A.O. Smith CAHP-80 User Manual page 19

Heat pump water heater
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Press the 'Program' button again to finalize the start time and to start setting the end time. The end
time is set in the same manner as the start time. While setting this timing, the indicator lights for 'Timer
1' and 'Time Off' should be lit. For example, if the timer is set from 20:30 – 22:00, the setting panels
should look like these:
Setting the start time for timer 2
Setting the start time for timer 1
The directions for setting the second timer are the same as setting the first timer. The difference is that
while setting the second timer, ensure that the indicator light showing 'Timer 2' is lit before you press
and hold the 'Program' button to enter the setting mode.
Timer 1 adjustment period: 21:00 ~ 08:00
Timer 2 adjustment period: 12:00 ~ 21:00
To turn on both timers at the same time, press the 'Program' button until both indication lights for
'Timer 1' and 'Timer 2' are on. The 'AES' program and timer will not run simultaneously.
To view the timer settings, press the 'Program' button repeatedly to select either Timer 1 or Timer 2.
Press and hold down the 'Program' button for 3 seconds. The time that appears is the start time. Press
the 'Program' button again to show the end time. Press the 'Program' button again to exit the menu.
Heating modes
There are two heating modes in the system. Upon making a mode selection, the system will take 3
minutes to reprogram to your selection.
Efficiency mode: energy efficient heat pump heating
Hybrid turbo mode: heat pump and speed (element) heating
MAX and AES
Toggle the AES/►► button to activate either the MAX/►► mode, AES mode, or both. AES mode will
not run simultaneously with timers and will override them.
MAX is an A. O. Smith technology that allows users to get consistent hot water for long periods of time.
You can turn it on to cater for an unexpected surge in demand for hot water.
19

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