Carrier MMY-MAP1204FT9UL - Check Codes: Outdoor Unit (Interface) (Continued)

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(Errors detected by IPDU featuring in SMMS-i standard outdoor unit - typical examples)
NOTE
The above check codes are examples only, and different check codes may be displayed depending on the
outdoor unit configuration (e.g. a Super Modular multi system). For details, see the service manual for the
outdoor unit.
Check code Display of receiving unit
Typical fault site Description of error
Outdoor 7-segment display TCC-LINK
central control
or main remote
controller
display
Indicator light block
Sub-code Flash
Ready Timer Operation
P15 Gas leak detectionALT
01: TS condition
02: TD condition
P15
Outdoor suction temperature sensor (TS1) detects
sustained and repeated high temperatures that
exceed standard value.
State of refrigerant cycle circuit indicates liquid
backflow operation.
Outdoor liquid backflow detection
error
P13— ALTP13
Outdoor discharge temperature sensor (TD2) detects
abnormally high temperature.
Outdoor discharge (TD2)
temperature error
P17— ALTP17
Outdoor discharge temperature sensor (TD3) detects
abnormally high temperature.
Outdoor discharge (TD3)
temperature error
P18— ALTP18
Abnormality in refrigerating cycle is detected
during heating operation.
P19Outdoor unit No. detected 4-way valve reversing errorALTP19
High pressure (Pd) sensor detects high pressure
that exceeds standard value.
Activation of high-pressure
protection
P20 ALT—P20
Check code Display of receiving unit
Typical fault site Description of error
Outdoor 7-segment display TCC-LINK
central control
or main remote
controller
display
Indicator light block
Sub-code Flash
Ready Timer Operation
F13
Error in temperature sensor built
into indoor IGBT (TH)
ALTF13
01: Compressor 1
02: Compressor 2
03: Compressor 3
P26
Activation of G-Tr (IGBT)
short-circuit protection
ALTP26
Short-circuit protection for compressor motor
driver circuit components is activated (momentary
overcurrent).
01: Compressor 1
02: Compressor 2
03: Compressor 3
P29
Compressor position detection
circuit error
Compressor motor position detection error is
detected.
ALTP29
01: Compressor 1
02: Compressor 2
03: Compressor 3
H01
Inverter current (Idc) detection circuit detects
overcurrent.
Temperature sensor built into indoor IGBT (TH)
has been open/short-circuited.
Compressor breakdown
H01
01: Compressor 1
02: Compressor 2
03: Compressor 3
H03
Abnormal current is detected while inverter
compressor is turned off.
Current detection circuit error
H03
01: Compressor 1
02: Compressor 2
03: Compressor 3
P07
Temperature sensor built into IGBT (TH) detects
overheating.
Heat sink overheating error
P07
01: Compressor 1
02: Compressor 2
03: Compressor 3
P22
ALT
ALT Outdoor fan IPDU error Outdoor fan IPDU detects error. P22
0
∗
: IGBT circuit
1
∗
: Position detection
circuit error
3
∗
: Motor lockup error
4
∗
: Motor current detection
C
∗
: TH sensor error
D
∗
: TH sensor error
E
∗
: Inverter DC voltage error
(outdoor fan)
Note:
Although letters 0 to
F appear at locations
indicated by “
∗
”,
please ignore them.
H02 Compressor error (lockup) Compressor lockup is detected H02
01: Compressor 1
02: Compressor 2
03: Compressor 3
P04 ALT Activation of high-pressure SW High-pressure SW is activated. P04
01: Compressor 1
02: Compressor 2
03: Compressor 3