Adjusting the User Interface Module/Operational Modes
Water Temperature Adjustment
The water temperature can be adjusted from 95°F to 150°F.
Use the Up and Down Buttons 
on the front panel to set the desired temperature.
IMPORTANT: Before attempting to adjust the thermostat, read the “Water Temperature Regulation” section. If the instructions are not clear, contact a qualified person.
IMPORTANT: Filling a spa or hot tub from this water heater may result in extended
Operating Mode Descriptions
The operating modes can be changed by touching the desired mode icon on the User Interface Module (see Figure 10.)
NOTE: All buttons on the User Interface are touch sensitive and require only a light touch to actuate.
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| Efficiency Mode - Is the most energy efficient |
EFFICIENCY | mode. This mode uses the heat pump to heat water | ||||
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| in the tank. The elements are not used unless the |
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| ambient operating temperature is below 45°F or |
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| above 109°F. If hot water demands are not met in |
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| Efficiency Mode it may be necessary to switch to |
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| Hybrid Mode. |
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| Hybrid Mode (recommended setting) - Combines |
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HYBRID | high energy efficiency with reduced recovery time. | ||||
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| This mode uses the heat pump as the primary |
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| heating source. The heating element will heat |
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| water if demand exceeds a predetermined level so |
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| that the set point temperature can be recovered |
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| more quickly. |
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| Electric Mode - The water heater functions as a |
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ELECTRIC | conventional electric unit, relying totally on the | ||||
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| elements to heat the water in the tank. This mode |
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| may be useful in winter to eliminate the output of |
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| cold air from the unit. |
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| Vacation Mode - The controller adjusts the water |
VACATION | temperature to approximately 60°F. This mode is | ||||
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| recommended when the water heater is not in use |
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| for a long period of time. This mode minimizes |
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| energy consumption and prevents the water heater |
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| from freezing during cold weather. |
Other Controls
Lock - Holding this button for more than 3 seconds switches the lock mode on or off. When the User Interface Module is locked a symbol and “Lock” text will be visible on the display (see Figure 10).
°F/°C °F/°C - The button switches the display to show the set temperature in Fahrenheit or Celsius.
Figure 10 User Interface Module
Operational Mode Buttons
| EFFICIENCY | HYBRID | ELECTRIC VACATION | Water |
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| Temperature |
Element |
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| Set Point |
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Functioning |
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| F | Water Heater |
Icon |
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| Mode/Status | |
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| Indicator |
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| Water Heater |
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| Efficiency Status |
Heat Pump |
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| Icon |
HEAT PUMP | ELEMENT | LOCK EFFICIENCY |
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Functioning |
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Icon |
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| LCD Control |
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| °F/°C |
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| Panel Lock Icon | |
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Temperature |
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| Temperature |
Up (Increase) |
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| Down (Decrease) |
Button |
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Fahrenheit/Celsius | LCD Display Panel | |
Temperature Display | ||
Lock Button | ||
Button | ||
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Power Button: On - Green | ||
| Standby - Red | |
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