Forced Operation Mode - Daikin CTXS09GVJU Service Manual

SiUS12-814
3.13.4 Preventing Indoor Freezing
During cooling, if the heat exchanger temperature in the room with stopped operation drops below
the specified temperature for the specified time, open the electronic expansion valve in the
operation stopped room as specified, and carry out the fully closed operation. After this, if freezing
abnormality occurs more than the specified time, the system is forced off due to the abnormality.

3.14 Forced Operation Mode

Outline Forced operating mode includes functions such as: forced cooling, forced heating, incorrect wiring,
incorrect piping check.
Operating mode must be selected by operating the forced-operation switch.
Detail Forced Cooling, Forced Heating (Only for Heat Pump Model)
Forced-operation
Starting / adjustment If the forced operation switch is
1) Determine
2) Command
3) Electronic
4) Outdoor unit
5) Indoor unit
End
Others
Function and Control
Item
1) The indoor unit is not abnormal, but
conditions the indoor unit which is not in the
freezing prohibiting zone is present
in more than 1 room.
2) The outdoor unit is not abnormal
and not in the 3-minute standby
mode.
3) The operating mode of the outdoor
unit is the stop mode.
4) The slide selection switch of the
forced operation is the cooling
mode.
The forced operation is allowed during
the above circumstances when not in
the 3-minute standby mode.
pressed as the above conditions are
met.
All rooms
operating room
2YC45: 42 Hz
frequency 2YC63: 31Hz
It depends on the capacity of the
expansion valve operating indoor unit.
opening
Compressor is in operation.
adjustment
The command of forced operation is
adjustment transmitted to the indoor unit.
1) When the forced operation switch is
pressed again.
2) The operation is to end
automatically after 15 min.
The protect functions are prior to all
others in the forced operation.
Forced Cooling
Control Specification
Forced Heating
1) The indoor unit is not abnormal.
The indoor unit which is not in the
peak-cut prohibited zone is present
in more than 1 room.
←
←
4) The slide selection switch of the
forced operation is the heating
mode.
The forced operation is allowed during
the above circumstances when not in
the 3-minute standby mode.
←
1 room operation, with the room that
can enable operation and its
number is the smallest
(A>B>C>D). Other rooms operation
must be stopped.
2YC45: 35 Hz
(Outdoor air temp: 35.6°F)
2YC63: 26Hz
(Outdoor air temp: 35.6°F)
←
←
←
←
2) The operation is to end
automatically after 60 min.
←
55