Cooling / Heating Standby Operation At Startup - Daikin FTX25JVEA9 Service Manual

System control
3.4

Cooling / Heating Standby Operation at Startup

Purpose of the To prepare for the next startup after operation shutdown and to collect refrigerant into the
receiver in order to prevent liquid refrigerant from returning to the accumulator and compressor
Function
at startup.
Standby Operation
Cooling operation
4-way valve
*Command
frequency at power
ON or mode change.
Command
frequency
4-way valve
operation security
Outdoor unit upper
fan
Outdoor unit lower
fan
EVP
EVL
EVG
Each room motorized
valve
Guard timer for thermostat
ON repetition prohibition
Timer for suction overheat
judgement prohibition
Suction overheat judgement
Suction pressure judgement
0
70sec.~2min. judgement
Standby max. time
112
OFF
30Hz
62Hz
90sec
775rpm
715rpm
450 pulses Fully opened
450 pulses Fully opened
0 pulses Fully closed
0 Nm³/hr Fully closed
1 min
70sec
0
SH ≥ 15˚C
0
LP ≤ 1kg/cm²G
2 min
Heating operation
ON
30Hz
41Hz
90 sec
775rpm
715rpm
450 pulses Fully opened
0 pulse Fully closed
450 pulses Fully opened
0 Nm³/hr Fully closed
1 min
70sec
SH ≥ 15˚C
LP ≤ 1kg/cm²G
2 min
Si18-201
(M1005)
Main Functions