Daikin LRYEQ16AY1 Service Manual page 83

SiBE811001EB
(2)-2 Operation clearance ON/OFF to Booster unit
Operation clearance is transmitted to booster unit to use booster unit thermostat being ON/OFF.
Operation clearance
OFF to Booster unit
(3) Redundant refrigerant recovery/refrigeration oil recover control
Periodically recovers refrigerant in the system or refrigerator oil.
(3)-1 Redundant refrigerant recovery-1: Conducts recovery of remaining refrigerant in the AC indoor unit and
inhalation piping on the AC side. (Operation mode: 29, 30, 35)
Operation mode: 29,
30, 35 (STD2
compressor: OFF)
(3)-2 Redundant Refrigerant Recovery-2: Recovers refrigerant remaining in the outdoor unit heat exchanger under
condition of 100 % Heat Recovery (when AC indoor heating thermostat is ON) (Operation mode: 64, 65, 70)
Operation mode: 64,
65, 70 (STD2
compressor: OFF)
CONVENI-PACK
• Operation SW: ON
• Operation mode: 0, 5, 6, 7, 40, 41, 42
• LP1 < 1.666MPa
&
• Guard timer of INV. compressor terminates or guard timer of STD1 compressor terminates.
&
OR
• Freezing standby period is more than 0 - 10 minutes.
• Operation mode: except 0, 5, 6, 7, 40, 41, 42
&
• LP1 < 1.666MPa
• Operation SW: OFF
• LP1 ≥ 1.764MPa
OR
• Error of INV. compressor and error of STD1 compressor
• HPS for refrigeration activates
• Operation mode: 0, 5, 6, 7, 40, 41, 42 continues for 5 minutes or more.
• Standby time period of STD2 compressor terminates.
• Air-conditioner stopping time exceeds 180 minutes. (At HP - LP2 < 0.294MPa: 60 minutes)
OR • Within 7 minutes of the power ON.
• Within 7 minutes after a four way valve A is switched over.
&
• LP2 > MP - 0.098MPa
& OR
• LP2 > 0.98MPa continues for consecutive 5 minutes or more.
OR
• HP < 2.842MPa
• HP - LP2 < 0.294MPa continues for consecutive 5 minutes or more.
• LP2 < 0.147MPa
• HP > 3.136MPa
OR • Td3 > 100˚C
• Redundant refrigerant recovery 1 has passed 2 minutes or more.
• INV. Compressor stops or STD1 compressor stops
• Standby time period of STD2 compressor terminates.
• Compressor in operation
& • More than 20 minutes have passed after STD2 stops.
• LP2 > f(Ta) – 0.0098MPa continues for consecutive 5 minutes or more.
• HP < Hpn MPa
• LP2 < 0.147MPa
• HP > Hpn MPa
OR • Td3 > 100˚C
• Redundant refrigerant recovery 2 has passed 2 minutes or more.
• INV. Compressor stops or STD1 compressor stops
Hpn depends on the service mode 3-12.
Initial setting: 2.9 MPa
Outline of Functions (Outdoor unit)
Operation clearance
ON to Booster unit
Redundant refrigerant
recovery 1 (STD2
compressor: ON)
Redundant refrigerant
recovery 2 (STD2
compressor: ON)
f(Ta): Pressure calculated from
outdoor air temperature
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