Daikin VRV Inverter K Series - Outdoor Unit Operation Flowchart

Operation Flowcharts SiE-05C
124 Troubleshooting Inverter K Series
1.2 Outdoor Unit Operation Flowchart
∗16
∗17
YES
NO
Fan
Temperature
control
YES
YES
NO
YES
NO
NO
HeatingCooling
B
Start
Cooling operation Heating operation
Power on
Initialize electronic expansion
valve (Y1E)
Outdoor unit malfunction display
lamp : ON
Push reset ON/OFF switch.
Outdoor unit malfunction display
lamp : OFF
Fan or temperature control?
Restart
prevention in progress
(5 minutes) ?
Actuation
of safety device?
Is
outdoor unit malfunction
display lamp on?
Cooling or heating?
Has indoor
unit thermostat on
operation signal been output
to more than
1 unit?
Inverter compressor magnetic contactor K1M : OFF
Output frequency to inverter INV : 0 Hz
Standard compressor magnetic contactor K2M : Closed
Electronic expansion valve Y1E : OFF
Solenoid valve (hot gas) Y2S : OFF
Solenoid valve (injection) Y3S Y4S : OFF
Solenoid valve (pressure equalizing bypass)
: ON or OFF
4-way valve Y1R : On during heating operation , off
during cooling or fan operation.
(VF026)
∗16 If the outdoor unit malfunction display lamp is on then this either indicates that the outdoor unit
operation has been terminated abnormally or warns that there is refrigerant shortage or else that
there is a piping or wiring fault (operations will continue). (Refer to Indoor Unit Control ∗1)
∗17 Keep on operations for 15 minutes after the inverter compressor has stopped.
Note: The crank case heaters are on when the magnetic relays of their respective
compressors are off.
CH
SI-05C.BOOK Page 124 Monday, November 6, 2000 4:13 PM
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