Carrier MMY-MAP0964FT6UL - Page 149

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Check code
Location
of
detection
System statusDescription
Error detection
condition(s)
Check items (locations)
Outdoor 7-segment display Main
remote
controller
Check
code
Sub-code
I/F01: TS condition
P15P15
P17 —P17
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: 140˚F (60˚C)
In heating operation: 104˚F (40˚C)
• Check for insufficiency in
refrigerant quantity.
• Check outdoor service valves
(discharge gas side, suction
gas side, liquid side) to
confirm full opening.
• Check PMVs (PMV1, 2, 4) for
clogging.
• Check resistance
characteristics of TS1 sensor.
• Check for defect in 4-way
valve.
• Check SV4 circuit for leakage
• Check SV5 circuit leakage.
• Check mispiping of discharge
gas/suction gas main pipes.
• Check Cool/Heat FS unit.
Check SVD valve, SVS valve
leakage.
(Check SVDD valve, SVSS
valve leakage.)
Connecting piping to FS unit
Mispiping of (discharge gas/
suction gas)
Gas
leakdetection
(TS1 condition)
I/F All stop Discharge temperature (TD2)
exceeds 239˚F (115˚C).
• Check outdoor service valves
(discharge gas side, suction
gas side, liquid side) to
confirm full opening.
• Check outdoor PMVs
(PMV1, 2, 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, SV42 and SV43).
• Check SV5 valve circuit
leakage.
• Check SV6 circuit (Clogging,
valve operation error)
• Check mispiping of discharge
gas/suction gas main pipes.
• Check Cool/Heat FS unit.
Check SVD valve, SVS valve
leakage.
(Check SVDD valve, SVSS
valve leakage.)
Connecting piping to FS unit
Mispiping of (discharge gas/
suction gas)
Check wiring between FS unit
and indoor unit, connection of
connectors
Check miswiring of SVS/SVD
valve.
Discharge
temperature TD2
error
I/F02: TD condition All stop Protective shutdown due to
sustained discharge
temperature (TD1, TD2 or TD3)
at or above 226˚F (108˚C) for at
least 10 minutes is repeated
four times or more.
• Check for insufficiency in
refrigerant quantity.
• Check PMVs (PMV 1, 2, 4) for
clogging.
• Check resistance
characteristics of TD1, TD2
and TD3 sensors.
• Check indoor filter for
clogging.
• Check piping for clogging.
• Check SV4 circuit (for leakage
or coil installation error).
• Check mispiping of discharge
gas/suction gas main pipes.
• Check Cool/Heat FS unit.
Check SVD valve, SVS valve
leakage.
(Check SVDD valve, SVSS
valve leakage.)
Connecting piping to FS unit
Mispiping of (discharge gas/
suction gas)
Check wiring and connection
of connectors between FS
unit and indoor unit.
Check miswiring of SVS/SVD
valves.
Gas leak
detection
(TD condition)