Daikin FTXS09HVJU - Four Way Valve Performance Check

Check SiUS04-904
Service Diagnosis 145
5.1.3 Four Way Valve Performance Check
Check No.05  09/12 Class
 15/18/24 Class
(R8312)
NO
YES
YES
NO
(Fig. 1)
Voltage at S80
DC220-240V
ON
Compressor
Time
Turn off the power and turn it on
again.
Disconnect the four-way valve coil
from the connector and check the
continuity.
Start the heating-mode run.
* Four way-valve coil
Cooling / dry : No continuity
Heating : Continuity
Replace the outdoor unit
PCB.
Replace the four-way valve
coil.
Replace the four-way valve.
Four-way valve
coil resistance at
3κΩ±0.5κΩ?
S80 voltage at
DC 220-240 V with
compressor on? (Fig.
1)
(R0286)
NO
YES
YES
NO
(Fig. 1)
Voltage at S80
DC220-240V
ON
Compressor
Time
Turn off the power and turn it on
again.
Disconnect the four-way valve coil
from the connector and check the
continuity.
Start the heating-mode run.
* Four-way valve coil
Cooling / dry : No continuity
Heating : Continuity
Replace the outdoor unit
PCB.
Replace the four-way valve
coil.
Replace the four-way valve.
Four-way valve
coil resistance at 1500 Ω?
S80 voltage at
DC 220-240 V with
compressor on? (Fig.
1)