– 18 –
No.
Item
Specification
Remarks
9
Defrosting
control
• For defrosting
commencement
conditions, see 5
Control Outline “7.
Defrosting control
(reverse defrosting
method)” in SMMS-i
Outdoor Unit Service
Manual A10-005
above.
While the outdoor unit is engaged in defrosting control, thehot water modules
perform the following control tasks:
1) Close the hot water module PMV to a certain degree and open the SV valve.
As defrosting control comes to an end, it gives way to heating refrigerant (oil)
recovery control.
(For control details, see “Heating refrigerant (oil) recovery control” above.)
10
Short intermittent
operation
compensation
control
1. For 5 minutes after startup, the system is forced to continue operating even if it
reaches the thermo OFF region.
2. However, priority is given to cooling / heating selection, operation standby, and
protective control, so that there is no overriding of thermo OFF in these cases.
11
Operation
standby
Heating standby
• “OPERATION
STANDBY ”
displayed
• “HEATING
STANDBY ”
displayed
<Operation standby> .......... Displayed on remote controller
1. When any of the DN codes listed below is displayed
• “P05” - Detection of an open phase in the power supply wiring
• “P10” - Detection of indoor flooding in at least one indoor unit with the exception of
the hot water module.
• “L30” - Detection of an interlock alarm in at least one indoor unit
2. The system is engaged in a heat refrigerant (oil) recovery operation.
<Heating standby> .......... Displayed on remote controller
1. Normal thermo OFF
• During heating, the indoor unit goes thermo OFF as the heating temperature
setting is reached.
2. Forced thermo OFF
• “HEAT” operation is unavailable because at least one indoor unit is operating in
“COOL / DRY” mode .
12
Selection of
central control
mode
• In the case of a wired
remote controller,
“CENTRAL
CONTROL IN
PROGRESS ” is
displayed (lit up)
while in central
control mode.
• The display blinks
when a control
function inaccessible
to a remote controller
is chosen.
1. The range of operations that can be performed via an indoor unit remote controller
can be determined through the setting of the central controller.
2. Setting details
TCC-Link central control
