Rheem 3805 Series Owner's Manual And Installation Instructions page 18

The clock is on 24 hour notation. When a fault occurs an error code will be displayed in place of the
clock.
During controller setup the temperature display will flash. This indicates the current set point
temperature rather than current tank temperature.
1. Buttons
a. Power: To switch on /off the system.
b. Up "▲"button: Each press of the up button will increase the setting value of the
parameter by one increment, while pressing and holding up the up button will scroll
setting value up.
c. Down "▼"button: Each press of the down button will decrease the setting value of
the parameter by one increment, while pressing and holding up the down button
will scroll the setting value down.
d. Electric Heating button: activate/deactivate the supplementary electric heating
element (in some cases).
e. OK button: Press to confirm the setup and the content of inquiry.
Set button: Press to begin programming of set-up parameters.
f.
2. Functions
a. ON/OFF: Press the ON/OFF button to switch on /off the system. When the system is
switched off the remote control will display the time only.
b. Temperature Setting: Switch on the system (factory preset temperature is 55
i. Press the UP or DOWN button to adjust the temperature setting (selectable
ii. Press the OK button to confirm the temperature setting.
c. Time setting: Time can be set with system on or off.
i. Press the SET button once to enter setup mode.
ii. Press SET again, the hour figure will flash.
iii. Press UP or DOWN button to adjust the hour (adjustable between 00 and
iv. Press the SET button once again to set the minutes, press UP button or
v. When finished, press the SET button to exit setup mode.
d. Supplementary electric heating: The electric heating system is set to operate
automatically when the ambient temperatures drop below 5
the element cannot be switched off manually); when ambient temperature exceeds
o
5 C the electric heating will automatically be deactivated and Heat Pump will begin
to operate normally.
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temperature range is 30～65
23).
DOWN button to adjust the minutes (adjustable between 00 and 59).
o
C).
o
C).
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C (when in this mode