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Daikin VRV III-S RXYMQ36 48PVJU Service Manual Page 194

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SiUS34-907
U8
3.41 "
" Malfunction of Transmission between Main and Sub
Remote Controllers
U8
Remote
Controller
Display
Applicable
All indoor unit models
Models
Method of
If controlling with 2remote controllers, check the system using a micro-computer to ensure that the
signal transmission between the indoor unit and the remote controllers (main and sub) is normal.
Malfunction
Detection
Malfunction
Normal transmission does not continue for specified period.
Decision
Conditions
 Malfunction of transmission between main and sub remote controller
Supposed
 Connection between sub remote controllers
Causes
 Defect of remote controller PCB
Troubleshooting
Caution Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Using 2 remote
controllers control.
YES
SS1
of both remote controllers is
set to "SUB."
YES
Troubleshooting
SS1
NO
of remote controller PCB
is set to "MAIN."
YES
NO
Troubleshooting by Indication on the Remote Controller
NO
Set SS1 to "MAIN"; the power
supply off once and then back
on.
Turn the power off and then
back on. If a malfunction occurs,
replace the remote controller
PCB.
Set one remote controller to
"MAIN"; the power supply off
once and then back on.
185

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