Daikin VRV RXYQ72-384XAYCA Service Manual page 127

SiUS342004EB
Note(s)
When the indoor unit is FXFQ-AA, FXFQ-T, FXZQ-TA, FXZQ-TB, FXUQ-P, or FXUQ-PA, if the air
outlet is set as dual-directional or tri-directional, the starting conditions will be changed as follows.
Liquid pipe temperature ≤ 1°C (33.8°F) (for total of 15 minutes)
or
Liquid pipe temperature ≤ 0°C (32°F) (for 1 minute continuously)
During freeze-up prevention control, the airflow rate is fixed to LL.
(The cancelling conditions are same as the standard.)
Liquid pipe
temperature
Part 4 Functions and Control
+7ºC
(44.6˚F)
0ºC
(32˚F)
1 min.
OR
+7ºC
(44.6˚F)
+1ºC
(33.8˚F)
t1 t2
Freeze-up prevention control
Forced OFF by thermostat
Start
Freeze-up prevention control
Forced OFF by thermostat
t3 t4 t > 15
Start
Outline of Control (Indoor Unit)
10 min.
Normal operation
Cancel
10 min.
Normal operation
minutes
Cancel
120