Hitachi UTOPIA R32 Series User Manual

63
PMEN0654 rev.0 - 12/2023
14
MAIN ALARM CODES
TROUBLESHOOTING
Code Category Content of Abnormality Leading Cause
b0
Indoor Unit
Incorrect seng of unit model
code
Incorrect seng of indoor unit model
b1
Incorrect seng of unit and
refrigerant cycle number
64 or more number is set for address or refrigerant cycle
b2 Abnormality of EEPROM EEPROM failure, incorrect data of EEPROM
b5
Incorrect indoor unit number
seng
There are 17 or more non-corresponding to H-LINK II
units are connected to one system.
b6
Abnormal communicaon
between indoor PCB and indoor
fan controller
Communicaon failure, disconnected communicaon
cable, abnormal connecon
C1
CH-Box
(Change-Over
Box)
Incorrect CH-Box connecon
2 or more CH-Box are connected between outdoor unit
and indoor unit
C2
Incorrect indoor unit connecon
number
9 or more indoor units connected to single branch type
CH-Box
7 or more indoor units connected per a branch of
mulple branch type CH-Box
C3
Incorrect indoor unit refrigerant
number seng
Indoor units of dierent refrigerant cycle number are
connected to CH-Box
C4
Incompable outdoor unit
connecon (CH-Box)
This outdoor unit is not compable with this CH-Box.
C5 Incorrect connecon port seng
Indoor unit is connected to a port that is set to not used
for mulple branch type CH-Box
EE Compressor
Compressor protecon alarm
(It can not be reset from wired
controller)
This alarm code appears when the following alarms*
occurs three mes within 6 hours
*02, 07, 08, 39, 43 to 45, 47

Hitachi UTOPIA R32 Series Specifications

General

Brand	Hitachi
Model	UTOPIA R32 Series
Category	Air Conditioner
Language	English