– 53 –
Check
code

[F31]

Outdoor
LED display
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)

[EEPROM error]

[H01] [Compressor break down]

[H02] [Compressor lock]

z
z
z
{
z
z
{
z
z
z
{
Check outdoor P.C. board.
Defect → Replace
Correct and clear the cause.
Check wire connection
and correct it.
Correct power supply line.
Check outdoor P.C. board.
Defect → Replace
Is it not abnormal overload?
Is power supply voltage normal?
AC198 to 264V
Is wire connection normal?
Compressor lead
(P.C. board side, Compressor side),
Reactor lead, Power supply lead
YES
YES
YES
NO
NO
NO
Check wire connection
and correct it.
Correct power supply line.
Is compressor normal?
Is there no refrigerant stagnation?
Does PMV normally operate?
Is power supply voltage normal?
AC198 to 264V
Is wire connection normal?
Compressor lead
(P.C. board side, Compressor side),
Reactor lead, Power supply lead
Compressor lock → Replace
Check outdoor P.C. board.
Defect → Replace
Check TE, TS sensors and PMV.
Defect → Replace
Check outdoor P.C. board.
Defect → Replace
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO