Hitachi RWM-2R1E Installation & Operation Manual page 168

TROUBLESHOOTING
Alarm
Category
Code
5C Outdoor fan Abnormality in current detection circuit
EE Compressor Compressor protection
Indoor unit
b0 Incorrect setting of unit model
model setting
b1 Incorrect setting address or refrigerant cycle
Number setting
Incorrect setting of indoor unit number for
b5
H-LINK type

Alarms for LCD
Retry
Alarm YUTAKI
Stop
Code S/SC
Code
202 - (o)
203 - (o)
204 - (o)
158 PMML0575 rev.1 - 09/2021
Type of abnormality
Origin Detail of Abnormality
LCD Wrong settings of PC-ARFH2E
Sub PC-ARFH2E stops answering
LCD
to Main PC-ARFH2E
Indoor unit stops answering to Main
LCD
PC-ARFH2E
Main cause
"Compressor failure. This alarm code appears when the following
alarms 02, 07, 08, 45, 47 occur three times within 6 hours."
No setting of unit capacity or incorrect setting of unit capacity.
Over 64 indoor units setting by number or indoor unit address.
The number of indoor units connected to the H-LINK II of one
system is 17 or higher.
Loose, disconnected, broken or short-circuited
connector
Loose, disconnected, broken or short-circuited
connector
Main Factors