Minutes Standby; Compressor Protection Function - Daikin FTXG25CVMAW Service Manual

Si04-402A
3.3.2 Four Way Valve Switching
Outline of Heat Pump Only
During the heating operation current must be conducted and during cooling and defrosting
Heating
current must not be conducted. In order to eliminate the switching sound (as the four way valve
Operation
coil switches from ON to OFF) when the heating is stopped, the delay switch of the four way
valve must be carried out after the operation stopped.
Detail The OFF delay of four way valve
Energize the coil for 160 sec after unit operation is stopped.
3.3.3 Four Way Valve Operation Compensation
Outline Heat Pump Only
At the beginning of the operation as the four way valve is switched, acquire the differential
pressure required for activating the four way valve by having output the operating frequency,
which is more than a certain fixed frequency, for a certain fixed time.
Detail Starting Conditions
1. When starting compressor for heating.
2. When the operating mode changes to cooling from heating.
3. When starting compressor for rushing defrosting or resetting.
4. When starting compressor for the first time after the reset with the power is ON.
5. When starting compressor for heating next to the suspension of defrosting.
6. When starting compressor next to the fault of switching over cooling / heating.
Set the lower limit frequency to 68 (model by model) Hz for 45 seconds with any conditions 1
through 6 above.
3.3.4

3-minutes Standby

Prohibit to turn ON the compressor for 3 minutes after turning it off.
(Except when defrosting. (Only for Heat Pump Model).)
3.3.5

Compressor Protection Function

When turning the compressor from OFF to ON, the upper limit of frequency must be set as
follows. (The function must not be used when defrosting (only for heat pump model).)
Function and Control
FCG 3 88
FCG 2 64
FCG 1 48
TCG 1 240
TCG 2 360
TCG 3 180
Control Specification
31