain Maintenance
Disposal of Condensate
Inspection/Cleaning of the Condensate Drain Pan & Condensate Drain Lines
Service Parts List for 60 and 80 Gallon Heat Pump Water Heaters
Item Part Number