–
82
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Check code
Main remote
controller
P01
P03
P04
P05
P07
P10
Outdoor 7-segment display
Check code
—
P03
P04
P05
P07
P10
Sub-code
—
—
01: Compressor 1 side
02: Compressor 2 side
01: Power supply open
phase
02: Power supply
negative phase
01: Compressor 1 side
02: Compressor 2 side
Indoor address with
trouble
Detected
position
Indoor
I/F
I/F
I/F
IPDU, I/F
Indoor
Check code name
Indoor fan motor error
Discharge temp TD1 error
Actuation of high-pressure SW
Open phase negative phase
Heat sink overheat error
Indoor overflow error
Status
Corresponding
unit only stops.
All stop
All stop
All stop
All stop
All stop
Error detection condition
Discharge temp (TD1) exceeded 115°C.
High-pressure SW actuated.
• Open phase was detected when the power
turned on.
• Negative phase was detected when the
power turned on.
IGBT built-in temp sensor (TH) was
overheated.
• Float switch operated.
• Float switch circuit disconnected or the
connector came off.
Check item (position)
• Check the lock of fan motor (AC fan).
• Check cabling.
• Check full opening of outdoor service valves
(Gas side, Liquid side).
• Check clogging of outdoor PMV. (PMV1,2)
• Check characteristics of TD1 sensor resistance value.
• Check refrigerant shortage.
• Check leakage of SV41 circuit.
• Check SV4 circuit.
(Miscabling and misinstallation of SV41 and SV42)
• Check Pd pressure sensor error.
• Check full opening of outdoor service valves
(Gas side, Liquid side).
• Check outdoor fan error.
• Check outdoor fan motor error.
• Check clogging of outdoor PMV. (PMV1,2)
• Check clogging of indoor/outdoor heat exchangers.
• Check short-circuiting of outdoor suction/discharge air.
• Check clogging of SV2 circuit.
• Check outdoor P.C. board (I/F) error.
• Check indoor fan system error.
(Cause of air volume decrease)
• Check opening of indoor PMV.
• Check miscabling of communication line between indoor
and outdoor.
• Check operation error of check valve of discharge pipe.
• Check SV4 valve circuit.
• Check refrigerant overcharge.
• Check outdoor power line.
• Check outdoor P.C. board (I/F) error.
• 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.
