Toshiba MMC-P0151H, Руководство по обслуживанию

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3-45
Check
code
Detected
position
Check code
name
Cause
(Position)
Trouble detection
condition
Check item (Position)
17 Inverter
Current
detection
circuit system
alarm Inverter current
detection
circuit Status that current flows
over the set value thus
inverter compressor
stopped is detected. • Check wiring of current detection circuit
system.
• Check outdoor P.C. board (IPDU) error.
18 Interface TE1 sensor
alarm
Outdoor heat
exchanger
sensor (TE1) Sensor resistance value
was infinity or zero
(Open, Short) (automatic
backup operation after
judgment)
• Check connection of TE1 sensor connector.
• Check characteristics of TE1 sensor
resistance value.
• Check outdoor P.C. board (Interface) error.
1C Interface Extension IC,
EEPROM
alarm
Outdoor
interface P.C.
board circuit Outdoor P.C. board
(Interface) is not
operating correctly • Check power supply voltage.
• Check power supply noise.
• Check outdoor P.C. board (Interface) error.
1d Outdoor Compressor
alarm Inverter
compressor
system circuit Over-current was
detected several
seconds after inverter
compressor was
activated. • Check inverter compressor lock.
• Check power supply voltage (AC342–457V).
• Check wiring of inverter compressor system
and miss-phase.
• Check connection of connector on IPDU P.C.
board.
• Conductive check for crank case heater.
(Activation error check by liquid stagnation in
compressor)
• Check outdoor P.C. board (IPDU) error.
1F Outdoor Compressor
break down Inverter current
detection
circuit After inverter frequency
reduced by current
release, over-current
was detected and
stopped. • Check power supply voltage (AC342–457V
for 50Hz, AC342–418V for 60Hz).
• Check cause of abnormal overload operation.
• Check current sensor detection circuit system.
• Check outdoor P.C. board (IPDU) error.
• Check outdoor fan system error.
• Check for blockage inside of cooling duct of
heat sink.
21 Outdoor Inverter high-
pressure SW
system alarm Inverter high-
pressure SW
system circuit High-pressure SW or IOL
operated.
n
High-pressure
Pd
≥
2.5MPa :
[21] is displayed.
n
High-pressure
Pd < 2.5MPa :
[E5] is displayed.
• Check inverter high-pressure SW error.
• Check IOL operation and case temp.
(Check cause of overload operation.)
• Check service valve is fully open.
• Check connection of outdoor fan connector.
• Check outdoor fan motor, running capacitor
error.
• Check for blockage in outdoor PMV.
1) Refrigerant choke circuit (PMV A)
2) Cooling bypass circuit (PMV B)
3) Liquid line check valve
(Cooling only model)
• Check for blockage in outdoor/indoor heat
exchanger.
• Short-circuit status between outdoor
discharge air and suction air
• Check Pd pressure sensor error.
• Check for blockage in hot gas bypass SV2
circuit.
• Check outdoor P.C. board (Interface) error.
• Check open valve status of indoor PMV.
• Check miswiring of communication line
between indoor and outdoor.