Automatic Operation - Daikin FTK25JVE9 Service Manual

Si04-115
1.12

Automatic Operation

The unit automatically switches the operation mode to cooling or heating to maintain the room
temperature at the main unit setting temperature.
Detailed 1. Remote controller setting temperature is set as automatic cooling / heating setting
explanation of the
2. Main unit setting temperature equals remote controller setting temperature plus correction
function
3. Operation ON / OFF point and mode switching point are as follows.
4. During initial operation
However, in the automatic Powerful cooling/heating mode, the guard timer is set as follows to
prevent hunting in cooling / heating mode.
Main Function
temperature (18 to 30°C).
value (correction value / cooling: 0 deg, heating: 2 deg.).
Heating → Cooling switching point: Room temperature ≥ Main unit setting temperature
+2.5 deg.
Cooling → Heating switching point: Room temperature < Main unit setting temperature –
2.5 deg.
Thermostat ON / OFF point is the same as the ON / OFF point of cooling or heating
operation.
Room temperature ≥ Remote controller setting temperature: Cooling operation
Room temperature < Remote controller setting temperature: Heating operation
Heating /
cooling switching point
(Heating thermostat
OFF point)
Main unit setting
temperature
(Cooling thermostat
OFF point)
Cooling /
heating switching point
Cooling Heating
operation operation
With compressor capacity supplied
With no compressor capacity supplied
General Functionality
2.5 deg.
or higher
(1.5 deg.)
or higher
Less than
(1.5 deg.)
2.5 deg.
or higher
Cooling
operation
(R1918)
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