A.O. Smith CAHP-MC-38 Installation, Operation And Maintenance Instructions page 42

Operation
Move to " " by
EX-FACTORY
pressing the Up/Down button,
then press SELECT button to
start this process.
The " "
Manula Defrost
interface will be displayed
subsequently. Press YES
button to excute the reset
process or press the NO
button to cancel the process.
The reset command will be
sent to the MCB if YES button
is pressed in the previous step
and the UIM will display
"COMMAND SENDING
Press BACK button to return
to the previouse UIM
interface.
Note ：
After this operation,all the parameters of central controller (except for the heat pump quantity) will be
reset to the ex-factory settings.
Ex-Factory Rest
M A I N T E N A N C E S E T T I N G
A U X H E A T E R
A U X H E A T E R T Y P E
M A N U A L D E F R O S T
H P T E M P A D J
E X - F A C T O R Y R E S E T
S E L E C T
E X - F A C T O R Y R E S E T
Y E S
E X - F A C T O R Y R E S E T
"
...
M A I N T E N A N C E S E T T I N G
A U X H E A T E R
A U X H E A T E R T Y P E
M A N U A L D E F R O S T
H P T E M P A D J
E X - F A C T O R Y R E S E T
S E L E C T
Display
W I T H
T A N K L E S S
B A C K H E L P
A R E Y O U S R U E T O D O
T H E E X - F A C T O R Y R E S E T ?
N O
A R E Y O U S R U E T O D O
T H E E X - F A C T O R Y S E T ?
C O M M A N D S E N D I N G ...
E X - F A C T O R Y R E S E T
A R E Y O U S R U E T O D O
T H E E X - F A C T O R Y S E T ?
S U C C E E D E D ！
W I T H
T A N K L E S S
B A C K H E L P
Description
0 ℃
The reseting is
successful if the UIM
display "SUCCEEDED!".
If the UIM display
"FAILED!", it indicates
the reseting is
unsuccessful, please
check the
communication
Between the control
board and display board
of the central controller.
0 ℃