OUT-55
DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting
Multi Liberty
DC Inverter
Outline of malfunction
Malfunction on drain condensate system [HTFU X I.U. only]
OPERATION
TIMER
DEF./FAN.
OFF
OFF
OFF
ALARM
Flashing
• Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units
OK
OK
OK
Error
OK
Malfunction of control chip on Indoor Unit’s main PCB.
Check if chip is well inserted in the base, and in the
correct position basing on the mark on the PCB.
Re-install the chip, or try to replace it by
taking another one from a same model of
PCB, in order to verify if the chip itself is not
faulty.
Main PCB faulty (for
exemple, water
infitrations, etc.)
Replace the PCB.
YES
YES
“ALARM” indicator on Indoor Unit
flashes quickly.
Does any cause provoke malfunction of
float switch operation?
Solve the problem, or replace
the float switch.
Defective connection of float switch on
Indoor Unit’s PCB. Is connection loosen or
broken?
Correct and restore defective
connections of float switch.