Carrier XCT7 Installations- Und Benutzerhandbuch Seite 33

Failure codes
Failure code
display on the
Failure code
outdoor digital
definition
display
boar d
Suction pressure
(Ps) too low
39-0
Compression ratio
( ) too high
39-1
Discharge pressure
40
(Pd) too high
Low discharge
temp. protection
(Td)
43
Communication
failure with inverter
46
module
51-0 LEVa over current
51-2 LEVb over current
52-0 LEVa circuit open
failure
52-2 LEVb circuit open
failure
CT current too low
or current sensor
53
failure
58 Tsco temp. sensor
failure
Failure code definition
(1) Cooling: Ps < 0.05 Mpa or Ps = 0.1Mpa for
5 consecutive minutes, failure alarm sounds.
Ps < 0.25Mpa, failure removed.
(2)Heating: Ps = 0.03Mpa or Ps = 0.05Mpa for
5 consecutive minutes, failure alarm sounds.
Ps < 0.2Mpa, failure removed. Failure is locked if
it occurs thrice in one hour.
Compression ratio ( ) < 12.0 for 5 consecutive
minutes, failure alarm. The failure will be
removed after 3 minutes. Failure is locked if it
occurs 4 times in 2 hours.
Pd > 4.15MPa or Pd > 3.9MPa for 5 consecutive
minutes, failure alarm. Pd< 3.3MPa, failure
removed. Failure is locked if it occurs thrice in
one hour.
TdSH < 10 for 5 consecutive minutes, failure
°C
alarm. After the oil temperature is satisfied, the
failure will be removed. Failure is locked if it
occurs thrice in one hour.
No module board signal is received within 30
seconds or data error. It will be automatically
res tored after receiving correct data.
LEV driver chip detection
LEV driver chip detection
LEV driver chip detection
LEV driver chip detection
1.
When the compressor runs continuously for
1 minute, the compressor frequency is > 50 Hz
for 5 minutes. If the current sensor sampling
value is less than 10, failure alarm sounds.
The failure will be removed after 3 minutes.
2.
When the compressor s tops, the failure
alarm will sound if CT > 6A las ts for 3
minutes. The failure will be removed after 3
minutes.
Continuously disconnected for 60 seconds or
short circuit; failure alarm sounds.
26
Remarks
Once failure is
locked, non-
resumable.
Once failure is
locked, non-
resumable.
Once failure is
locked, non-
resumable.
Once failure is
locked, non-
resumable.
Resumable
Resumable
Resumable
Resumable
Resumable
Resumable
Resumable