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10 Error Codes PACi & ECOi
10.1 Alarm codes for indoor/outdoor units PACi R32
Error group
Serial communica-
tion errors Missetting
Serial communica-
tion errors Missetting
PAW-VP•LDHW - Technical Manual – 2020-07
Symptoms
Failure in receiving serial signal from remote
controller's indoor unit
Settings of system address, indoor unit ad-
dress and group control are not made
Setting failure of nonvolatile memory IC
Failure in indoor unit serial signal from
remote controller
Error in indoor unit receiving signal from remote controller (central)
Failure in indoor unit receiving serial signal
from outdoor unit
Failure in outdoor unit
receiving serial signal from
indoor unit
Duplication of indoor unit address
Duplication of main remote
controller setting
Improper setting
Communication error between
main and sub indoor units
Automatic address settings
failure
Outdoor unit Communication error
Outdoor unit Communication error
Indoor & outdoor unit type miss-matched
Duplication of group control's main indoor unit Duplication of main indoor unit address in group control
Group control wiring is connected to indi-
vidual control indoor unit
Indoor unit address is not set
Indoor unit capacity is not set
Duplication of outdoor unit address
Outdoor unit capacity is not set or setting error
Indoor unit type setting error Type of indoor/outdoor units is different
4-way valve locked trouble / operation failure
Error Codes PACi & ECOi
Possible causes / Remedy
Faulty remote controller
Disconnection/Contact failure of remote controller wiring
CHK(check) pins on the indoor unit control PCB are short circuited
In the case of non-group control:
● Power supply OFF of outdoor unit
● Disconnection / Contact failure of inter-unit wiring
In the case of group control:
Automatic address operation was not carried out.
Faulty setting of EEPROM on indoor unit
Faulty remote controller
Wrong wiring of remote controller
Disconnection / Contact failure of inter-unit wiring
● Faulty indoor unit control PCB
● Faulty outdoor unit control PCB
● Communication circuit fuse on indoor unit control PCB opened
● Fuse on outdoor unit control PCB opened Since failure of an out-
door fan motor is considered as a cause, both outdoor unit control
PCB and outdoor unit fan motor are exchanged simultaneously.
● Disconnection / Contact failure of inter-unit wiring
● Disconnection of inter-unit wiring
● Communication circuit fuse on indoor unit control PCB opened
Indoor unit control PCB address setting error
Duplication of indoor unit address setting
Error because of more than one remote controller setting to main
Automatic address setting start is prohibited
Duplication of main unit in group control
● Disconnection of wiring between main unit and additional units
● Contact failure of wiring
● Faulty indoor unit control PCB (Main or Addition)
Automatic Address Alarm
The total capacity of indoor units is too low
Automatic Address Alarm
The total capacity of indoor units is too high
Automatic Address Alarm
No indoor unit connected
Setting error, indoor/outdoor unit type/model miss-matched
Group control wiring is connected to individual control indoor unit
Wired remote
controller display
E01
E02
E03
E04
E06
E08
E09
E12
E14
E18
E15
E16
E20
E24
E29
10
L02
L03
L07
L08
L09
L04
L10
L13
L18
Continued on the next page
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