Expansion Valve Control; Other Control - Fujitsu Airstage J-II Service Manual

2-3-4

Other Control

To accurately detect the outside air temperature, the fan is operated while the outdoor unit is stopped.

2-4 EXPANSION VALVE CONTROL

Initialization
conditions
EEV 1
When power
turned on
When operation
stopped
EEV 2
< Cooling mode >
500 pulses basically.
< Heating mode >
EEV is controlled so that the system reaches closer to the target discharge temperature that is calculated from
high and low pressure.
Operation mode
operation
Cooling
40 - 500 pulses
Heating
Cooling
55 - 500 pulses
Heating
02-08
Control range
stop
500 pulses
0 pulses
0 pulses