Is PMV under correct conditions?
Is connection of CN600 on P.C.B. WP-041?
Is resistance value of TD sensor correct?
Is there gas leak?
Is there refrigerant shortage?
Repair defective position.
Recharge refrigerant.
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B WP-041.
Defect → Replace.
Repair defective position.
Replace defective part.
Does an abnormal overload happen?
Remove and improve
the cause of overload.
YES
YES
NO
NO
NO
NO
YES
YES
Check
code
[1E]
Outdoor
LED display
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
[Discharge temp. error]
Does an abnormal overload happen?
Is AC mains voltage correct?
(198 to 264V)
Is wire connection correct?
Compressor lead
(Board side, Compressor Side),
Reactor lead, Power supply lead.
Check wiring construction.
Ask repair of power supply.
Check wire connection
and correct it.
Remove and improve
the cause of overload.
Check outdoor P.C.B
MCC-1571 Defect → Replace.
YES
YES
YES
NO
NO
NO
[1F]
[Compressor break down]
{:ON
(
{*:3 sec ON / 0.5 sec OFF)
z:OFF
**z*
**
Is AC mains voltage correct?
(198 to 264V)
Is wire connection correct?
Compressor lead
(Board side, Compressor Side),
Reactor lead, Power supply lead.
Check wiring construction.
Ask repair of power supply.
Check wire connection
and correct it.
Check outdoor P.C.B WP-041.
Defect → Replace.
Is compressor under correct condition?
Check outdoor P.C.B MCC-1571.
Defect → Replace.
Is there refrigerant stagnation?
Compressor lock → Replace.
Does PMV correctly operate?
Check TE, TS sensors and PMV.
Detect → Replace.
NO
NO
YES
YES
NO
YES
YES
NO
NO
YES
[1d]
[Compressor lock]
z
{*
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