Self Diagnostic Function - Toshiba HFCR407C Service Manual

STANDBY
display
Over capacity
Abnormal phase connection
Indoor drain overflow alarm
Remote
Remote controller serial signal circuit "99"
controller
Indoor sensor (TA) short or open circuit
Indoor heat exchanger sensor (TC1) short circuit
Indoor heat exchanger sensor (TC2) short circuit
Indoor pressure sensor short circuit
Motor short circuit
Drain pump fault
Refrigerant circulation amount shortage judgement
Indoor
Indoor/outdoor communication short circuit
unit
Central management communication short circuit
Central management address set-up fault
External input display fault
(Low level refrigerant leak if RBC-RD1-PE fitted)
External interlock display fault
(High level refrigerant leak if RBC-RD1-PE fitted)
Indoor Unit miswiring/misconnection
Indoor PC board short circuit
Outdoor
unit
High pressure SW circuit
G-Tr short-circuit protective operation
Current detection circuit
Compressor error
Compressor breakdown
TH sensor alarm
Abnormal overheat of heat sink
14
*: No display on the remote controller
NOTE: To retrieve fault codes, ensure rotary switches 1, 2 and 3 on the Outdoor Interface PCB (MCC-1343-01) are all set
to 1 (factory default setting).
Individual Indoor Fault Codes can be retrieved by referring to page 70.
Troubleshooting

Self diagnostic function

Liquid crystal remote controller CHECK code
Remote controller
Indoor unit
Outdoor IPDU
Outdoor unit interface segment CHECK code
Inverter outdoor unit
Inverter serial signal short circuit
(High level refrigerant leak if RBC-RD2-PE fitted)
Four-way valve alarm
Outdoor heat exchanger sensor (TE1) short circuit
Discharge temp. sensor (TD1) short circuit
Discharge temp. sensor (TD2) short circuit
"OC"
Suction temp. sensor (TS) short circuit
"93"
High pressure sensor (Pd) short circuit
"94"
Low pressure sensor (Ps) short circuit
"b9"
Pressure sensor (Pd/Ps) miswiring
"11"
Discharge temp. (TD1) alarm
"0b"
Discharge temp. (TD2) alarm
"9F"
Low Hz time discharge temp. (TD1) alarm
"95"
Suction temp. (TS) alarm
"97"
High pressure (Pd) protective operation
"98"
Low pressure (Ps) protective operation
"b5"
Fixed-speed 1 high pressure SW system alarm
Fixed-speed 2 high pressure SW system alarm
"b6"
Fixed-speed 1 IOL, OCR alarm
Fixed-speed 2 IOL, OCR alarm
"9A"
Inverter IOL short circuit
"12"
Mg-SW protective operation
Outdoor Unit power source phase order miswiring
Extension IC, EEPROM short circuit
Indoor/Outdoor error
Indoor/Outdoor communication short circuit
No. of connected indoor units over capacity
Connected indoor units over capacity
Outdoor unit back-up operation prevented
Reduction in the number of connected outdoor units
Outdoor unit connection over limit
"21"
Slave outdoor address incorrect
"14"
Master outdoor unit set-up alarm
"17"
Server outdoor unit error
"1d"
Oil temp. (TK1) sensor alarm
"1F"
Oil temp. (TK2) sensor alarm
"d3"
Oil temp. (TK3) sensor alarm
"dA"
Low oil level detection
Oil temp. (TK1) detection alarm
Oil temp. (TK2) detection alarm
SV3C valve blockage detection
SV3C valve leakage detection
Outdoor PMV refrigerant leakage detection
Indoor address undefined*
Outdoor address undefined*
Missing phase
78
Fixed-
speed
outdoor
unit
"04" -
"08" -
"18" "18"
"A0" "A0"
"A1" "A1"
"A2" "A2"
"AA" "AA"
"b4" "b4"
"Ab" "Ab"
"A6" "A6"
"bb" "bb"
"AE" "AE"
"A7" "A7"
"22" "22"
"bE" "bE"
"E1" "E1"
"F0" "F0"
"E6" "E6"
"F1" "F1"
"E5" -
"bd" "bd"
"AF" "AF"
"1C" "1C"
"Eb" -
"95" -
"96" -
"89" -
"8c" -
"8d" -
"8E" -
"8F" -
"d1" "d1"
"d2" -
"d4" "d4"
"d5" "d5"
"d6" "d6"
"d7" "d7"
"d8" "d8"
"d9" "d9"
"db" "db"
"dC" "dC"
"dd" "dd"
"dE" -
"dF" -
"87" "87"