Toshiba MMC-P0151H, Руководство по обслуживанию

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3-54
Check
code
Detected
position
Check
code name
Cause
(Position)
Trouble detection condition Check item (Position)
E5 Interface Inverter
IOL
operation
Inverter IOL
system
circuit Inverter IOL or high pressure
SW operated.
n
When high pressure
Pd
≥
2.5MPa,
[21] is displayed.
n
When high pressure
Pd < 2.5MPa,
[E5] is displayed.
• Check inverter high pressure SW error.
• Check inverter IOL operation and case
temp.
• Check overload operation cause and
refrigerant shortage.
• Check if service valve is fully open.
• Check indoor fan and connector connection.
• Check outdoor fan motor and running
capacitor error.
• Check for blockage of 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 of indoor/outdoor heat
exchanger.
• Short-circuit status of outdoor discharge air
suction air
• Check Pd pressure sensor error.
• Check for blockage of hot gas bypass SV2
circuit.
• Check outdoor P.C. board (interface) error.
• Check indoor fan error.
(Cause of air volume down)
• Check indoor PMV opening pulse.
• Check miswiring between indoor/outdoor
communication line.
E6 Interface Fixed-
speed side
IOL, OL
system
alarm (1)
Fixed-speed
side IOL,
OCR system
circuit
(Compressor
1) Fixed-speed side IOL, OCR
system or high pressure SW
operated.
n
When high pressure
Pd
≥
2.5MPa,
[High pressure SW system
error]
1) In case of compressor
1 : [E1] is displayed.
2) In case of compressor
2 : [F0] is displayed.
n
When high pressure
Pd < 2.5MPa,
[IOL, OCR system error]
1) In case of compressor
1 : [E6] is displayed.
2) In case of compressor
2 : [F1] is displayed.
• Check high pressure SW error of compressor
1, and check IOL, OCR operation.
• Check IOL operation of compressor 1 and
case temp. up.
(Check cause of overload operation.)
• Check operation and blockage of SV41 valve.
• Check if service valve is fully open.
• Check outdoor fan operation and connector
connection.
• Check outdoor fan motor and running
capacitor error.
• Check for blockage of 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 of indoor/outdoor
heat exchanger.
• Check Pd pressure sensor error.
• Check for blockage of hot gas bypass SV2
circuit.
• Check outdoor P.C. board (interface) error.
• Check indoor PMV opening pulse.
• Check miswiring between indoor/outdoor
communication line.
Eb Interface Outside
indoor
alarm input
Outside
alarm input
signal [b6] is
receiving
from indoor. • According to voltage input in
the outside input terminal of
indoor P.C. board
• The check code [b6] is
received from indoor unit.
• When outside device is connected to
connector (CN17)
1) Check outside device error.
2) Check failure of indoor main P.C.
board (MCC-1361)
• When outside device is not connected to
connector (CN17)
1) Check indoor main P.C. board
(MCC-1361)