U7" Indoor Unit: Malfunction Of Transmission Outdoor Unit - Daikin ERSQ 011AAV1 Service Manual

ESIE09-08
3.58 "U7" Indoor Unit: Malfunction of Transmission Outdoor
Unit
U7
Remote Control
Display
Subcode 2
Applicable
ER*Q 011~016*
Models
Method of Microcomputer checks the transmission of outdoor unit.
Malfunction
Detection
Malfunction
When transmission is not carried out normally for a certain amount of time
Decision
Conditions
Supposed
Causes
Troubleshooting
( ) To select "IND", press the BS2 button (set) till H3P led is on. Then press BS3 button (return) to confirm.
Troubleshooting
Improper connection of transmission wiring between outdoor unit and external control
adaptor for outdoor unit
Improper cool/heat selection
Improper cool/heat unified address (outdoor unit, external control adaptor for outdoor unit)
Defect of outdoor unit PC board (A1P)
Defect of external control adaptor for outdoor unit
Be sure to turn off power switch before connecting or disconnecting connector,
Caution
otherwise parts may be damaged.
C/H
SELECT is set to "IND".
NO
Cool/heat selection is
unified.
YES
C/H SELECT is set to
"MASTER".
NO
C/H SELECT is set to
"SLAVE".
NO
Troubleshooting by Indication on the Remote Controller
YES
NO
YES
YES
Replace the outdoor unit PC
Board (A1P).
Set C/H SELECT to "IND". ( )
Set C/H SELECT to "IND". ( )
Set C/H SELECT to "IND". ( )
Replace the outdoor unit PC
board (A1P).
(V2824)
201