191
Check code name
[P05] / [AF]
(d07 / AI-NET)
Check code name
Open phase, negative phase
Cause of operation
1. Power supply open phase
2. Power supply negative phase
• Check the phase power line of outdoor unit.
• Check error of outdoor I/F P.C. board.
• Check there is no looseness, etc of terminal.
Check code name
[P07] / [1C]
(d07 / AI-NET)
Check code name
Heat sink overheat error
Cause of operation
1. Power voltage error
2. Outdoor fan system error
3. Heat sink installation error
4. Clogging of hear sink cooling duct
5. IPDU P.C. board error (TH sensor error)
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
Correct wiring such as
cable to compressor or
connector connection.
Is power voltage normal?*
Is indoor fan normal?
Check IPDU P.C. board.
Is wiring of IPDU normal?
Is screw between IPDU
and heat sink loosened?
Is there no clogging of
heat sink cooling duct?
Correct power line.
Check fan and fan motor.
Tighten screws.
Correct clogging.
* 380–415V ± 10%
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
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