Daikin VRV RXYQ72AATJ Series Installation Manual page 50

Error code
Main Sub code
code Master/sub 1
01
U4
09
10
11
12
13
14
03
01
U7
02
11
01
U9
03
UA
18
20
27
31
49
01
UH
01
UF
05
47
Contents
Faulty wiring to Q1/Q2 or indoor- outdoor.
Malfunction of connected indoor unit.
Faulty wiring to Q1/Q2 or indoor- outdoor.
• Too many indoor units are connected to F1/F2 line.
• Faulty wiring between units.
• System mismatch. Wrong type of indoor units com-
bined (R407C, Mini-split, etc).
• Indoor unit malfunction.
Connection malfunction over indoor units or type
mismatch (R407C, Mini-split, etc).
Wrong combination (different series (e.g. RXYQ and
REYQ), or different type (e.g. A type and X type)).
Assembly defect of indoor and outdoor units (e.g.
different models, number of units or part numbers, or
different series are mixed).
Wrong combination of outdoor units.
Auto address malfunction (inconsistency)
• Auto address malfunction (inconsistency)
• Wrong wiring detection
Stop valves closed.
Solution
Connect transmission wiring of indoor units to "TO
IN/D UNIT (F1, F2)" and transmission wiring of other
outdoor units to "TO OUT/D UNIT (F1, F2)".
Check the error code of indoor unit and resolve it.
Connect transmission wiring of indoor units to "TO
IN/D UNIT (F1, F2)" and transmission wiring of other
outdoor units to "TO OUT/D UNIT (F1, F2)".
• Check indoor unit amount and total capacity con-
nected.
• Check connection.
Check if other indoor units have malfunction and con-
firm indoor unit mix is allowed.
Check if other indoor units have malfunction and con-
firm indoor unit mix is allowed.
Correct the units combination.
• Check and modify the number of indoor units that
are connected.
• Check the type of refrigerant for indoor and outdoor
units, and replace them with adaptable indoor/out-
door units in the case of inconsistency.
Correct the units combination.
Check if transmission wired unit amount matches with
powered unit amount (by monitor mode) or wait till
initialization is finished.
Check if transmission wired unit amount matches with
powered unit amount (by monitor mode) or wait till
initialization is finished.
Open stop valves.
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