Daikin RXYQ168TYDN - Page 43

403P362438-1B English
Malfunction code
Contents Solution
Main
code
Sub code
Master/sub 1/sub 2
J3
16/22/28 Discharge temperature sensor malfunction (R21T):
open circuit – A1P (X29A)
Check connection on printed circuit board or actuator.
17/23/29 Discharge temperature sensor malfunction (R21T):
short circuit – A1P (X29A)
Check connection on printed circuit board or actuator.
18/24/30 Discharge temperature sensor malfunction (R22T):
open circuit – A1P (X29A)
Check connection on printed circuit board or actuator.
19/25/31 Discharge temperature sensor malfunction (R22T):
short circuit – A1P (X29A)
Check connection on printed circuit board or actuator.
47/49/51 Compressor casing temperature sensor malfunction
(R8T): open circuit – A1P (X29A)
Check connection on printed circuit board or actuator.
48/50/52 Compressor casing temperature sensor malfunction
(R8T): short circuit – A1P (X29A)
Check connection on printed circuit board or actuator.
J5
01/03/05 Suction temperature sensor malfunction (R3T) – A1P
(X30A)
Check connection on printed circuit board or actuator.
J6
01/02/03 De-icing temperature sensor malfunction (R7T) – A1P
(X30A)
Check connection on printed circuit board or actuator.
J7
06/07/08 Liquid temperature sensor (after subcool HE) malfunc-
tion (R5T) – A1P (X30A)
Check connection on printed circuit board or actuator.
J8
01/02/03 Liquid temperature sensor (coil) malfunction (R4T) –
A1P (X30A)
Check connection on printed circuit board or actuator.
J9
01/02/03 Gas temperature sensor (after subcool HE) malfunc-
tion (R6T) – A1P (X30A)
Check connection on printed circuit board or actuator.
JA
06/08/10 High pressure sensor malfunction (S1NPH): open
circuit – A1P (X32A)
Check connection on printed circuit board or actuator.
07/09/11 High pressure sensor malfunction (S1NPH): short
circuit – A1P (X32A)
Check connection on printed circuit board or actuator.
JC
06/08/10 Low pressure sensor malfunction (S1NPL): open
circuit – A1P (X31A)
Check connection on printed circuit board or actuator.
07/09/11 Low pressure sensor malfunction (S1NPL): short
circuit – A1P (X31A)
Check connection on printed circuit board or actuator.
LC
14/15/16 Transmission outdoor unit
- inverter: A3P transmission trouble – A1P (X20A,
X28A)
• Check connection.
• Correct phase order.
19/20/21 Transmission outdoor unit
- inverter: A4P transmission trouble – inverter: A3P
(X41A): RXYQ72
- inverter: A5P transmission trouble – inverter: A3P
(X41A): RXYQ96/120
- inverter: A7P transmission trouble – inverter: A6P
(X41A): RXYQ144/168
• Check connection.
24/25/26 Transmission outdoor unit
- inverter: A4P transmission trouble – inverter: A5P
(X4A): RXYQ96/120
- inverter: A4P transmission trouble – inverter: A7P
(X4A): RXYQ144/168
• Check connection.
30/31/32 Transmission outdoor unit
- inverter: A6P transmission trouble – inverter: A3P
(X41A, X61A): RXYQ144/168
• Check connection.
• Correct phase order.
P1
01/02/03 INV1 unbalanced power supply voltage Check if power supply is within range.
07/08/09 INV2 unbalanced power supply voltage Check if power supply is within range.
U1
01/05/07 • Reversed power supply phase
• A9P: PRINTED CIRCUIT BOARD (OPEN
PHASE PROTECTION) malfunction–A1P(X36A):
RXYQ96/120TYDN
• Correct phase order.
• Check connection.
• Check fuse.
04/06/08 Reversed power supply phase Correct phase order.