Toshiba SUPER MMK-AP0073H (IN) Service Manual page 115

Check code
[P05] / [AF]
(Current code / AI-NET)
• 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
[P07] / [1C]
(Current code / AI-NET)
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
Is power voltage normal?*
YES
Is wiring of IPDU normal?
YES
Is indoor fan normal?
YES
Is screw between IPDU
and heat sink loosened?
NO
Is there no clogging of
heat sink cooling duct?
NO
Check IPDU P.C. board.
Check code name
Open phase, negative phase
Check code name
Heat sink overheat error
NO
* 380–415V ± 10%
NO
NO
YES
YES
115
Cause of operation
1. Power supply open phase
2. Power supply negative phase
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)
Correct power line.
Correct wiring such as
cable to compressor or
connector connection.
Check fan and fan motor.
Tighten screws.
Correct clogging.