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Check code
Outdoor 7-segment display
Main
remote
Check
Sub-code
controller
code
P04
P04
Location
of
Description
System status
detection
IPDU
Activation of
All stop
high-pressure
SW
Error detection
condition(s)
High-pressure SW is
activated.
112
124
Check items (locations)
• Check connection of
high-pressure SW
connector.
• Check for defect in Pd
pressure sensor.
• Check outdoor service
valves (gas side, liquid
side) to confirm full
opening.
• Check for defect in
outdoor fan.
• Check for defect 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 defect in
outdoor P.C. board (I/F).
• Check for error 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.
- Quick Links:
- Service Manual
- Outdoor Unit
- Outdoor Unit
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Table of Contents
Troubleshooting
