Othercontrol; Other Control; Operation Of Solenoid Valves; Outdoor Unit Electronic Control Valve (Motor Valve) Control [Mov1] - Panasonic U-4LE1E5 Service Manual

4. Other Control

5. Operation of Solenoid Valves

6. Outdoor Unit Electronic Control Valve (Motor Valve) control [MOV1]

4. Other Control
4-1. Indoor Unit Self-Separator Oil Recovery Control
Refer to the indoor unit special control item.

5. Operation of Solenoid Valves

5-1. 4-way Valve Control
(1) OFF conditions
• At Cooling mode
• Special control (reverse cycle start control, inter systems refrigerant oil recovery control, reverse cycle defrost
control) is in effect.
(2) ON conditions
• At Heating mode

6. Outdoor Unit Electronic Control Valve (Motor Valve) Control [MOV1]

6-1. Power Initialization
The valve position is 480 pulses if the indoor unit has not started once after the power was turned ON.
Operation of the electronic control valve during normal unit operation
Indoor Unit Heat exchanger status
Condenser
Cooling
operation
Stop
Evaporator
Heating
operation
Stop
* SH control controls the difference between outdoor heat exchanger liquid temperature and suction
temperature to 1 – 5°C.
MOV1 position (pulses)
Maximum flow control
480
480 –
65 – Less than 480 SH (super heat) control
0
–
1 - 11
Mini VRF SYSTEM
Control Functions
Remarks
1