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Check code
Main
remote
controller
P07
P10
P12
P13
P15
Outdoor 7-segment display
Check code
P07
P10
—
P13
P15
Auxiliary code
01: Compressor 1 side
02: Compressor 2 side
Indoor address with
trouble
—
—
01: TS condition
02: TD condition
Detected
position
IPDU
I/F
Indoor
Indoor
I/F
I/F
I/F
Check code
name
Heat sink overheat
error
Indoor overflow
error
Indoor fan motor
error
Outdoor liquid
back detection
error
Gas leak detection
(TS1 condition)
Gas leak detection
(TD condition)
Status
All stop
All stop
Corresponding
unit only stops.
All stop
All stop
All stop
Error detection condition
IGBT built-in temp sensor (TH) was
overheated.
• Float switch operated.
• Float switch circuit disconnected or the
connector came off.
• The value of motor speed deviated from
target value was detected for certain time.
• Over-current protection operated.
<In heating>
While the system is operating in HEAT mode,
outdoor PMV of which opening degree was
100 pulse or less for a certain time.
Suction temp exceeded the judgment
standard temp for 10 minutes or more.
<TS error judgment standard temperature>
In cooling operation: 60°C or higher
In heating operation: 40°C or higher
Discharge temperature TD1 or TD2 was
continuously 108°C or higher for 10 minutes.
Check item (position)
• Check power voltage.
• Check outdoor fan system error.
• Check clogging of heat sink cooling duct.
• Check fixation between IGBT and heat sink. (Check screwing and contact.)
• Check IPDU error.(IGBT built-in temp sensor (TH) error).
• Check the float switch connector.
• Check operation of drain pump unit.
• Check the drain pump circuit.
• Check clogging of drain pipe.
• Check indoor P.C. board error.
• Check connection of fan connector and wiring.
• Check fan motor error.
• Check indoor P.C. board error.
• Check influence of outside air control.
• Check indoor type code (DN=10) and the capacity code (DN=11).
• Check full close operation of outdoor PMV (1, 2).
• Check Pd and Ps sensor error.
• Check clogging of SV2 circuit.
• Check clogging of 4-way valve error circuit.
• Check outdoor P.C. board (I/F) error.
• Check capillary clogging of oil return circuit from oil separator.
• Check TS1, TS2 sensor error.
• Check refrigerant shortage.
• Check full open of outdoor service valves (gas side, liquid side).
• Check outdoor PMV clogging (PMV1, 2).
• Check characteristics of TS1 sensor resistance value.
• Check 4-way valve error.
• Check leakage of SV4 circuit.
• Check leakage of SV5 circuit.
• Check mispiping of discharge gas/suction gas main pipe.
• Check Flow selector unit.
Check leakage of SVD valve and SVS valve. (Check leakage of SVDD valve and SVSS.)
Check mispiping of FS unit connecting pipe (Suction gas/Discharge gas),
wiring between FS unit and indoor unit, and connection of connectors.
Check miswiring of SVS/SVD valves.
• Check refrigerant shortage.
• Check outdoor PMV clogging (PMV1, 2).
• Check characteristics of TD1, TD2 sensor resistance value.
• Check indoor air filter clogging.
• Check pipe clogging.
• Check SV4 circuit (Valve leakage, misinstallation)
• Check mispiping of discharge gas/suction gas main pipe.
• Check Flow selector unit.
Check leakage of SVD valve and SVS valve. (Check leakage of SVDD valve and SVSS.)
Check mispiping of FS unit connecting pipe (Suction gas/Discharge gas),
wiring between FS unit and indoor unit, and connection of connectors.
Check miswiring of SVS/SVD valves.