Rheem HB Series Use & Care Manual page 14

Basic Water Heater Operation
Operating Mode
Press the "Mode" button to utilize the five major
modes of operation: The active mode is displayed
on the top of the screen
Heat Pump Only
This mode will heat with compressor
operation only and will not use any
electric heat during typical heating and
demand cycles. This mode will minimize power
consumption.
Energy Saver - Factory set mode for shipping.
This mode optimizes compressor and electric
heat that results in water heater performance
that meets Energy Star requirements.
As a result, compressor operation will be
maximized and use of electric heat will be
minimized.
Settings
The Settings Screen allows the following changes:
The Display Units: The temperature display on the Home Screen can be set to Fahrenheit or Celsius
Home Screen Lock: The Home Screen can be locked to eliminate accidental changing of the Mode or
Temperature
Beep on Alarm: The audible Alarm tone can be disabled during service periods
Service
The Service screen provides information on the current status, product description, diagnostics, testing, tem-
perature readings, and alarms. Alarm details can be found in the "Troubleshooting Alarm Codes" section of the
manual.
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High Demand
This mode will maximize the performance
of the water heater while still providing good
energy savings.Water heater operates with
simultaneous compressor and electric heat.
Electric Only
This Mode will heat with the electric
resistance elements. This mode should only
be used during compressor maintenance
periods. This mode will result in maximum power
consumption.
Vacation
This mode will allow duration setting
between 2 and 28 days or set indefinitely
with the "Hold" setting. Tank temperature
will be maintained at about 82º F. Only compressor
operation will be allowed as needed.