Toshiba MMF-AP0156H-E (TR), Руководство по обслуживанию

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H02 H02
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
3 side IPDU Compressor error
(lockup) MG-CTT
error All stop Overcurrent is detected
several seconds after startup
of inverter compressor. • Check for defect in compressor.
• Check power supply voltage.
(380-415V ± 10 %).
• Check compressor system wiring,
particularly for open phase.
• Check connection of connectors /
terminals on A3-IPDU P.C. board.
• Check conductivity of case heater.
(Check for refrigerant entrapment
inside compressor.)
• Check for defect in outdoor P.C.
board (A3-IPDU).
• Check outdoor MG-CTT.
Check code
Location
of
detection
Description System status
Error detection
condition(s)
Check items (locations)
H03 H03
01: Compressor
1 side
02: Compressor
2 side
03: Compressor
3 side IPDU Current detection
circuit error All stop Current flow of at least
specified magnitude is
detected despite inverter
compressor having been shut
turned off. • Check current detection circuit
wiring.
• Check defect in outdoor P.C. board
(A3-IPDU).
H05 H05 —
I/F TD1 sensor
miswiring
(incomplete
insertion) All stop Discharge temperature of
compressor 1 (TD1) does not
increase despite compressor
being in operation. • Check installation of TD1 sensor.
• Check connection of TD1 sensor
connector and wiring.
• Check resistance characteristics of
TD1 sensor.
• Check for defect in outdoor P.C.
board (I/F).
H06 H06 —
I/F Activation of low-
pressure
protection All stop Low-pressure Ps sensor
detects operating pressure
lower than 0.02 MPa. • Check service valves to confirm full
opening (both gas and liquid sides).
• Check outdoor PMVs for clogging
(PMV1, 2).
• Check for defect in SV2 or SV4
circuits.
• Check for defect in lowpressure Ps
sensor.
• Check indoor filter for clogging.
• Check valve opening status of
indoor PMV.
• Check refrigerant piping for
clogging.
• Check operation of outdoor fan
(during heating).
• Check for insufficiency in refrigerant
quantity.
H07 H07 —
I/F Low oil level
protection All stop Operating compressor detects
continuous state of low oil
level for about 2 hours. <All outdoor units in corresponding
line to be checked>
• Check balance pipe service valve
to confirm full opening.
• Check connection and installation
of TK1, TK2, TK3, TK4, and TK5
sensors.
• Check resistance characteristics of
TK1, TK2, TK3, TK4, and TK5
sensors.
• Check for gas or oil leak in same
line.
• Check for refrigerant entrapment
inside compressor casing.
• Check SV3A, SV3B, SV3C, SV3D,
SV3E, and SV3F valves for defect.
• Check oil return circuit of oil
separator for clogging.
• Check oil equalizing circuit for
clogging.
MG-CTT: Magnet contactor
Outdoor 7-segment display
Check
code
Sub-code
Main
remote
controller