Toshiba MMK-AP0074MH-E Service Manual page 49

Check code display
Outdoor 7-segment
TCC-LINK central &
remote controllers
Auxiliary code
01: Compressor 1 side
P07 02: Compressor 2 side
03: Compressor 3 side
P09 Detection of heat unit number
P10 Detection of indoor unit number
P13 —
01: TS condition
P15
02: TD condition
P17 —
P18 —
P19 Detection of outdoor unit number
P20 —
P24 Detection of heat unit number
Sensor lamp display
Block display
Operation Timer Ready Flash
¥ l ¥
P07 A Heat sink overheat error
l
¥ ¥
(P09) A
Heat unit water-shortage error
l
¥ ¥
(P10) A There is indoor unit which overflow was detected.
l ¥ ¥
P13 A Outdoor liquid back detection error
l
¥ ¥
P15 A
Gas leak detection
¥ l ¥
P17 A Outdoor discharge (TD2) temp. error
¥ l ¥
P18 A Outdoor discharge (TD3) temp. error
¥ l ¥
P19 A 4-way valve invert error
¥ l ¥
P20 A High pressure protection operation
l
¥ ¥
P24 A Heat unit error (Main code)
(∗) ¡: Goes on, ¥: Flashes, l: Goes off
A (Alternate) : Flashing condition is alternate when there are two flashing LED.
S (Simultaneously) : Two LED flash simultaneously when there are two flashing LED.
Main defective position
High temp. error was detected in outdoor IGBT built-in temp. sensor (TH).
There is heat unit which was been detected water-shortage in 1 system.
(← Heat unit detected.)
There is abnormally stopped indoor unit which was been detected water-overflow
in 1 system. (← Indoor unit detected.)
Liquid back operation was judged from refrigerant cycle status.
Outdoor suction temp. sensor (TS1) continuously and repeatedly detected high
temperature over standard value.
High temp. error was detected in outdoor discharge temp. sensor (TD2).
High temp. error was detected in outdoor discharge temp. sensor (TD3).
Refrigerant cycle error was detected in heating operation.
High pressure (Pd) sensor detected pressure over standard value.
Heat unit detected error (Heat remote controller displays detailed check code
together with model number.)
Description