122
H03
H03
–
IPDU
Current
detection circuit
trouble
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 trouble in outdoor
P.C. board (A3-IPDU).
H04
H04
–
I/F
Compressor
case thermostat
operation
All stop
Compressor case thermostat
performed protective
operation.
Check compressor case
thermostat circuit.
(Connector, wiring, P.C.
board)
Check full opening of
service valve.
(Gas and liquid side)
Check outdoor PMV
clogging.
Check SV4 circuit leakage.
Check miswiring /
misinstallation of SV4.
Check valve open status of
indoor PMV.
Check 4-way valve trouble.
Check refrigerant amount
shortage.
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 PMV for
clogging.
Check for trouble in SV2 or
SV4 circuits.
Check for defect in low-
pressure 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.
L03
–
–
Indoor
unit
Duplicated
indoor outdoor
unit
Stop of
corresponding
unit
There is more than one
outdoor unit in group.
Check indoor addresses.
Check for any change
made to remote controller
connection (group /
individual) since indoor
address setting.
L04
L04
–
I/F
Duplicated
outdoor line
address
All stop
There is duplication in line
address setting for outdoor
units belonging to different
refrigerant piping systems.
Check line addresses.
L05
–
–
I/F
Duplicated
priority indoor
unit (as
displayed on
priority indoor
unit)
All stop
More than one indoor unit
has been set up as priority
indoor unit.
Check display on priority
indoor unit.
L06
L06
No. of priority
indoor units
I/F
Duplicated
priority indoor
unit (as
displayed on
indoor unit other
than priority
indoor unit)
All stop
More than one indoor unit
have been set up as priority
indoor unit.
Check displays on priority
indoor unit and outdoor
unit.
Location
of
detection
Description
System status
Check code detection
condition(s)
Check items (locations)
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
Check code
Check SV5 leak.
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2016/04/08 17:21:08
2016/04/08 17:21:08
AMP Air Conditioning
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