Toshiba MMY-MAP0806HT8(J)P Service Manual page 140

Check code
Outdoor 7-segment display
Sub-code
A3-IPDU Fan-IPDU A3-IPDU
1 2 1 2 1
01 ○ 10
02 ○ 11 ○
03 ○ ○ 12
08 ○ 13 ○
09 ○ ○ 18
L 2 9
0A ○ ○ 19 ○
0B ○ ○ ○ 1A
1B ○
Circle (O): Faulty IPDU
L 3 0 D e e t c e t d n i d o r o u n t i N . o
P 0 3 –
00: Open phase detected
P05
01: Compressor 1
02: Compressor 2
01: Compressor 1
P07
02: Compressor 2
P 1 0 n I d o r o u n t i N . o d e e t c e t d
P 1 3 –
01: TS condition
P15
02: TD condition
P 1 7 –
P 1 9 O u d t o r o u n t i N . o d e e t c e t d
P 2 0 –
Display of receiving unit
TCC-LINK Indicator light block
central control
or main remote
Operation Timer Ready
controller
display
Fan-IPDU
2 1 2
○
○
○ ○
○ ○
○ ○
L 2 9
○ ○
○ ○ ○
○ ○ ○
L ( 3 ) 0
P 0 3
P 0 5
P 0 7
P ( 1 ) 0
P 1 3
P 1 5
P 1 7
P 1 9
P 2 0
Typical problem site
Flash
There are insufficient number of IPDUs (P.C.
I S M E r r r o n i n u m b r e f o P I D U s
boards) in inverter box.
Indoor unit has been shut down for external error
Indoor external error input
I S M input in one refrigerant line (detected by indoor
(interlock)
unit).
Outdoor discharge (TD1) Outdoor discharge temperature sensor (TD1) has
A L T
temperature error detected abnormally high temperature.
Open phase/power failure
Open phase is detected when power is turned on.
Inverter DC voltage (Vdc)
A L T Inverter DC voltage is too high (overvoltage) or too
error
low (undervoltage).
MG-CTT error
Temperature sensor built into IPM (TH) detects
Heat sink overheating
A L T
error overheating.
Indoor unit has been shutdown in one refrigerant
A L T n I d o r o u n t i o v e f r o l w line due to detection of overflow (detected by
indoor unit).
Outdoor liquid backflow State of refrigerant cycle circuit indicates liquid
A L T
detection error backflow operation.
Outdoor suction temperature sensor (TS1) detects
A L T G a s e l a k d e e t t c o i n sustained and repeated high temperatures that
exceed standard value.
Outdoor discharge (TD2) Outdoor discharge temperature sensor (TD2)
A L T
temperature error detects abnormally high temperature.
4-way valve reversing Abnormality in refrigerating cycle is detected
A L T
error during heating operation.
Activation of high-pressure High pressure (Pd) sensor detects high pressure
A L T
protection that exceeds standard value.
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Description of problem
MG-CTT: Magnet contactor