Daikin VRV S RXQ4/5ARV1 Service Manual page 222

Troubleshooting by Error Code
Troubleshooting
Note(s)
1. Pull out and insert the connector once and check if it is absolutely connected.
2. Method to check transmission part of indoor unit control PCB.
(1) Turn OFF the power and remove the connector X70A of indoor unit control PCB (A1P).
(2) Short circuit X70A.
(3) After turning ON the power, check below numbers under field setting from remote controller.
(Confirmation: Second code No. at the condition of first code No. 21 on mode No. 41)
Determination
 After confirmation, turn OFF the power, take off the short circuit and connect X70A back to
original condition.
216
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the
connector between
indoor unit PCB (A1P) and fan
PCB (A2P) accurately
connected? (∗1)
YES
Confirm the condition of
transmission on indoor unit
PCB using field setting mode.
(∗2)
Under above
field setting mode,
second code No. is 01.
YES
Connect the connector X70A
and turn ON the power again.
C1
Reoccurrence
of error.
NO
01: Normal
Other than 01: Transmission error on indoor unit control PCB
NO
NO
YES
SiAF332111E
Connect the connector accurately.
Replace the indoor unit control
PCB (A1P).
Replace the fan PCB (A2P).
Continue the operation (It is
possible to have a cause, such
as instantaneous power failure).
Part 6 Service Diagnosis