Note 1. Monitoring 1 performs the following for 60 seconds and detects the " Room temperature " from the point that
" Operation started ".
" Indoor unit fan motor " : S-LO
" Shunt controller discharge valve " : OFF
" Shunt controller suction valve " : OFF
" Shunt controller bypass valve " : ON
Note 2. Room temperature monitoring state.
If " Room temperature " ( TR ) is 2 lower than the " Set temperature " ( TS ) , " Heating " is decided and if it is higher than
2 , " Cooling " is decided.
The system operates at S-LO until the operation mode is decided as " Heating " or " Cool " .
This state is made monitoring 2.
Note 3. 2: [ deg ].
Note 4. When the system is in the " Refrigerant circulation stop " state continuously for 6 minutes after " Heating " or " cooling "
was decided, returns to a.
However ,this 6 minutes do not include " Refrigerant circulation stopped " by a protection function.
COOLING
HEATING
TS
+2
-2
Fig.7-10 Operation mode at " Automatic operation "
1 Previous Note 2. " Monitoring 1 " measures the room temperature ( TR ) and if it is " Set temperature TS +2 or less,
" Heating " is decided and " Refrigerant circulation " is started.
2 When TS -2 < TR < TS+2 at 1 , " Monitoring 2 " " Room fan motor " continues and monitoring of the room temperature
continues until " Cooling " or " Heating " operation is decided.
3 When " Heating " or " Cooling " is decided, the respective operation is performed in accordance with " Room temperature
control " to be described later.
4 When " Refrigerant circulation stopped " by " Cooling " or " Heating " "Room temperature adjustment " continues for
6 minutes or more, the room temperature monitoring of 2 above is performed.
5 In the state of room temperature watching stated in the above 4 , the indoor unit fan motor shall be S-LO.
C
C
C
6 When " Set temperature " was changed.
A) When changed during " Monitoring 1 ", judgment if performed by means of the " Set temperature " newly input after the end
of " Monitoring 1 ".
B) When changed with in the previously mentioned Note 3 monitoring range, the newly input " Set temperature " is made TS.
C) When changed during " Cooling operation in progress " ( including " Refrigerant circulation stopped " for under 6 minutes by
" Room temperature adjustment " ) after " Cooling operation " decision, " Cooling operation " is continued with the newly
input " Set temperature " as TS.
D) When changed during " Heating operation in progress " ( including " Refrigerant circulation stopped " for under 6 minutes by
" Room temperature adjustment ") after " Heating operation " decision, " Heating operation " is continued with the newly
input " Set temperature " as TS.
7 After entering the room temperature monitoring state after the " Refrigerant circulation state " by " Room temperature
adjustment " has continued for 6 minutes, " Cooling Heating switching is performed even when in a temperature state
which switches " Cooling Heating " by "Set temperature " change.
– 67 –
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