Table of Contents
Advertisement
5-2 HEAT EXCHANGE CAPACITY CONTROL
The heat exchanger capacity and four-way valve, solenoid valve, and electronic expansion valve operation states are shown below.
1. Cooling, mainly cooling
4-way valve (4WV)
Pattern
4WV2 4WV3 4WV4
1
OFF
ON
2
ON
OFF
3
ON
ON
4
OFF
ON
5
ON
OFF
6
OFF
OFF
2. Heating, mainly heating
4-way valve (4WV)
Pattern
4WV2 4WV3 4WV4
1
ON
ON
2
ON
ON
3
ON
ON
4
ON
ON
5
ON
ON
6
ON
ON
3. Stop and same capacity operation
4-way valve (4WV)
Pattern
4WV2 4WV3 4WV4
1
OFF
OFF
2
ON
ON
Solenoid valve
Electronic expansion
(SV)
SV7
SV8
EEV1
ON
ON
OFF
Control pulse
ON
OFF
ON
Control pulse
OFF
OFF
OFF
0 pulse
OFF
ON
OFF
Control pulse
OFF
OFF
ON
Control pulse
OFF
ON
ON
Control pulse
Solenoid valve
Electronic expansion
(SV)
SV7
SV8
EEV1
ON
ON
OFF
Control pulse
ON
OFF
ON
Control pulse
ON
OFF
OFF
0 pulse
ON
ON
OFF
Control pulse
ON
OFF
ON
Control pulse
ON
ON
ON
Control pulse
Solenoid valve
Electronic expansion
(SV)
SV7
SV8
EEV1
OFF
OFF
OFF
Control pulse
ON
OFF
OFF
0 pulse
Used heat
valve (EEV)
exchange (HP)
EEV2
2
0 pulse
0 pulse
Control pulse
Control pulse
Control pulse
Control pulse
Used heat
valve (EEV)
exchange (HP)
EEV2
2
0 pulse
0 pulse
Control pulse
Control pulse
Control pulse
Control pulse
Used heat
valve (EEV)
exchange (HP)
EEV2
2
Control pulse
0 pulse
– 45 –
Remarks
4
6
Cooling 2HP
Cooling 4HP
Cooling 6HP
Cooling 8HP
Cooling 10HP
Cooling 12HP
Remarks
4
6
Cooling 2HP
Cooling 4HP
Cooling 6HP
Cooling 8HP
Cooling 10HP
Cooling 12HP
Remarks
4
6
Stop
Same capacity
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
