– 52 –
Check code
Location
of
detection
Description
System status
Error detection
condition(s)
Check items (locations)
• Check Compressor 2 case
thermo circuit.
(Connector, Wiring, Circuit
board)
• Open and check the
service valve.
(Gas side, Liquid side)
• Check the outdoor PMV
clogging
(PMV1, 2).
• Check the SV42 circuit.
• Check the SV4 circuit
(SV41 / 42 miswiring).
• Check the opening status
of indoor PMV.
• Check the four-way valve
error.
• Check the refrigerant
shortage.
I/F
—
Compressor 2
case thermo
activation
All stop
Compressor 2 case thermo
was activated.
H14
H14
• Check installation of TD2
sensor.
• Check connection of TD2
sensor connector and
wiring.
• Check resistance
characteristics of TD2
sensor.
• Check for defect in outdoor
P.C. board (I/F).
I/F
—
TD2 sensor
miswiring
(incomplete
insertion)
All stop
Air discharge temperature of
(TD2) does not increase
despite compressor 2 being
in operation.
H15
H15
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
• Check connection of TK1
sensor connector.
• Check resistance
characteristics of TK1
sensor.
• Check for defect in outdoor
P.C. board (I/F).
I/F
Error in
temperature
sensor for oil
level detection
01: TK1 sensor
error
02: TK2 sensor
error
03: TK3 sensor
error
04: TK4 sensor
error
05: TK5 sensor
error
All stop
Sensor resistance is infinity
or zero (open / short circuit).
• Check connection of TK2
sensor connector.
• Check resistance
characteristics of TK2
sensor.
• Check for defect in outdoor
P.C. board (I/F).
All stop
Sensor resistance is infinity
or zero (open / short circuit).
• Check connection of TK3
sensor connector.
• Check resistance
characteristics of TK3
sensor.
• Check for defect in outdoor
P.C. board (I/F).
All stop
Sensor resistance is infinity
or zero (open / short circuit).
• Check connection of TK4
sensor connector.
• Check resistance
characteristics of TK4
sensor.
• Check for defect in outdoor
P.C. board (I/F).
All stop
Sensor resistance is infinity
or zero (open / short circuit).
• Check connection of TK5
sensor connector.
• Check resistance
characteristics of TK5
sensor.
• Check for defect in outdoor
P.C. board (I/F).
All stop
Sensor resistance is infinity
or zero (open / short circuit).
H08
H08
Indoor unit (including Hot Water Module)