Daikin VRV 5 REYA8A7Y1B Installer And User Manual page 166

25 | Troubleshooting
Main Sub code
code
Master Slave 1
,
,
,
Installer and user reference guide
166
Cause
Malfunction code: system test run
not yet executed (system
operation not possible)
An error occurred during the test
run
Test run aborted
Test run aborted due to
communication issues
Commissioning of BS unit safety
system is not completed
Indoor unit communication error
Malfunction code: faulty wiring to
Q1/Q2
Too many indoor units are
connected to F1/F2 line
Warning because there is an error
on another unit (indoor/BS unit)
Connection malfunction over
indoor units or type mismatch
Connection malfunction over
indoor units or type mismatch
Wrong unit combination (multi
system)
Wrong outdoor unit connected
No BS unit connected
Old BS unit connected
BS unit refrigerant type
abnormality
BS unit DIP switch abnormality
Mismatch between wiring path
and piping path during test run
Solution
Execute system test run.
Re-execute the test run.
Re-execute the test run.
Check the communication wires
and re-execute the test run.
Complete commisioning of BS unit
safety system. Refer to BS unit
manual for more information.
Check user interface connection.
Check Q1/Q2wiring.
Check indoor unit amount and
total capacity connected.
Check if other indoor units/BS
units have malfunction and
confirm indoor unit mix is allowed.
Check if other indoor units have
malfunction and confirm indoor
unit mix is allowed.
Check if other indoor units have
malfunction and confirm indoor
unit mix is allowed.
Check if unit types are compatible.
Disconnect the outdoor unit.
Connect a BS unit.
Disconnect the BS unit.
Check BS unit refrigerant type
Check the DIP switches of the BS
unit.
Mistake detected during BS unit
and indoor unit connection check
(see "22.8 To perform a BS/indoor
unit connection check" [
Confirm wiring between indoors
and BS units.
Refer to BS unit manual for
correct way of wiring.
(a)
SVEO SVS
4
153]).
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
(b)