Toshiba MMC-P0151H, Руководство по обслуживанию

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3-46
Check
code
Detected
position
Check code
name
Cause
(Position)
Trouble detection
condition
Check item (Position)
22 Interface High-pressure
protective
operation
High pressure
up protection
by high-
pressure Pd
sensor
detection value Pd sensor detected 3.0MPa
or more • Check Pd pressure sensor error.
• Check service valve full open.
• Check cause of overload operation.
• 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) 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 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.
89 Interface Indoor capacity
over
Total
connected
capacity over
of indoor units Total capacity of indoor
units135% (more than) total
capacity of outdoor units.
[NOTE]
When this code is displayed
after set up of change when
fault occurred on outdoor
unit, set up “Over capacity
was not detected.”.
Turn on SW9 Bit2 on
interface P.C. board of
inverter outdoor unit. • Check indoor unit connection capacity.
• Check indoor unit HP capacity.
• Check outdoor HP set up.
• Check outdoor P.C. board (IPDU) error.
8C Interface Outdoor
backup
operation
prohibited
Prohibited
status of
outdoor
backup
operation Operation mode of the
system changed to HEAT
while backup operation of
the outdoor unit was being
set up in cooling only model. • If there is a unit which outdoor backup
operation is being set up in cooling only
model, heating operation is not
performed.
8d Interface Reduction of
No. of
connected
outdoors
No. of
connected
outdoor unit
communication No. of connected outdoor
units was judged to be less
than No. of units stored in
memory of EEPROM
[NOTE]
If this code is displayed
when backup operation of
outdoor error was
performed, set “Alarm
clear”. • Check connection of communication.
• Check communication line between
outdoor units.
• Check power supply OFF (power supply
breaker) of outdoor unit.
• Check outdoor P.C. board (Interface)
error.
• Presence check of outdoor backup set up
8E Interface Excessive No.
of connected
outdoors
No. of
connected
outdoor unit
communication No. of outdoor units
exceeded 5. • Check connected No. of outdoor units.
(Max. 5 units per 1 system)
• Check communication line between
outdoor units.
• Check outdoor P.C. board (Interface)
error.
8F Interface Fixed-speed
outdoor
address
duplication
Duplication of
manual
address switch
set up of fixed-
speed outdoor Address No. of fixed-speed
outdoor unit was duplicated
under condition that
address set up of outdoor
unit was manual. • Check address switch set up of fixed-
speed outdoor.
• Check outdoor P.C. board (Interface)
error.
93 Indoor Indoor TC1
sensor alarm Indoor gas
pipe temp.
sensor (TC1) • Sensor resistance value
was infinity or zero (Open,
Short).
• Check connection of TC1 sensor
connector (CN20)
(Indoor main P.C. board (MCC-1361)).
• Check characteristics of TC1 sensor
resistance value.
• Check failure of indoor main P.C. board
(MCC-1361).