123
Check code
Outdoor 7-segment display
Wired
remote
controller Check code
Auxiliary code
AI-NET
central control
remote controller
Detected
position
Check code
name
Status
Error detection condition
Check item (position)
P19
P19
Detected outdoor
unit No.
8
I/F
4-way valve
operation error
All stop
When abnormal refrigerating cycle data was
detected in heating
• Error of 4-way valve error
• Check coil error and connector connection of 4-way valve.
• Check characteristics of TS1/TE1 sensor resistance value.
• Check characteristics of Pd, Ps pressure sensor output voltage.
• Check misconnection of TE1 and TL sensors.
P20
P20
—
22
I/F
High-pressure
protective
operation
All stop
Pd sensor detected 3.6MPa or more.
• Check Pd pressure sensor error.
• Check full opening of service valves (Gas side, Liquid side).
• Check outdoor fan error.
• Check outdoor fan motor error.
• Check clogging of outdoor PMV.
• Check clogging of indoor/outdoor heat exchangers.
• Check air short-circuiting in outdoor unit.
• Check clogging of SV2 circuit.
• Check outdoor P.C. board (I/F) error.
• Check indoor fan system error. (Cause of air volume decrease)
• Check valve opening of indoor PMV.
• Check miscabling of communication line between indoor and outdoor.
• Check operation error of check valve of discharge pipe.
• Check circuit of gas balance SV4 valve.
• Check mispiping of discharge gas/suction gas main pipe.
• Check operation error of check valve of discharge gas pipe.
• Check clogging of circuit at auxiliary heat exchanger side.
(Miswiring, Disconnection, Wiring missing)
• Check circuit of SV5 valve.
• Check refrigerant overcharge.
P22
P22
*A: Fan motor
current error
1A
FAN-
IPDU
Outdoor fan
IPDU error
All stop
(Auxiliary code: *A)
• Short-circuit current was detected when 2
seconds or more passed after start time.
• Over-current was detected when 30
seconds or more passed after start time.
• Check power supply voltage.
• Check fan IPDU error.
*d: Fan motor
lock
G-Tr short-circuit
protection error
All stop
(Auxiliary code: *d)
• Abnormal current was detected within 30
seconds after start time.
• Check fan motor. (Lock, phase missing)
• Check cause of abnormal overload at start time.
• Check connection of connector to fan motor.
P26
P26
01: Compressor 1
14
IPDU
All stop
Instantaneous over-current was detected
when compressor started.
• Check connector connection and wiring on IPDU P.C. board.
• Check compressor error and defect of compressor coil.
• Check outdoor P.C. board (IPDU) error.
P29
P29
01: Compressor 1
16
IPDU
Compressor
position detection
circuit error
All stop
Position detected was not normal.
• Check connector connection and wiring.
• Check compressor error and defect of compressor coil.
• Check P.C. board (IPDU) error.
P31
—
—
47
Indoor
Other indoor error
(Group follower
unit error)
Corresponding
unit only stops.
E07/L07/L03/L08 was detected when other
indoor unit in the group was defective.
• Check indoor P.C. board.