Toshiba Super MMY-MAP0801HT8 - Page 143

143
Check code
Main
remote
controller
L30
—
P01
P03
P04
P05
Outdoor 7-segment display
Check code Sub-code
L30 Detected indoor address
L31 —
——
P03 —
P04 01: Compressor 1 side
02: Compressor 2 side
P05 01: Power supply open
phase
02: Power supply negative
phase
AI-NET
central control
remote controller
b6
—
11
1E
21
AF
Detected
position
Indoor
I/F
Indoor
I/F
I/F
I/F
Check code name
Interlock in indoor unit
from outside
Extended IC (Integrated
Circuit) error
Indoor fan motor error
Discharge temp TD1
error
Actuation of high-
pressure SW
Open phase negative
phase
Status
Corresponding
unit only stops.
Operation
continues.
Corresponding
unit only stops.
All stop
All stop
All stop
Error detection condition
• Outside error input terminal
Detected signal to (CN80) for
more 1 minute
P.C. board (I/F) parts error
Discharge temp (TD1) exceeded
115°C.
High-pressure SW actuated.
• Open phase was detected when
the power turned on.
• Negative phase was detected
when the power turned on.
Check item (position)
n Outside device is connected to connector (CN80):
1) Check outside device error.
2) Check indoor P.C. board error.
n Outside device is not connected to connector
(CN80):
1) Check indoor P.C. board error.
Check indoor (I/F) P.C. board.
• Check the lock of fan motor (AC fan).
• Check cabling.
• Check full opening of outdoor service valves
(Gas side, Liquid side).
• Check clogging of outdoor PMV. (PMV1,2)
• Check characteristics of TD1 sensor resistance value.
• Check refrigerant shortage.
• Check 4-way valve error.
• Check leakage of SV41 circuit.
• Check SV4 circuit.
(Miscabling and misinstallation of SV41 and SV42)
• Check Pd pressure sensor error.
• Check full opening of outdoor service valves
(Gas side, Liquid side).
• Check outdoor fan error.
• Check outdoor fan motor error.
• Check clogging of outdoor PMV. (PMV1,2)
• Check clogging of indoor/outdoor heat exchangers.
• Check short-circuiting of outdoor suction/discharge
air.
• Check clogging of SV2 circuit.
• Check outdoor P.C. board (I/F) error.
• Check indoor fan system error.
(Cause of air volume decrease)
• Check opening of indoor PMV.
• Check miscabling of communication line between
indoor and outdoor.
• Check operation error of check valve of discharge
pipe.
• Check SV4 valve circuit.
• Check SV5 valve circuit.
• Check refrigerant overcharge.
• Check outdoor power line.
• Check outdoor P.C. board (I/F) error.