Toshiba MMU-AP0121MH - Manual (Page 62)

62
Check code
Main
remote
controller
P22
P26
P29
P31
Outdoor 7-segment display
Check code
P22
P26
P29
—
Auxiliary code
0: IGBT shortage
1: Position detection circuit error
3: Motor lock error
4: Motor current error detection
C: TH sensor temp. error
D: TH sensor error
E: Vdc error
01: Compressor 1 side
02: Compressor 2 side
01: Compressor 1 side
02: Compressor 2 side
—
Detected
position
FAN-IPDU
IPDU
IPDU
Indoor
Check code name
Outdoor fan IPDU error
G-Tr short-circuit
protection error
Compressor position
detection circuit error
Other indoor error
(Group follower unit error)
Status
All stop
All stop
All stop
All stop
All stop
All stop
All stop
All stop
All stop
Corresponding
unit only stops.
Error detection condition
(Auxiliary code: 0)
• Short-circuit current was detected at start time.
• Short-circuit current was detected when
checking IGBT short-circuit before start time.
(Auxiliary code: 1)
• The standard value of detection circuit of fan
IPDU current fluctuated at start time.
(Auxiliary code: 3)
• Abnormal current was detected within 30
seconds after start time.
(Auxiliary code: 4)
• Short-circuit current was detected when
2 seconds or more passed after start time.
• Over-current was detected when 30 seconds
or more passed after start time.
(Auxiliary code: C)
• Heat sink sensor (TH) of fan IPDU detected
95°C error.
(Auxiliary code: D)
• Heat sink sensor (TH) of fan IPDU detected
short-circuiting or open.
(Auxiliary code: E)
• Input power supply voltage of the fan IPDU
over the setup value was detected.
• Input power supply terminal of the fan IPDU
was unconnected.
• Power supply P.C. board error of the fan IPDU
Instantaneous over-current was detected when
compressor started.
Position was not normally detected.
E07/L07/L03/L08 was detected when other
indoor unit in the group was defective.
Check item (position)
• Check fan motor. (Interphase short-circuit)
• Check fan IPDU error.
• Check fan IPDU error.
• Check fan motor. (Lock, phase missing)
• Check cause of abnormal overload at start time.
• Check connection of connector to fan motor.
• Check power supply voltage.
• Check fan IPDU error.
• Check outdoor fan system.
• Check fan IPDU error.
• Check fixation between fan IPDU and heat sink.
• Check fan IPDU error.
• Check input power supply voltage of the fan IPDU.
• Check power supply P.C. board error of the fan IPDU.
• Check error of external electrolytic condenser.
• Check connector connection and wiring on IPDU P.C. board.
• Check compressor error and defect of compressor coil.
• Check outdoor P.C. board (IPDU) error.
• Check connector connection and wiring.
• Check compressor error and defect of compressor coil.
• Check P.C. board (IPDU) error.
• Check indoor P.C. board.