Toshiba MMK-AP0074MH-E Service Manual page 48

Check code display
Outdoor 7-segment
Auxiliary code
H05 —
H15 —
H25 —
H06 —
H07 —
01: TK1 sensor error
02: TK2 sensor error
H08 03: TK3 sensor error
04: TK4 sensor error
05: TK5 sensor error
01: TK1 Oil circuit system error
02: TK2 Oil circuit system error
H16 03: TK3 Oil circuit system error
04: TK4 Oil circuit system error
05: TK5 Oil circuit system error
L04 —
No. of preceded indoor units
L06
([L05/L06] by individual display)
L08 —
L10 —
L17 —
L18 —
L26 No. of connected heat units
L27 No. of connected heat units
L28 —
A3-IPDU A3-IPDU
FAN FAN
IPDU IPDU
1 2 3 1 2 3
01 ¡ 0A ¡ ¡
¡ ¡ ¡ ¡
02 0B
¡ ¡ ¡ ¡
03 0C
L29 04 ¡ 0D ¡ ¡ ¡
¡ ¡ ¡ ¡ ¡
05 0E
¡ ¡ ¡ ¡ ¡ ¡
06 0F
07 ¡ ¡ ¡
¡ ¡
08 mark:
Error position.
¡ ¡
09
L30 Detection of indoor unit number
P03 —
00: Open phase shortage detection
01: Compressor 1 side
P05
02: Compressor 2 side
03: Compressor 3 side
Sensor lamp display
Block display
TCC-LINK central &
remote controllers
Operation Timer Ready Flash
l ¥ l
H05
l l
¥
H15
l l
¥
H25
l ¥ l
H06
l ¥ l
H07
l ¥ l
H08
l ¥ l
H16
¥ ¡ ¥
L04 S
¥ l ¥
L05 S
l
¥ ¥
L06 S
l
¥ ¥
L08 S
¥ ¡ ¥
L10 S
¥ ¡ ¥
L17 S
¥ ¡ ¥
L18 S
¥ ¡ ¥
L26 S
¥ ¡ ¥
L27 S
¥ ¡ ¥
L28 S
¥ ¡ ¥
L29 S
¥ ¡ ¥
(L30) S
¥ l ¥
P03 A
l
P05 ¥ ¥ A
(∗) ¡: 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
Outdoor discharge temp. sensor (TD1) Miswiring or mismounting of outdoor discharge temp. sensor (TD1) or coming-out
miswiring of TD1 sensor was detected.
Outdoor discharge temp. sensor (TD2) Miswiring or mismounting of outdoor discharge temp. sensor (TD2) or coming-out
miswiring of TD2 sensor was detected.
Outdoor discharge temp. sensor (TD3) Miswiring or mismounting of outdoor discharge temp. sensor (TD3) or coming-out
miswiring of TD3 sensor was detected.
Low pressure protective operation Protection by low pressure (Ps) sensor was detected.
Protection for oil level drop Protection detection by temp. sensor (TK1 to 5) for oil level detection.
Oil level detection temp. sensor
Open/Short of temp. sensor (TK1 to 5) for oil level detection was detected.
(TK1 to 5) error
After starting compressor operation, temperature change of temp. sensor
Detection circuit error
(TK1 to 5) for oil level detection was not detected.
Duplicated setting of system address to outdoor units of different refrigerant
Duplicated outdoor system address
piping system
Duplicated priority indoor units
Duplicated priority indoor units (For priority indoor unit)
(Displayed in priority indoor unit)
Duplicated priority indoor units
Duplicated priority indoor units (For indoor units without priority)
(Displayed except priority indoor unit)
There is indoor unit which indoor group address was not set
Unset indoor group address
(Detected also at indoor unit side)
Unset outdoor unit capacity Capacity of outdoor unit is not set. (Exchange service P .C. board.)
Disagreed error of outdoor model Former model of outdoor unit (Before 3 series) was connected.
Refrigerant change unit system error COOL/HEAT cycle error by mispiping, etc was detected.
No. of connected heat unit over There are 3 or more connected heat units.
Heat unit was not connected, or combination of No. of outdoor units with No. of
No. of connected heat unit error
heat units defective.
No. of connected outdoor units over No. of connected outdoor units exceeded 4 units
IPDU quantity error No. of IPDU (P .C. board) in inverter box is few.
There is indoor unit which abnormally stops by outer error input in 1 system.
Outside error input in indoor (Interlock)
(← Indoor unit detected.)
Outdoor unit discharge (TD1) temp. error High temp. error was detected at outdoor discharge temp. sensor (TD1).
Open phase shortage: Power failure error When power supply was turned on, open phase shortage was detected.
Inverter DC voltage (Vdc) error Over current/Current shortage was detected at inverter DC voltage.
Description