Daikin RQYQ140-180PY1, Руководство по обслуживанию, Страница: 64 / 231

Detailed Control Functions SiBE341001
55 Function
• RQCEQ280 ~ 848PY1
"Reverse cycle defrosting (heating oil return)" and "Partial defrosting" are available depending on the combination of the
starting condition for units of this series.
Part Name
Electric
Symbol
Partial defrosting operation Reverse cycle defrosting (heating oil return)
Compressor M1C 124Hz
→
232 Hz 188 Hz
Outdoor unit fan M1F
Defrost unit: OFF
Heating unit: Fan control
OFF
Electronic expansion
valve (Main)
Y1E
Defrost unit: 480 pls
Heating unit: 4 pls
→
Low pressure control
480 pls
Electronic expansion
valve (Refrigerant
charge)
Y2E SH control SH control
Electronic expansion
valve (Subcooling)
Y3E
By "Adjusting control of the refrigerant
amount"
By "Adjusting control of the refrigerant
amount"
Solenoid valve
(Refrigerant regulator
hot gas)
Y1S
By "Adjusting control of the refrigerant
amount"
By "Adjusting control of the refrigerant
amount"
Solenoid valve
(Refrigerant regulator
liquid pipe)
Y2S
By "Adjusting control of the refrigerant
amount"
By "Adjusting control of the refrigerant
amount"
Solenoid valve
(Refrigerant regulator
gas vent pipe)
Y3S
By "Adjusting control of the refrigerant
amount"
By "Adjusting control of the refrigerant
amount"
Solenoid valve (Hot
gas)
Y4S ON ON
Solenoid valve (Circuit
of oil return)
Y5S OFF OFF
Four way valve (Heat
exchanger switch)
Y6S
Defrost unit: OFF
Heating unit: ON
OFF
Four way valve (Dual
pressure gas pipe)
Y7S
Defrost unit: ON
Heating unit: OFF
ON
Four way valve (Mixing
unit)
Y8S OFF OFF
Solenoid valve (Mixing
unit inlet)
Y9S OFF OFF
Indoor unit fan M1F
Thermostat ON unit: OFF
Others: No instruction
OFF
Electronic expansion
valve (Main)
Y1E 0 pls 1216 pls
→
Suction SH control
Ending condition
NO
NO
Normal heating operation
Partial defrosting operation
Reverse cycle defrosting
(heating oil return)
"Condition
to start defrosting"
has been met.
YES
YES
YES
NO
"Condition
to start heating oil
return" has been met
within 30
minutes.
"Condition
to start heating oil
return" has been
met.
End
End
[Defrost operation start conditions]
•
A lapse of every 2 hours during low-load operation
•
A lapse of every 1 hours during high-load operation
[Heating oil return operation start conditions]
•
2 hours after initial power ON
•
A lapse of every 1 ~ 2 hours during low-load operation
•
A lapse of every 8 hours during high-load operation
• Pc > 2.94 MPa
• Tb > 11˚C
• 12 min. passed
• 6 min. passed
• TsA-Te > 5˚C
• 30 sec. passed
• &
• OR
• OR
&
• Pc > 2.94 MPa
• Tb > 11˚C
• 12 min. passed
• 6 min. passed
• TsA-Te > 5˚C
• 30 sec. passed
• &
• OR
• OR
&