Toshiba MCY-MHP0305HT, Service Manual

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121
F13 F13 –
IPDU TH sensor error All stop Sensor resistance is zero
(short circuit).
‡
Defect in IGBT built-in
temperature sensor
Replace IPDU P.C.
board.
F15 F15 –
I/F Outdoor
temperature
sensor wiring
error (TE, TL) All stop During compressor operation
in HEAT mode, TE
continuously provides
temperature reading higher
than indicated by TL by at
least specified margin for 3
minutes or more.
‡
Check installation of TE
and TL sensors.
‡
Check resistance
characteristics of TE and
TL sensors.
‡
Check for outdoor P.C.
board (I/F) error.
F16 F16 –
I/F Outdoor
pressure sensor
wiring error (Pd,
Ps) All stop Readings of high-pressure
Pd sensor and low-pressure
Ps sensor are switched.
Output voltages of both
sensors are zero.
‡
Check connection of high-
pressure Pd sensor
connector.
‡
Check connection of low-
pressure Ps sensor
connector.
‡
Check for defect in
pressure sensors Pd and
Ps.
‡
Check for error in outdoor
P.C. board (I/F).
‡
Check for deficiency in
compressive output of
compressor.
F23 F23 –
I/F Ps sensor error All stop Output voltage of Ps sensor
is zero.
‡
Check for connection error
involving Ps sensor and Pd
sensor connectors.
‡
Check connection of Ps
sensor connector.
‡
Check for defect in Ps
sensor.
‡
Check for deficiency in
compressive output of
compressor.
‡
Check for defect in 4-way
valve.
‡
Check for defect in outdoor
P.C. board (I/F).
‡
Check for defect in SV4
circuit.
F24 F24 –
I/F Pd sensor error All stop Output voltage of Pd sensor
is zero (sensor open-
circuited).
Pd > 4.15 MPa despite
compressor having been
turned off.
‡
Check connection of Pd
sensor connector.
‡
Check for defect in Pd
sensor.
‡
Check for defect in outdoor
P.C. board (I/F).
F29 – –
Indoor
unit Other indoor
error Stop of
corresponding
unit Indoor P.C. board does not
operate normally.
‡
Check for defect in indoor
P.C. board (faulty
EEPROM)
F31 F31 –
I/F Outdoor
EEPROM error All stop Outdoor P.C. board (I/F)
does not operate normally.
‡
Check power supply
voltage.
‡
Check power supply noise.
‡
Check for defect in outdoor
P.C. board (I/F).
IPDU Compressor
breakdown All stop Inverter current detection
circuit detects overcurrent
and shuts system down.
‡
Check power supply voltage.
(AC220-240V ± 10%).
‡
Check for defect in
compressor.
‡
Check for possible cause
of abnormal overloading.
‡
Check for defect in outdoor
P.C. board (IPDU).
H02 H02 –
IPDU Compressor
error (lockup) All stop Overcurrent is detected
several seconds after startup
of inverter compressor.
‡
Check for defect in
compressor.
‡
Check power supply voltage.
(AC220-240V ± 10%).
‡
Check compressor system
wiring, particularly for open
phase.
‡
Check connection of
connectors / terminals on
IPDU P.C. board.
‡
Check for defect in outdoor
P.C. board (IPDU).
Location
of
detection
Description System status
Error detection
condition(s)
Check items (locations)
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
Check code
‡
Check 4-way valve error.
H01 H01 –
98