Quick Answer
Carel controllers display family-specific fault codes. On ir33 / SmartCella / UltraCella refrigeration controllers, E1–E14 flag NTC and serial probe faults, HI / LO mark high and low temperature alarms, and EE signals an EEPROM error. On µChiller and pCO chiller controllers, AL01–AL77 cover compressor overloads, HP / LP pressure trips, and probe B1–B8 faults.
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What error codes does Carel display?
not active ON probe 2 error= defrost automatic d0= 0 /1 / 4,F0= 1 E2 not active
active ON external alarm automatic [A4 = 1] [+A7] √ √ dOr active ON open door al
active ON low temperature alarm automatic [AL] [Ad] √ HI active ONhigh temperatu
not active ON unit parameter error not possible not active ON operating paramete
Probe S2 fault OFF OFF automatic unchanged unchanged unchanged changed un- YES N
Probe S3 fault OFF OFF automatic unchanged unchanged unchanged changed YES NO ch
Serial probe S11 OFF OFF automatic duty seting (c4)unchanged unchanged un- YES N
Serial probe S12 not updated OFF OFF automatic duty setting (c4) unchanged uncha
Serial probe S13 not updated OFF OFF automatic duty setting (c4) unchanged uncha
Serial probe S14 OFF OFF automatic duty setting (c4)unchanged unchanged un- YES
High temperature A ON ON automatic unchanged unchanged unchanged un- YES NO LO2
(rated current not reached) DRAIN ALARM E5 3 FILL ALARM 卡 MAINTENANCE WARNING (p
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