122
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)
P10
P10
Indoor address
with trouble
Ob
Indoor
Indoor
overflow error
All stop
• Float switch operated.
• Float switch circuit disconnected or the
connector came off.
• 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.
P12
—
—
11
Indoor
Indoor fan
motor error
Corresponding
unit only stops.
The standard ducted unit air conditioner utilizes a direct current (DC) indoor fan motor that features current
limiting protection. In the event power is not isolated prior to service, the protective control circuit will activate
and stop the unit operating. The check code “P12”will be displayed on the remote controller-once service work
has been completed, this code can be cleared by switching off then on the electrical isolation device of the
indoor unit and pressing the operation stop button on the remote controller to reset the system
• The value of motor speed deviated from
target value was detected for certain time.
• Over-current protection operated.
• 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).
P13
P13
—
47
I/F
Outdoor liquid
back
detection
error
All stop
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.
• Check full close operation of outdoor PMV
• 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 TS sensor error.
P15
P15
01: TS condition
AE
I/F
Gas leak
detection
(TS1
condition)
All stop
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
• Check refrigerant shortage.
• Check full open of outdoor service valves (gas side, liquid side).
• Check outdoor PMV clogging.
• Check characteristics of TS1 sensor resistance value.
• Check 4-way valve error.
• Check leakage of SV4 circuit.
• Check leakage of SV5 circuit.
02: TD condition
AE
I/F
Gas leak
detection
(TD condition)
All stop
Discharge temperature TD1 or TD2 was
continuously 108°C or higher for 10 minutes.
• Check refrigerant shortage.
• Check outdoor PMV clogging.
• Check characteristics of TD1, TD2 sensor resistance value.
• Check indoor air filter clogging.
• Check pipe clogging.
• Check SV circuit (Valve leakage, misinstallation)
• Check mispiping of discharge gas/suction gas main pipe.
P17
P17
—
bb
I/F
Discharge
temp TD2
error
All stop
Discharge temperature (TD2) exceeded 115°C. • Check full opening of outdoor service valves (gas side, liquid side).
• Check clogging of outdoor PMV.
• Check characteristics of TD2 sensor resistance value.
• Check 4-way valve error.
• Check leakage of SV4 circuit.
• Check SV4 circuit.
• Check leakage of SV5 valve circuit.
• Check mispiping of discharge gas/suction gas main pipe.