12
SYSTEM OPERATION
A system test is now required to check the equipment set-
tings and functionality. Once selected, it checks the equip-
ment for approximately 5 - 15 minutes. System test may
exceed 15 minutes if there is an error. Refer to the Trouble-
shooting section, if error code appears. Before starting the
NOTE: If the unit is attempting to run SYSTEM TEST in un-
der 20° F ambient temperature, the unit may not be able to
complete the test due to low suction pressure. In such a
case, re-run the SYSTEM TEST when the ambient tempera-
ture exceeds 20° F.
SET THERMOSTAT TO CHARGE MODE
If required additional charging amount cannot be charged to
the system without operation, then use this “CHARGE MODE".
When adjusting "Sub-cooling", use this "CHARGE MODE".
CHARGE MODE allows for charging of the system. System op-
erates for a duration of approximately one hour while the equip-
ment runs at full capacity. After one hour, the CHARGE MODE
ends and the system resumes normal thermostat operation.
BOOST MODE
BOOST MODE enables the system to operate at a higher
compressor speed than rated maximum compressor speed
ambient outdoor conditions. BOOST MODE is initiated by
an outdoor temperature sensor located in the outdoor unit.
Please note that outdoor equipment operational sound lev-
els may increase while the equipment is running in BOOST
MODE. Disabling BOOST MODE will provide the quietest
NOTE: BOOST MODE applies to DX20VC0**1AC or later
-
tive when paired with an electronic expansion valve enabled
indoor unit.
BOOST MODE is ON by default and is activated when the
outdoor temperature reaches 105° F. BOOST MODE can
be disabled and enabled and the activation temperature ad-
justed.
For detailed procedure to access the these functions, please
visit the Daikin One+ Smart Thermostat website at http://
www.daikinone.com. If using a CTK04 thermostat, please
see the addendum for further instructions.
The thermostat reads the indoor humidity level and allows
settings. The thermostat controls the humidity level of the
-
tion is engaged whenever a cooling demand is present and
structural humidity levels are above the target level. When
this condition exists, the circulating fan output is reduced,
increasing system run time, over cooling the evaporator coil
and ultimately removing more humidity from the structure
than if only in cooling mode. The thermostat also allows for
an additional overcooling limit setting from 0°F to 3°F setup.
This allows the cooling system to further reduce humidity by
lowering the temperature up to 3°F below the cooling set-
point in an attempt to better achieve desired humidity levels.
•
- For detailed procedure to access this function,
please visit the DAIKIN ONE+ Smart Thermostat
website at http://www.daikinone.com. If using a
CTK04 thermsostat, please see the addendum for
further instructions.
•
- See the Cool Set-up section of the Installation
-
•
is comfortable for the application from a range of Cool
• -
cation operation in setting "A", "B", or "C" of "Dehumid-
• See the DEHUMIDIFICATION SELECT section for more
detail.
For details, see the Installation Manual or Service Manual that
matches the Major and Minor revision of model name.
Daikin One+ System Advanced Features
The Daikin One+ system permits access to additional system
information, advanced setup features, and advanced diag-
nostic / troubleshooting features. These advanced features
are organized into a menu structure. For detailed functions
and menu layout, please visit the Daikin One+ Smart Thermo-
stat website at http://www.daikinone.com. (If using a CTK04
thermostat, please see the addendum for further instructions.)
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