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(1) Unit Controller display panel buttons - Setting modification buttons (UP/DOWN),
confirmation button (ENTER) and the return button (BACK).
The operation buttons (UP/DOWN and ENTER) and the 5-digit LED display on the unit controller
(UC) display panel can be used for operations such as; setting the temperature set-point,
monitoring the operational state and displaying the error log for the corresponding module.
When title appears
UP ·········· Go to the next display title.
DOWN ····· Go to the previous display title.
ENTER ···· Go to the detailed item.
When detailed item appears
UP ·········· Go to the next detailed item.
DOWN ····· Go to the previous detailed item.
BACK ······ Go to the display title.
When changing the setting value of a detailed item
UP ·········· Increase the setting value.
DOWN ····· Decrease the setting value.
ENTER ···· Confirm the setting value.
BACK ······ Go to the display title.
(2) Explanation of control mode switches (SW5, SW6, and SW9)
Use these DIP switches to configure the local control mode setting. Though the control mode
setting is configured at the factory, check the setting to ensure that it is compatible with local
conditions. Use SW5, SW6 and SW9 on the CPU control board to change the control mode.
Before changing it, turn off the power of the control circuit/pump breaker (CB1) inside the power
control box and check that the power of the CPU board is shut off. After configuring the setting of
each switch, turn the power back on.
(Note 1) Do not change the factory defaults.
However, SW6-7 need to be changed after water filling at the site.
(Note 2) The settings of a custom-made model may differ from the following configuration.
(Note 3) It is set according to the model.
SW5
SW6
ON
(Note 3)
Standard
OFF
(Note 3)
-
ON
(Note 3)
-
OFF
(Note 3)
Standard
ON
Both cooling and heating
Standard
OFF
Cooling only
-
ON
High EER type
-
OFF
Standard
Standard
ON
Integrated inverter
pump model
-
OFF
Pumpless model
Standard
ON
Antifreeze specifications
(Note 3)
OFF
Standard
(Note 3)
ON
(Note 3)
Pump operation disabled
OFF
(Note 3)
Pump operation enabled
ON
Standard
-
OFF
-
Standard
Description
4
5
6
7
8
Status
SW No.
1
2
3
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
* Switches 1 and 2 are not shown.
Note 1: Set switch 7 to OFF after water filling is
complete.
If it is set to OFF before water filling, the
pump will run idle in freeze protection mode
and may be damaged.
SW5 (Cooling-only module)
ON
OFF
SW5 (Cooling/heating module)
ON
OFF
SW6 (Cooling-only and cooling/heating modules)
ON
OFF
1 2 3 4 5 6 7 8