Rheem Residential 120V Plugin With HydroBoost Heat Pump Water Heater
Use & Care Manual With Installation Instructions for the Installer
Product Type: Residential 120V Plugin Heat Pump Water Heater (Shared Circuit)
Model/Revision: AP22654 Rev 01
Copyright: © 2022 Rheem Sales Company Inc.
Introduction
The purpose of this manual is twofold: to provide the installer with basic directions and recommendations for proper installation and adjustment, and for the owner-operator, to explain features, operation, safety precautions, maintenance, and troubleshooting. A parts list is also included.
It is imperative that all persons who are expected to install, operate, or adjust this water heater read these instructions carefully. If any part is unclear, seek professional advice. Questions regarding operation, maintenance, service, or warranty should be directed to the seller. Do not destroy this manual; keep it for future reference.
Recognize this symbol as an indication of Important Safety Information!
Safety Information
Your safety and the safety of others are very important. Always read and obey all safety messages.
This is the safety alert symbol. It alerts you to potential hazards that can kill or hurt you and others.
Safety messages are preceded by the words:
- DANGER: An imminently hazardous situation that will result in death or serious injury.
- WARNING: A potentially hazardous situation that could result in death or serious injury and/or damage to property.
- CAUTION: A potentially hazardous situation that may result in minor or moderate injury.
- NOTICE: Attention is called to observe a specified procedure or maintain a specific condition.
Water Temperature Setting
⚠️ DANGER! WATER TEMPERATURE SETTING
Water temperatures above 125°F (52°C) can cause severe burns or death from scalding. Be sure to read and follow the warnings on the label pictured below and located near the thermistor access panel.
Time/Temperature Relationship in Scalds
| Temperature | Time To Produce a Serious Burn |
|---|---|
| 120°F (49°C) | More than 5 minutes |
| 125°F (52°C) | 1½ to 2 minutes |
| 130°F (54°C) | About 30 seconds |
| 135°F (57°C) | About 10 seconds |
| 140°F (60°C) | Less than 5 seconds |
| 145°F (63°C) | Less than 3 seconds |
| 150°F (65°C) | About 1½ seconds |
| 155°F (68°C) | About 1 second |
Table courtesy of Shriners Burn Institute
Children, disabled, and elderly persons are at the highest risk of being scalded. Households with these individuals may require a 120°F (49°C) or lower thermostat setting.
The outlet water temperature regulator is factory set at 120°F (49°C).
NOTICE: Additional external mixing valves complying with ASSE 1017 are recommended for reducing point-of-use water temperature.
⚠️ DANGER: Hotter water increases the potential for Hot Water SCALDS.
The illustration below shows the water temperature setting interface:
Illustration shows a control panel with buttons labeled ON/OFF, CLEAR ALARM, WiFi, ENTER, MODE, NEXT. Display shows temperature (e.g., 120°F), mode indicators (VACATION, HEAT PUMP, HEATING), and status icons (ALARM, SCROLL, SCALD RISK).
Hydroboost
These Heat Pump Water Heater models feature a mixing valve at the water outlet that mixes cold inlet water with hot outlet water to achieve a temperature of 120°F (49°C). This valve is located at the hot water outlet coupling and protected by a plastic cover.
The outlet temperature can be modified by removing the white key cap and using it to adjust the spindle. The factory setting is 120°F (49°C).
NOTICE: The mixing valve temperature setting should never be higher than the unit set point. Increasing the mixing valve temperature setting may increase hot water availability but reduces efficiency and increases scalding risk.
Diagram shows the Hydroboost mixing valve assembly with a removable key cap and adjusting spindle.
Hydroboost Kit Temperature Setting
To adjust the mixing valve outlet temperature, remove the cap to access the adjusting spindle. Rotate the spindle clockwise to reduce temperature, or counter-clockwise to increase temperature until the desired set point is reached. Ensure both hot and cold water sources are on and measure the outlet temperature at the nearest outlet. A plumber or technician is recommended for temperature validation.
Once set, snap the cap back onto the valve.
California Installation Requirements
⚠️ WARNING!
California Law requires all new and replacement water heaters to be braced, anchored, or strapped to resist falling or horizontal displacement due to earthquake motion. Consult the California Plumbing Code or local modifications.
Generic instructions can be obtained by writing the California Department of General Services, Division of State Architect, calling (916) 445-8100, or visiting https://www.dgs.ca.gov/-/media/Divisions/DSA/Publications/gas_shutoff/waterheaterbracing.
Installation Instructions
General Safety Precautions
- Have the installer show you the circuit breaker location and how to shut it off. Turn off the breaker if the water heater has been subjected to overheating, fire, flood, physical damage, or if the ECO fails.
- Read this manual entirely before installing or operating.
- Use the appliance only for its intended purpose.
- Ensure proper installation according to local codes and provided instructions.
- ⚠️ WARNING! Disconnect all power before maintenance to prevent electrical shock.
- ⚠️ WARNING! Flammable contents under pressure. Compressor is not serviceable. Arc flash hazard.
- DO NOT attempt to repair or replace parts unless recommended in this manual. Refer all other servicing to a qualified technician.
- DO NOT attempt to repair or replace the compressor, refrigerant, or sealed refrigerant system.
- DO NOT turn on electrical supply or operate unless the water heater is completely full of water.
Refrigerant
This Hybrid Water Heater is factory charged with R134A, an environmentally friendly, non-chlorinated refrigerant with zero ozone depletion potential.
Location Requirements
Choose a location considering:
- Local Installation Regulations: Install according to instructions, local codes, utility codes, and the National Electrical Code (ANSI/NFPA 70). Canadian installations refer to CSA22.1.
- Area: Clean, dry, near greatest heated water demand. Protect from freezing temperatures; DO NOT install outdoors.
- Floor: Must be strong enough to support the filled weight. Floor isolation kit recommended for vibrations.
- Clearances: Minimum 6" above heat pump for filter maintenance. (See diagram for Rear/Sides/Top clearances without ducting).
- Ventilation: Adequate ventilation is required, especially in confined spaces. Ambient temperatures should not exceed 145°F (63°C).
- Drain Pan: Recommended where leakage could cause damage. Must be adequately drained and conform to local codes.
Diagram shows a water heater in a room, illustrating clearances and placement considerations. A second diagram shows different room types and ducting requirements (Not Ducted, Ducted with Inlet/Outlet Duct).
Inspect Shipment
Inspect for possible damage. Verify power supply on the rating plate matches requirements.
Thermal Expansion
A check valve in the cold water inlet line can create a "closed water system." In such systems, water expands when heated, causing a rapid pressure increase. This can lead to premature relief valve failure. An expansion tank is recommended to control thermal expansion. Consult your installer or water supplier for other methods.
Water Supply Connections
Use flexible connectors for hot and cold water (3/4" NPT). Install a shut-off valve in the cold water line. DO NOT apply heat directly to water connections; sweat tubing to adapter first. Avoid excess thread sealant.
Condensate Drains
Consult local codes. Use a thin layer of piping tape or silicone for connections. DO NOT overtighten. The unit has a 3/4" NPT female condensate connection. Use MIP fittings. Drain lines must be pitched downward (min. 1/8" per foot), include a P-trap if connected to a sewer, and be insulated where necessary. If no drain is available, use a condensate pump. DO NOT drain into the water heater drain pan.
NOTICE: Condensate from this unit is not acidic and does not require neutralization.
Relief Valve
A combination temperature and pressure relief valve is factory installed and must remain. The pressure rating must not exceed 150 PSI. The BTUH rating must not be less than the water heater's input rating. The discharge line must connect to a suitable open drain, be no smaller than the valve outlet, pitch downward, and be protected from freezing. DO NOT connect other plumbing or the condensate plumbing to the T&P discharge line.
To Fill the Water Heater
Ensure the drain valve is closed. Open the cold water shut-off valve. Slowly open hot water faucets to vent air. A steady flow indicates the tank is full.
LeakSense™
This feature detects water leaks and automatically shuts off the heat pump and closes the water shut-off valve. It alerts the user via the EcoNet app.
Self Check
The automatic water shut-off valve performs a self-check every 30 days. If it fails to reopen, the unit will be DISABLED and an alert will be given.
EcoNet™ Communication
Provides integration with home automation, energy management, and demand response systems via Wi-Fi.
Electrical Connections
⚠️ WARNING!
- Turn off power at the fuse box or service panel before making electrical connections.
- Disconnect all power before maintenance.
- The unit must be grounded.
- If the water heater has been subjected to fire, flood, or damage, DO NOT operate until checked by a qualified technician.
- NOTICE: DO NOT use if any part has been under water. Call a qualified installer/agency to replace. DO NOT attempt repair.
Branch Circuit Sizing and Wire Size Guide
This guide recommends minimum branch circuit sizing and wire size based on the National Electric Code.
| SINGLE PHASE WIRING | Rated Current I (A) Total Water Heater Wattage | Recommended Over Current Protection (Fuse or Circuit Breaker Amperage Rating) 120V | Copper Wire Size AWG based on N.E.C. Table 310-16 (75°C) 120V |
|---|---|---|---|
| I<12A | 15 | 14 | |
| 12A < I < 16A | 20 | 12 |
Insulation Blankets
External insulation blankets are generally not necessary as this water heater meets energy conservation standards. The manufacturer's warranty does not cover damage from unauthorized energy-saving devices. If local codes require an insulation blanket, ensure it does not cover operating labels, air openings, or critical valves.
Ducting Requirements
Always check local building and HVAC codes. Ducting must be approved for HVAC applications and installed separately from other appliances. It must be adequately supported and use UL Certified terminations for outdoor venting. Rigid ducting should be isolated from structural members. A short section of flexible duct (min. 12 inches) is required between the water heater and rigid ducting for isolation.
NOTICE: The water heater duct should never connect to an HVAC system.
Every foot of flexible ducting counts as three feet of rigid ducting. Ducting must be insulated per HVAC codes. Ensure cold air exhaust is placed away from structures to prevent condensation.
Considerations for duct system planning: Use the most direct route, limit elbows, use the largest duct/termination size possible, and consider termination placement to reduce recirculation.
Duct System Configuration: 8", 7", 6", 5" diameter ducting is supported. Table 1 lists maximum duct lengths. Duct reducers must be installed within 10 feet of the unit or 2 feet of the duct end.
| Duct Type / Diameter | 8" | 7" | 6" | 5" |
|---|---|---|---|---|
| Rigid | 340' | 160' | 65' | 17' |
| Flexible | 125' | 65' | 25' | -- |
Equivalent feet for Duct Accessories
Table 2 lists equivalent feet for duct accessories and terminations. Rigid duct elbows and flex bends greater than 45° count as an elbow. Flexible duct bends' inner radius cannot be less than its diameter.
| Description | 8" | 7" | 6" | 5" |
|---|---|---|---|---|
| Elbows/Flexible Bends (Each) [Maximum Allowed] | 5' [8] | 5' [6] | 5' [4] | 5' [2] |
| 8 inch UL Certified Termination for ducting outside (Each) | 5' | 5' | 5' | 5' |
| Reduced diameter UL Certified Termination for ducting outside (Each) | N/A | 10' | 15' | 20' |
| 8 inch Register for ducting inside (Each) | 5' | 5' | 5' | 5' |
| Reduced diameter Register for ducting inside (Each) | N/A | 10' | 15' | 20' |
| Rodent Screen (must be greater than 83% open area) (Each) | 1' | 1' | 1' | 1' |
| Rheem approved 8" diameter Duct Damper | 25' | 20' | 10' | 5' |
Accessory Kits
Various accessory kits are available, including Earthquake Isolation Kits, Vibration Isolation Kits, UL Certified Terminations, Damper Kits, Duct Kits, and Hydro Boost Kits.
Ducting Example
A step-by-step calculation demonstrates how to determine if a specific duct configuration (e.g., 20 ft. flexible 8" duct with elbows and reducers) is within the maximum allowable length (95 ft. calculated vs. 125 ft. max).
Diagram illustrates a horizontal duct installation, showing connections, wall penetration, and air inlet/exhaust.
Installation Checklist
A comprehensive checklist covers:
- A. Water Heater Location: Proximity to demand, indoor/protected, free of flammable vapors, air circulation, water damage protection, service room, ceiling clearance, condensate disposal access, vibration/seismic kits.
- B. Water Supply: Tank filled, air purged, connections tight and leak-free, flexible connections.
- C. Relief Valve: Properly installed, discharge line to drain, protected from freezing.
- D. Wiring: Voltage agreement, correct breaker size (15A/20A), wire gauge (14/12 AWG), tight connections, proper grounding.
- E. Condensate Lines: Installed correctly, run to suitable drain, insulated.
- F. Ducting: HVAC approved, within max length, UL certified terminations, insulated, supported, isolated from structure.
- G. Shutoff Valve: Open position.
- H. Leak Sensor: Dry, not touching water. Drain pan installed for sensor/shutoff valve function.
Operating Instructions
Hydrogen Gas Caution
Hydrogen gas can accumulate in systems not used for two weeks or more. It is extremely flammable. To dissipate, open a hot water faucet for several minutes before using electrical appliances connected to the hot water system. DO NOT smoke or use open flames near the faucet.
Safety Precautions
- Disconnect power if subjected to overheating, fire, flood, or damage.
- DO NOT turn on the water heater unless it is filled with water.
- DO NOT turn on if the cold water supply shut-off valve is closed.
- If unsure about operating instructions, consult a qualified person.
Safety Controls
The water heater has a temperature limiting control (ECO) that breaks the power circuit if the temperature becomes excessively high. It must be reset manually. The cause of the high temperature must be investigated by a qualified technician before resetting.
To reset the ECO: Disconnect power, remove cover/insulation, press the red RESET button, then replace components before restoring power.
Water Temperature Setting
⚠️ DANGER: Hot water scald potential if thermostat is set too high. Households with small children, disabled, or elderly persons may require a 120°F (49°C) or lower setting.
The temperature can be regulated via the control display. Lower settings save energy. The factory setting is 120°F (49°C) or less, as required by local codes. Temperatures above 125°F (52°C) can cause severe burns.
Mixing valves are recommended for reducing point-of-use temperature. See page 3 for details.
Local Startup - User Interface
The control panel features buttons for ON/OFF, CLEAR ALARM, WiFi, ENTER, MODE, and NEXT. Indicators show Current Mode, Wi-Fi status, Faults, Scroll availability, Scald Warning, and Enable/Disable status.
Diagram shows the control panel with labels for buttons and indicators. A list explains the function of each icon.
Enabling / Disabling Unit
Press the "ON/OFF" button to turn the unit on or off. The unit may be disabled upon initial startup.
Adjusting Temperature
Use the "UP" or "DOWN" arrows to increase or decrease the temperature. A scald warning will appear at 120°F (49°C) and higher.
Change Mode of Operation
Press the "MODE" button to select operating mode: Heat Pump (High efficiency, Very Slow recovery) or Vacation (Very High efficiency, None recovery).
Setting Menu
Press "NEXT" to access settings. Scroll through menu items using "NEXT":
- ALARM BEEP: Enable/Disable sound.
- TEMP DISPLAY: Change units (°F or °C).
- CURRENT ALARMS: Scroll and clear alarms.
- ALARM HISTORY: Scroll through past alarms.
- CLEAR HISTORY: Press ENTER to clear.
- MAC ADDRESS: WiFi MAC Address.
- NETWORK INSTANCE: Change if needed.
- SOV INSTALLED: Indicates if a Shut-Off Valve is installed.
WiFi Setup
Press and hold the WiFi button for 5 seconds to start setup. The WiFi LED blinks. A signal broadcasts for 30 minutes. Once connected, the LED turns solid blue.
WiFi Soft Reset: Hold WiFi button for 3 seconds to reconnect to the same network.
WiFi Hard Reset: Hold WiFi button for 5 seconds to reset for a new network, then follow setup steps.
EcoNet App 2.0 Instructions
Download the EcoNet app, create a profile, and log in. Select "Add Product" on the main screen. Add location information. Place the water heater in WiFi setup and click "Continue". Select your WiFi module's MAC address from the network list. Connect to your home network by entering the password. Once connected, the product home screen is displayed.
Care and Cleaning
Draining the Water Heater
⚠️ CAUTION: Shut off power before draining.
⚠️ DANGER: Water can be hot enough to cause scalds. Ensure no one is exposed to released water. Direct to a suitable drain.
To drain: Turn off cold water supply. Open a hot water faucet or lift the relief valve handle to admit air. Attach a garden hose to the drain valve and direct to a drain. Open the drain valve.
Routine Preventative Maintenance
Regular maintenance ensures dependable service.
- Noise: If hissing or singing sounds increase excessively, contact a qualified technician.
- Relief Valve Test: At least annually, lift and release the relief valve lever to ensure it operates freely. Allow several gallons to flush to a drain.
- Filter Cleaning: Clean the heat pump filter when the "Clean filter reminder" alert appears. Wash with mild detergent, dry, and replace.
- Condensate Drain: Annually, pour a cup of bleach into the condensate drain opening to kill algae/mildew. Ensure free flow; unclog if needed.
- Tank Draining: Drain a few quarts monthly to remove sediment and hard water deposits.
- Water Hammer: Rapid faucet closing can cause banging. Install risers or arresting devices if needed.
Diagram shows the location of the vertical flexible filter and filter handle on the heat pump unit.
Vacation and Extended Shut-Down
For extended idle periods, turn off power and water to conserve energy and prevent hydrogen gas buildup. Drain the unit and piping if subject to freezing temperatures.
After long shut-down, have operation and controls checked by qualified personnel. Ensure the tank is completely filled before restarting.
Anode Rod
The anode rod prolongs the life of the glass-lined tank by minimizing corrosion. DO NOT remove the anode rod, as this will shorten tank life and void the warranty.
NOTICE: High sulfate/mineral content water can produce a hydrogen sulfide (rotten egg) odor. Chlorination of the water supply may minimize this.
Troubleshooting Tips
Save time and money! Review these charts before calling for service.
Before You Call For Service
| Problem | Possible Causes | What to Do |
|---|---|---|
| Rumbling noise | Water conditions (scale/mineral buildup) | Allow a few quarts of water to run from the drain valve to remove sediment. |
| Relief valve producing popping noise or draining | Pressure buildup from thermal expansion in a closed system | This is unacceptable. Contact water supplier or plumber. DO NOT plug the relief valve outlet. |
| Not enough or no hot water | Water usage exceeded capacity | Wait for the water heater to recover. |
| Fuse blown or circuit breaker tripped | Replace fuse or reset circuit breaker. | |
| Electric supply may be off | Confirm electric supply; see installation section. | |
| Thermostat set too low | See Water Temperature Setting section. | |
| Leaking or open hot water faucets | Make sure all faucets are closed. | |
| Electric service interrupted | Contact the local electric utility. | |
| Improper wiring | See Installing the water heater section. | |
| Manual reset limit (ECO) | See Temperature regulation section (Page 3). | |
| Cold water inlet temperature colder in winter | This is normal; colder water takes longer to heat. | |
| Insufficient air exchange for Heat Pump | If air temp drops > 15°F (8°C), more air circulation is needed. | |
| Water is too hot | Thermostat set too high | See Temperature regulation section. |
⚠️ CAUTION: Do not attempt repair of electrical wiring, thermostats, or safety devices. Refer repairs to qualified service personnel.
Troubleshooting Alarm Codes
The water heater beeps for Alarms and shows a icon. To determine the code:
- Press "Next" until "Current Alarm" is visible.
- Press the "Down" arrow to scroll through active alarms.
| Code | Troubleshooting Guide | Possible Causes | What to Do |
|---|---|---|---|
| A004 | Comp.Shutdown: Discharge-Suction Trip | Heating source defaults to elements due to compressor malfunction | 1. Confirm fan operation. Check fan continuity if not running. Replace fan if needed. If problem persists, replace control board (rare). 2. Confirm filter screen is clean. 3. Inspect compressor for refrigerant leaks. If compressor is non-operational or leaking, unit needs replacement (sealed system parts not serviced). |
| A005 | Compressor Shutdown: Discharge Temp High | ||
| T005 | Compressor Shutdown: Discharge Temp High | ||
| A006 | Suction Temperature Too Low | Heating source defaults to elements due to low airflow | 1. Check wiring and sensors. 2. Check thermistor Ohm readings (see Ohm chart). 3. Check display for sensor readings (-40°F = open circuit, +250°F = shorted). Power down unit and unplug thermistor to confirm reading. |
| T006 | Suction Temperature Too Low | ||
| T009 | Compressor wiring may be faulty | Heating source defaults to elements due to compressor malfunction | 1. Check wiring and sensors. 2. Check thermistor Ohm readings (see Ohm chart). 3. Check display for sensor readings (-40°F = open circuit, +250°F = shorted). Power down unit and unplug thermistor to confirm reading. |
| A009 | Compressor wiring may be faulty | ||
| A101 | Suction Temperature Sensor Failure | Heating source defaults to elements due to heat pump temperature sensor malfunction | 1. Check wiring and sensors. 2. Check thermistor Ohm readings (see Ohm chart). 3. Check display for sensor readings (-40°F = open circuit, +250°F = shorted). Power down unit and unplug thermistor to confirm reading. |
| A102 | Ambient Temperature Sensor Failure | Ambient temperature is below freezing. --FREEZE WARNING | Select mode to enable heater (Turn it on). |
| A103 | Lower Heater Temp Sensor Failure | Lower tank temperature sensor malfunction. Heater disabled. | 1. Check wiring and sensors. 2. Check thermistor Ohm readings (see Ohm chart). 3. Check display for sensor readings (-40°F = open circuit, +250°F = shorted). Power down unit and unplug thermistor to confirm reading. |
| A104 | Upper Heater Temp Sensor Failure | Heating source defaults to elements due to heat pump temperature malfunction. | 1. Check wiring and sensors. 2. Check thermistor Ohm readings (see Ohm chart). 3. Check display for sensor readings (-40°F = open circuit, +250°F = shorted). Power down unit and unplug thermistor to confirm reading. |
| A105 | Evaporator Temp Sensor Failure | ||
| A106 | Discharge Temp Sensor Failure | Heating source defaults to elements due to heat pump temperature malfunction. | 1. Check wiring and sensors. 2. Check thermistor Ohm readings (see Ohm chart). 3. Check display for sensor readings (-40°F = open circuit, +250°F = shorted). Power down unit and unplug thermistor to confirm reading. |
| A107 | Water Detected on Floor: Check For Leaks | Water is detected in the drain pan | 1. Check for obvious water leaks. If not present, disconnect rope sensor from board. If code clears, dry or replace sensor. 2. If error persists, replace board. 3. Press and hold "Clear Alarm" for 5 seconds to override for 24 hrs. |
| A108 | Condensate Blocked: Unclog Line | Heating source defaults to elements due to condensate drain blockage | 1. Remove top cover. Inspect condensate line for blockage. Clear if necessary. 2. If water is present, locate and unlock blockage. 3. Ask customer where condensate is routed. If pan is dry and no blockage, replace condensate sensor. |
| A130 | Unit Off/Air Temp Freezing: Enable Unit | Ambient temperature is below freezing. --FREEZE WARNING | Select mode to enable heater (Turn it on). |
| T131 | Clean Filter Reminder | Air filter routine maintenance reminder | 1. Set mode to Electric or OFF. 2. Wash air filters with mild detergent, dry, and reinstall. 3. Set unit to desired mode. |
| T132 | Water Heater difficulty satisfying demand | Water heater can not satisfy demand | 1. Check for open faucets. 2. Check for water leaks. 3. If none present, unit may be improperly sized. |
| A120 | Shutoff Valve Can't Close Error | Shut-Off Valve malfunction | 1. Check wiring connections. 2. Unplug and plug back the Shut-Off valve. 3. If alarm persists, call customer service. |
| A121 | Shutoff Valve Can't Open Error | ||
| A122 | Shutoff Valve Inputs in Error | ||
| A123 | Shut-Off Valve Not Installed | ||
| A200 | High Water Temp! [ECO] Call Tech Service | ECO Tripped. Heater Disabled | 1. Disconnect power. 2. Check elements from screw to ground. 3. Check thermistor resistance. 4. If issue is not elements or thermistor, replace board. |
| T300 | Water vor Not Installed | Water Leak Sensor Not Installed | 1. Check water leak sensor installation. 2. Check wiring connections. 3. Check sensor resistance to determine if sensor or board needs replacement (See ohm reading chart). |
| A502 | Time Clock needs to be programmed | Controller malfunction. Heater disabled. | Replace Control Board |
| A503 | Time Clock not advancing time properly | ||
| T504 | WiFi Chip Communication Error | ||
| A900 | Controller Fault: Call Tech Service | Controller malfunction. Heater disabled. | Replace Control Board |
| T901 | Controller Fault: Call Tech Service | ||
| A902 | Controller Fault: Call Tech Service | ||
| A903 | Controller Fault: Call Tech Service | ||
| A904 | Controller Fault: Call Tech Service | ||
| A905 | Controller Fault: Call Tech Service | ||
| A906 | Power Board Temp. Protection Sensor Failure | Controller getting too hot. | Replace Control Board |
Customer Service and Parts
CTA Module Wiring
Power cord should be plugged into a properly grounded receptacle. Never plug into a circuit loaded beyond half its rating. A qualified electrician is needed for different wiring. All wiring must conform to local codes and the National Electrical Code (ANSI/NFPA 70).
NOTICE: A CTA2045 compliant Module can connect to the water heater's top connector. Follow instructions from the CTA2045 Module supplier.
Diagram shows the water heater junction box with conduit connector and CTA adapter.
JA13 Offline Schedule Setting & Battery Replacement
For Utility Contractor Use Only: Before uploading JA13 offline schedule, power on the water heater, press and hold WiFi button for 5 seconds. WiFi LED blinks, broadcasting for 30 minutes for setup via EcoNet Contractor Portal/Application. Once complete, the Demand Response Icon will light up.
To override JA13 schedule: Press MODE button to change to desired mode/set-point for up to 72 hrs. Demand Response will resume schedule after override time elapses. To opt-out completely, contact your utility company.
To replace battery: Remove front cover, remove BR2032 battery, replace with approved BR2032 cell coin battery, reinstall cover.
Demand Response (CTA-2045/JA13) Installations
A factory-installed thermostatic mixing valve (ASSE 1017) is set to 120°F (49°C) with +/- 5°F tolerance. Adjusting the valve may cause scalding; technician service is recommended. The valve should be checked annually by a plumber/technician. A filter or strainer is recommended for poor water quality. Check temperature at the same outlet used for commissioning; service is needed if off by more than 5°F.
Diagram shows the water heater with callouts for Hot Water Outlet, Factory Installed HydroBoost Kit, and Cold Water Inlet.
Replacement Parts
Instructions for Placing an Order: Address orders to the distributor or store where purchased. Include model/serial number (from rating plate), voltage/wattage, and part description/number.
⚠️ WARNING! Flammable contents under pressure. Compressor is not serviceable.
⚠️ CAUTION: Do not attempt repair of electrical wiring, heat pump, or electronic controls. Refer to qualified service personnel.
Diagram shows a water heater with various parts labeled: Air Filter, CTA Module, Capacitor, HydroBoost Kit, Controller Assembly, Faceplate, Upper Thermistor & ECO, Thermistor Bracket, Relief Valve, Shutoff Valve, Cavity Covers, Drain Valve.
| Part Number | Description | Part Number | Description |
|---|---|---|---|
| AP20142 | Air filter | SP21198 | Fan motor |
| AP11526S-2 | AP22049 | Diffuser | |
| AP11526T-2 | Anode | AP22073 | J outlet tube |
| AP11526W-2 | AP18944D | Rope water sensor | |
| AP22052 | Capacitor (40 uf) | AP14837G | T&P valve |
| AS49422-AE | Cavity cover | AP22026A | Hydroboost |
| AS49604-AE | AP22026B | Hydroboost | |
| AP20947N | Characteristic plug | AP22026C | Hydroboost |
| AP20947P | AP18087 | Thermistor | |
| AP20947L | AS49240 | ECO assembly | |
| AP20947M | AP20180 | Shutoff valve | |
| AP20624 | AP20590 | Compressor harness | |
| AP20625 | CTA housing (2 pcs) | AP18296 | Sanhua Coil - harness |
| AP20946 | Condense sensor | AP20509 | HP thermistor harness |
| AP21924 | Control board | AS49771A | Mixing valve cover |
| AP21098 | Current sensor | AS49771B | |
| AP21666 | Power cord | AS49771C | |
| AP21641 | Tank thermostat cover | ||
| AP16830D | Drain valve |
Cavity Insert Instructions
Intended for qualified service personnel only. To replace ECO/thermistor: Disconnect power, remove jacket access panel(s) and insulation, replace component, then reassemble. The cavity insert crossbar is for manufacturing only and does not affect operation.
Wiring Diagram
The wiring diagram details component codes, wiring information, and wire color codes for the water heater's electrical system.
Diagram shows a complex electrical wiring schematic for the water heater, including component codes and wire color codes.
If You Need Service
1. First, contact your installer, plumbing contractor, or agreed-upon service agency. If unavailable, consult local directories or utility for qualified assistance.
2. If the problem is not resolved, contact the Manufacturer's National Service Department:
800 Interstate Park Drive
Montgomery, Alabama 36109
Phone: 1-800-432-8373
When contacting the manufacturer, have the following information ready:
- Model and serial number (from rating label).
- Address where the water heater is located.
- Name/address of installer and service agency.
- Date of original installation and service dates.
- Details of the problem.
- List of people contacted regarding the problem.
3. For issues with the WiFi Module/EcoNet App, contact EcoNet Customer Service:
Phone: 1-800-255-2388
Website: www.Rheem.com/EcoNet
Upgrade your Smart Home with EcoNet® and Rheem Smart Air and Water Products - Rheem - Rheem Manufacturing Company
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