Mitsubishi Electric CAHV-R450YA-HPB Service Manual page 93

Hot water heat pump
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[ VII Control ]
(2) Scheduled operation
Up to three sets of start/end times can be assigned for each day.
To operate the units according to the schedule, set the item code 5 to "1", and set the time for item codes 1 and 6
through 9.
Note
The operation schedule function will operate only when SWS1 is set to "REMOTE."
Setting procedures
Step 0
Set the ON/OFF
switch (SWS1) to
OFF.
Step 1
Set the dip switches
SW5 and SW6.
Step 2
Select the desired
item with the push
switch SWP3.
Step 3
Press the push
switches SWP1 ( )
or SWP2 ( ) to
increase or
decrease the value.
Step 4
Press the push
switch SWP3 to
save the change.
Note
A mode (preset temperatures) can be selected for each operation time period. Refer to page 85 for
how to make the settings.
Note
If Code 5 is set to "1," lock the remote controller's schedule function.
HWE22020
Set SWS1 to OFF from the remote controller or with the local switch.
Settings cannot be changed unless the ON/OFF setting is set to OFF. *
Set the dip switches on the circuit board as follows before making the settings for the items
described in this section.
SW5
SW6
10
5
6
7
OFF
OFF
OFF
OFF
Item codes 1, 5 through 9, 18, and 19 relate to scheduled operation setting.
Set the item code to 1, and set the time for each of the relevant items.
Press the push switch SWP3 to select an item code.
Use the push switches SWP1 and SWP2 to change the value of the selected item.
The value will keep blinking while it is being changed.
Settings table
Settable item
C
r u
e r
t n
i t
m
e
Enable or disable scheduled
operation (ON/OFF)
Operation start time 1
Operation end time 1
Operation start time 2
Operation end time 2
Operation start time 3
Operation end time 3
Press SWP3 once within one minute of changing the setting with SWP1 or SWP2 to save the
setting.
Once the new setting is saved, the display will stop blinking and stay lit. The display will, then,
return to the item code display mode.
If SWP3 is not pressed within one minute, the change will not be saved and the display will
return to the item code display mode.
8
9
10
OFF
ON
OFF
Item
Initial
Unit
code
value
1
0
0
0
0
H
o
u
: r
m
n i
u
Enable: 1
5
0
Disable: 0
6
0000
Hour: minute
7
0000
Hour: minute
8
0000
Hour: minute
9
0000
Hour: minute
18
0000
Hour: minute
19
0000
Hour: minute
- 84 -
Limits and increments
Increments
Lower limit
e t
1
m
n i
u
e t
0
0
0
0
1
0
1 minute
0000
1 minute
0000
1 minute
0000
1 minute
0000
1 minute
0000
1 minute
0000
Upper limit
2
3
5
9
1
2359
2359
2359
2359
2359
2359
GB

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