OUT-72
DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting
Multi Liberty
DC Inverter
Codified malfunctions: LED indicators of Multi Liberty HFIU 536 X Indoor Unit
OPERATION
TIMER
PRE-DEF.
Outline of malfunction
• Troubleshooting by LED indicators of Multi Liberty HFIU 536 X Indoor Unit
“TIMER” LED
“PRE-DEF.” LED
“OPERATION” LED
Flashing
Flashing
Flashing
Flashing
Flashing
Flashing
OFF
OFF
Flashing
OFF
OFF
Flashing
Flashing
OFF
OFF
LED Display on Indoor Units
1)
In case of operation malfunctions, the codified flashing of LED indicators on display
allows to explain the cause of malfunction, thus making easier the troubleshooting.
2) As far as the list of malfunctions and the detailed outline of each malfunction are
concerned, see the following Table and the following pages.
Communication error between Indoor Unit ↔ Outdoor Unit.
Operation mode in conflict with operation mode of other Indoor Units.
Malfunction of indoor temp. sensor (broken/in short-circuit) T1 (I.U.)
Faulty EEPROM on Indoor Unit.
Malfunction on Outdoor Unit (see display on Outdoor Unit’s PCB).