Troubleshooting by Error Code
SiUS341615E
255
Service Diagnosis
Troubleshooting
Note:
∗
1. Make measurement of voltage at the power supply terminal block (X1M).
∗
2. Make measurement of voltage at the L1, L2 and L3 terminals of diode module located on the
inverter PCB during the compressor is in operation.
Is supply
voltage imbalance
over approximately
12 V? (
∗
1)
Correct the open phase of
power supply.
Open phase?
Is the
imbalance of voltage
applied to the inverter over
approximately
12 V? (
∗
2)
Rectify the power supply
voltage imbalance.
Take countermeasures (listed
below).
YES
YES
NO
NO
NO
Take countermeasures.
Defective noise filter, relay K1M
or K2M inverter PCB / Defective
wiring
Turn OFF the power supply,
and then check and repair
wirings in the main circuit and
defective components.
(1) Loose contact and wiring
disconnection between the
power supply and the
inverter
(2) Adhesion/meltdown of
contact of, or loose contact
of K1M
(3) Wiring disconnection in or
loose contact of noise filter
Replace the inverter PCB.
RXYQ72-120TA: A3P
RXYQ144/168TA: A3P, A6P
YES
Explanation to users
∗
Use the document “Notice of Inspection Results” attached to spare part.
Hand the “Notice of Inspection Results” to user to ask
him/her to rectify the imbalance.
Be sure to explain user that “power supply
voltage imbalance” will occur and Daikin
accepts no responsibility for the imbalance.
Use equipment capable of constantly
recording power supply voltages (e.g.
Memory Hicoder) to record power
supply voltages between phases (R-S,
S-T, and R-T) for a period of
consecutive 1 week.
Power supply voltage imbalance Even
though power supply voltage remains
balanced when making measurement,
it often becomes imbalanced during
night-time (from 18:00 to 22:00).
Even though the power
supply voltage is normal, the
error recurs.
<If voltage can be monitored>
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check in Monitor Mode
12/14 ton classes are equipped
with 2 compressors.
Check for the compressor 1 or 2
applicable to the error code
P1
while in monitor mode of the
outdoor unit PCB.
Summary of Contents for RXYQ-TA Series
Page 1: ...Service Manual SiUS341615E RXYQ72 408TAYDU RXYQ72 408TATJU Heat Pump 60 Hz...
Page 321: ...SiUS341615E Wiring Diagrams Appendix 308 RXYQ96 120TAYDU 2D106439A...
Page 322: ...Wiring Diagrams SiUS341615E 309 Appendix RXYQ144 168TAYDU 2D106440A...
Page 323: ...SiUS341615E Wiring Diagrams Appendix 310 RXYQ72TATJU 3D106435A...
Page 324: ...Wiring Diagrams SiUS341615E 311 Appendix RXYQ96 120TATJU 2D106436A...
Page 325: ...SiUS341615E Wiring Diagrams Appendix 312 RXYQ144 168TATJU 2D106437A...
Page 335: ...SiUS341615E Wiring Diagrams Appendix 322 VAM1200GVJU 3D073270C...
Page 336: ...Revision History Month Year Version Revised contents 02 2017 SiUS341615E First edition...
