Hitachi PC-ARFG-E Installation & Operation Manual page 115

IN ALARM CONDITION
10 IN ALARM CONDITION
• The RUN indicator flashes.
• The indoor unit number, alarm code, model code, and the connected number of indoor units are displayed on the screen.
• If two or more indoor units are connected, the above functions for each indoor unit are displayed one-by-one.
10.1 POWER FAILURE
• All the indicators are OFF.
• Once the air conditioner is stopped by power failure for longer than 2 seconds, the air conditioner is not started again, although
power recovers. Perform the starting procedures again.
• If the power recovers within 2 seconds, the air conditioner starts again automatically.
10.2 ELECTROMAGNETIC INTERFERENCE (EMI)
• There could be an instance where all the indications are OFF and the unit is stopped.
• This can occur through activation of the microcomputer for the air conditioner protection from the Electromagnetic Interference
(EMI).
• Perform the starting procedures again.
101 PMML0565 rev.1 - 04/2022
Indoor unit number
(Refrigerant system-address number)
Installed unit number
When more than one indoor unit
is connected, press " " or " " to
show other indoor units.