Check code
Location
of
detection
Description
System status
Error detection
condition(s)
Check items (locations)
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
P13 P13
–
I/F
Outdoor liquid
backflow
detection error
All stop
<During cooling operation>
When system is in cooling
operation, high pressure is
detected in follower unit that
has been turned off.
<During heating operation>
When system is in heating
operation, outdoor PMV 1 or
3
continuously registers
opening of
3
00p or less
while under
superheat
control.
• Check full-close operation
of outdoor PMV (1,
3
, 4).
• Check for defect in Pd or
Ps sensor.
• Check gas balancing
circuit (SV2) for clogging.
• Check balance pipe.
• Check SV3B circuit for
clogging.
• Check defect in outdoor
P.C. board (I/F).
• Check capillary of oil
separator oil return circuit
for clogging.
• Check for leakage of check
valve in discharge pipe
convergent section.
P15
P15
01: TS condition
I/F
Gas
leakdetection
(TS1 condition)
All stop
Protective shutdown due to
sustained suction
temperature at or above
judgment criterion
for at least 10 minutes is
repeated four times or more.
<TS error judgment criterion>
In cooling operation: 60°C
In heating operation: 40°C
• Check for insufficiency in
refrigerant quantity.
• Check outdoor service
valves (gas side, liquid
side) to confirm full
opening.
• Check PMVs (PMV1,
3
) for
clogging.
• Check resistance
characteristics of TS1
sensor.
• Check for defect in 4-way
valve.
• Check SV4 circuit for
leakage
02: TD condition
I/F
Gas leak
detection
(TD condition)
All stop
Protective shutdown due to
sustained discharge
temperature (TD1 or TD
2
)
at or above 108 °C for at
least 10 minutes is repeated
four times or more.
• Check for insufficiency in
refrigerant quantity.
• Check PMVs (PMV 1,
3
)
for clogging.
• Check resistance
characteristics of TD1
and TD
2
sensors.
• Check indoor filter for
clogging.
• Check piping for clogging.
• Check SV4 circuit (for
leakage or coil installation
error).
P17 P17
–
I/F
Discharge
temperature
TD2 error
All stop
Discharge temperature (TD2)
exceeds 115°C.
• Check outdoor service
valves (gas side, liquid
side) to confirm full
opening.
• Check outdoor PMVs
(PMV1,
3
, 4) for clogging.
• Check resistance
characteristics of TD2
sensor.
• Check for defect in 4-way
valve.
• Check SV4 circuit for
leakage.
• Check SV4 circuit (for
wiring or installation error
involving SV41 and
SV4
2
).
−
1
81
−
AMP Air Conditioning
www.ampair.co.uk | [email protected]
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