Daikin RXYSQ4-5-6PA7V1B Service Manual page 166

SiBE34-802
Troubleshooting
∗
1. Pull out and insert the connecter once and check it is absolutely connected.
∗
2. Method to check transmission part of indoor PC board.
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Is the
connector between
indoor PC board (A1P) and
PC board for fan (A2P) accurately
connected?
(*1)
YES
Confirm the condition of
transmission on indoor PC
board using local installation
mode. (*2)
Under
above local
installation mode, installation
position is
"01".
YES
Connect the connecter X70A
and turn on the power again.
"C1"
Malfunction breaks out
again.
NO
Turn off the power and remove the connecter X70A of indoor PC board (A1P).
Short-circuit X70A.
After turning on the power, check below numbers under local setting remote control.
(Confirmation: Setting position NO. at the condition of setting switch No. 21 on mode No.
41)
Determination 01: Normal
Other than 01: Transmission defect on indoor PC board
★
After confirmation, turn off the power, take off the short-circuit and connect X70A back to
original condition.
Troubleshooting by Indication on the Remote Controller
NO
NO
YES
↓
Connect the connector
accurately.
Replace indoor PC board
(A1P).
Replace PC board for fan
(A2P).
Connect it and operate (It is
possible to have a cause,
such as instantaneous
blackout)
155