124
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 connection of
high-pressure SW
connector.
Check for trouble in PD
pressure sensor.
Check outdoor service
valves (gas side, liquid
side) to confirm full
opening.
Check for trouble in
outdoor fan.
Check for trouble in
outdoor fan motor.
Check outdoor PMV for
clogging.
Check indoor/outdoor
heat exchangers for
clogging.
Check for short-circuiting
of outdoor
suction/discharge air
flows.
Check SV2 circuit for
clogging.
Check for trouble in
outdoor P.C. board (I/F).
Check for trouble in indoor
fan system (possible
cause of air flow
reduction).
Check opening status of
indoor PMV.
Check indoor-outdoor
communication line for
wiring error.
Check for faulty operation
of check valve in
discharge pipe conver-
gent section.
Check gas balancing SV4
valve circuit.
Check SV5 valve circuit.
Check for refrigerant
overcharging.
High-pressure SW is
activated.
All stop
Activation of
high-pressure
SW
IPDU
P04
P04
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2016/04/08 17:21:09
2016/04/08 17:21:09