Functions Of Cooling Only Models; Cooling Monitoring Function; Functions And Control Part - Daikin FT25CV1A Service Manual

Functions of Cooling Only Models

1. Functions of Cooling Only Models

1.1

Cooling Monitoring Function

Monitoring function is activated while cooling and dry operation are suspended.
T
T
T
〈 A 〉 Cooling: temperature set by remote controller
〈 B 〉 Cooling: temperature set by remote controller +1°C
Even if the suction temperature remains in the differential range, the compressor repeats ON
and OFF.
DETAIL: When the suction temperature rises again to 〈 A 〉 (point b) after the suction temperature
is dropped to 〈 A 〉 and the compressor turns OFF (point a), the 5-minute timer starts.
After that, when the suction temperature is within the differential range, even after a lapse of 5
minutes, the compressor is forced to turn ON (point c).
When the suction temperature is still in the differential range, after another 4 minutes of
compressor ON, the compressor is forced to turn OFF (point d).
The 5 and 4-minute timers are effective only within the differential temperature range, and when
the air suction temperature is reached to 〈 B 〉 or 〈 A 〉 while the timers are counting, timers are
reset and the compressor is turned ON or OFF.
(Note, however, that function of placing the compressor in a 3-minute compressor recycling
guard timer is provided at point e.)
While the compressor is OFF, the indoor fan operation is controlled by the tap set by remote
controller during cooling mode.
In the dry mode, the indoor fan starts operating five seconds after the compression starts, and it
stops operating when the compressor shuts down.
22
〈B〉
〈A〉
T
OF
: Compressor recycling guard timer (3-minute timer)
OF
: 5-minute timer
M1
: 4-minute timer
M2
Dry: temperature at suspension
Dry: temperature set by remote controller
T
M1
T T T
M1 M2 M1
T or more
OF
T or less
M2
Si01-406
Compressor ON
Compressor OFF
Differential
or less
(R1882)
Functions and Control