– 56 –
Check
code

[P04]

Outdoor

LED display

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

[Power supply error (Vdc)] → Refer to [P05] column.

[High pressure protective operation] → Refer to [P20] column.

z
z
{
z
z
{

[P05] [Power supply error (Voltage error)]

z
z
{

[P07] [Heat sink overheat error]

z
z
{

[P15] [Gas leak detection]

z
{
Confirm electric construction, etc.
Check outdoor P.C. board.
Defect → Replace
YES
NO
Is there no down or up
of power supply voltage?
(AC198 to 264V)
Check outdoor P.C. board.
Defect → Replace
Remove blocking matter.
Correct short-circuit.
YES
YES
NO
NO
Apply radiation grease
to objective part.
Retightening of screws.
Is not the ventilation flue
of the heat sink blocked?
Is not the fan blocked?
(Short-circuit, etc.)
Is there no loosening of
screws of motor drive element of
outdoor P.C. board IC200?
Did not forget to apply radiation grease
to rear side of IC200?
Open valve fully.
Correct and replace piping.
Correct connector.
Sensor error → Replace
Check outdoor P.C. board.
Defect → Replace
Correct defective position.
Replace defective part.
Repair defective position.
Recharge refrigerant.
Error
OK
YES
YES
YES YES
NO
NO
NO
NO
Is there no crushed pipe?
Is valve fully opened?
Is PMV normal?
Check temp. sensor.
TD sensor CN601, TS sensor CN604
Is there no gas leak?
Is refrigerant charge amount adequate?