Daikin REYQ72TTJU Installation Manual page 45

Malfunction code
Main Sub code
code Master/sub 1/sub 2
06/08/10
JC
07/09/11
14/15/16
LC
19/20/21
24/25/26
30/31/32
33/34/35
01/02/03
P1
07/08/09
01/05/07
U1
04/06/08
01/08/11
U2
02/09/12
22/25/28
23/26/29
03
U3
04
05
06
07
08
01
U4
03
01
U7
02
11
01
U9
3P362438-3H English
Contents
Low pressure sensor malfunction (S1NPL): open
circuit – A1P (X31A)
Low pressure sensor malfunction (S1NPL): short
circuit – A1P (X31A)
Transmission outdoor unit
- inverter: A3P transmission trouble – A1P (X20A,
X28A)
Transmission outdoor unit
- inverter: A4P transmission trouble – inverter: A3P
(X41A): REYQ72
- inverter: A7P transmission trouble – inverter: A6P
(X41A): REYQ96-168
Transmission outdoor unit
- inverter: A4P transmission trouble – inverter: A7P
(X4A): REYQ96-168
Transmission outdoor unit
- inverter: A6P transmission trouble – inverter: A3P
(X41A, X61A): REYQ96-168
Transmission outdoor unit
- main printed circuit board: A1P transmission
trouble – sub printed circuit board: A8P (X2A)
INV1 unbalanced power supply voltage
INV2 unbalanced power supply voltage
• Reversed power supply phase malfunction
• A12P: PRINTED CIRCUIT BOARD (OPEN
PHASE PROTECTION) malfunction–A1P(X36A):
REYQ72/144/168TYDN
Reversed power supply phase malfunction
INV1 voltage power shortage or open phase
INV1 reversed or open power supply phase
INV2 voltage power shortage or open phase
INV2 reversed or open power supply phase
• Malfunction code: System test run not yet executed
(system operation not possible).
• Reversed or open power supply phase
• Faulty wiring to Q1/Q2 or indoor – outdoor
Faulty wiring to Q1/Q2 or indoor – outdoor
Malfunction of connected indoor unit.
Faulty wiring to Q1/Q2 or indoor – outdoor
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.
Solution
Check connection on printed circuit board or actuator.
Check connection on printed circuit board or actuator.
• Check connection.
• Correct phase order.
• Check connection.
• Check connection.
• Check connection.
• Correct phase order.
• Check connection.
Check if power supply is within range.
Check if power supply is within range.
• Correct phase order.
• Check connection.
• Check fuse.
Correct phase order.
• Check if power supply is within range.
• Correct phase order.
• Check if power supply is within range.
• Correct phase order.
• Check if power supply is within range.
• Correct phase order.
• Check if power supply is within range.
• Correct phase order.
• Execute system test run.
• Correct phase order.
• Check (Q1/Q2) wiring.
Connect transmission wiring of BS unit and indoor unit
to "TO IN/D UNIT (F1, F2)" and transmission wiring of
other outdoor unit to "TO OUT/D UNIT (F1, F2)".
Check the malfunction code of indoor unit and resolve it.
Connect transmission wiring of BS unit and indoor unit
to "TO IN/D UNIT (F1, F2)" and transmission wiring of
other outdoor unit to "TO OUT/D UNIT (F1, F2)".
Connect transmission wiring of BS unit and indoor unit
to "TO IN/D UNIT (F1, F2)" and transmission wiring of
other outdoor unit 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.
42