Daikin REYQ8-48PY1B, Service Manual

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Troubleshooting by Indication on the Remote Controller SiBE37-701_B
279 Troubleshooting
Troubleshooting
∗
1. Pull out and insert the connecter once and check it is absolutely connected.
∗
2. Method to check transmission part of indoor PCB.
Turn off the power and remove the connecter X70A of indoor PCB (A1P).
Short-circuit X70A.
After turning on the power, check below numbers under local setting remote control.
(Confirmation: First code NO. at the condition of second code No. 21 on mode No. 41)
↓
★
After confirmation, turn off the power, take off the short-circuit and connect X70A back to
original condition.
Determination 01: Normal
Other than 01: Transmission defect on indoor PCB
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
YES
Connect the connector accurately.
NO
YES
Replace PCB for fan (A2P).
Connect it and operate (It is
possible to have a cause, such
as instantaneous blackout)
Under above local
installation mode, installation
position is
"
01
"
.
Connect the connecter
X70A and turn on the power
again.
Confirm the condition of
transmission on indoor PCB
using local installation mode.
(*2)
Is the connector between indoor PCB
(A1P) and PCB for fan (A2P) accurately
connected? (*1)
NO
YES
"
C1
"
Malfunction
breaks out again.
Replace indoor PCB (A1P).