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42
3P362438-5N English
Malfunction code
Contents
Solution
Main
code
Sub code
Master/sub 1/sub 2
JC
06/08/10
Low pressure sensor malfunction: open circuit
(S1NPL)-A1P (X31A)
Check connection on printed circuit board or actuator.
07/09/11
Low pressure sensor malfunction: short circuit
(S1NPL)-A1P (X31A)
Check connection on printed circuit board or actuator.
LC
14/15/16
Transmission trouble.
A3P (X6A)-A1P (X20A)
Check connection.
19/20/21
Transmission trouble.
A4P (X3A)-A3P (X41A) : REYQ72
A7P (X3A)-A6P (X41A) : REYQ96-168
Check connection.
24/25/26
Transmission trouble.
A4P (X3A)-A7P (X4A) : REYQ96-168
Check connection.
30/31/32
Transmission trouble.
A6P (X6A)-A3P (X41A, X61A) : REYQ96-168
Check connection.
33/34/35
Transmission trouble.
A8P (X2A)-A1P (X20A)
Check connection.
P1
01/02/03
Unbalanced power supply voltage.
Check if power supply is within the range.
07/08/09
U1
01/05/07
•
Reversed power supply phase.
•
Printed circuit board malfunction.
A12P-A1P (X36A) : REYQ72/144/168TAYD
*
•
Correct phase order.
•
Check connection.
•
Check fuse.
04/06/08
Reversed power supply phase.
Correct phase order.
U2
01/08/11
Voltage power shortage or open power supply phase.
•
Check if power supply is within the range.
•
Correct phase order.
22/25/28
02/09/12
Reversed or open power supply phase.
•
Check if power supply is within the range.
•
Correct phase order.
23/26/29
U3
03
System test run not yet executed (system operation
not possible).
Execute system test run.
04
An error occurred during the test run.
Check the piping and re-execute the test run.
05
Test run aborted.
Re-execute the test run.
06
07
Test run aborted due to communication issues.
Check the communication wires and re-execute the
test run.
08
U4
01
Faulty wiring to Q1/Q2 or indoor- outdoor.
Connect transmission wiring of Branch Selector units
and indoor units to “TO IN/D UNIT (F1, F2)” and trans
-
mission wiring of other outdoor units to “TO OUT/D
UNIT (F1, F2)”.
03
Malfunction of connected indoor unit.
Check the malfunction code of indoor unit and resolve it.
U7
01
Faulty wiring to Q1/Q2 or indoor- outdoor.
Connect transmission wiring of Branch Selector units
and indoor units to “TO IN/D UNIT (F1, F2)” and trans
-
mission wiring of other outdoor units to “TO OUT/D
UNIT (F1, F2)”.
02
11
•
Too many indoor units are connected to F1/F2 line.
•
Faulty wiring between units.
•
Check indoor unit amount and total capacity con-
nected.
•
Check connection.
U9
01
•
System mismatch. Wrong type of indoor units com-
bined (R407C, Mini-split, etc).
•
Indoor unit malfunction.
Check if other indoor units have malfunction and con-
firm indoor unit mix is allowed.
01_EN_3P362438-5N.indb 42
12/11/2019 11:24:26 AM