Trane UCM-CLD - Diagnostic Codes - Faults 1 AA to 1 dd

Diagnostics
19RLC-SVU02F-E4
Default description
Displayed Code Type Description
Fault 1AA
EXV Elec Drtive Ckt - Rfgt Ckt 2 : CMR 1) EXV wiring
2) Defective UCM
3) Defective EXV
4) Defective EXV relay
Fault 1Ad
Memory Error Type I : IFW
Fault 1AE
Low Differential Pressure - Ckt 1 : CMR - Delta P< 2,8bar during more than 2 min.
Fault 1AF
Low Differential pressure - Ckt 2 : CMR - Delta P< 2,8bar during more than 2 min.
Fault 1b2
Severe Phase Unbalance - Cprsr A : CMR
Fault 1b3
Severe Phase Unbalance - Cprsr B : CMR
Fault 1b4
Severe Phase Unbalance - Cprsr C : CMR
Fault 1b5
Severe Phase Unbalance - Cprsr D : CMR
Fault 1b6
Compressor Overload Setting - Cprsr A : IFW - Check setting of compressor overload
Fault 1b7
Compressor Overload Setting - Cprsr B : IFW - Check setting of compressor overload
Fault 1b8
Compressor Overload Setting - Cprsr C : IFW - Check setting of compressor overload
Fault 1b9
Compressor Overload Setting - Cprsr D : IFW - Check setting of compressor overload
Fault 1bA
Phase Unbalance - Cprsr A : CMR - Phase imbalance >15%
Fault 1bb
Phase Unbalance - Cprsr B : CMR - Phase imbalance >15%
Fault 1bC
Phase Unbalance - Cprsr C : CMR - Phase imbalance >15%
Fault 1bd
Phase Unbalance - Cprsr D : CMR - Phase imbalance >15%
Fault 1bE
Winding Temp - Cprsr A : CMR - Winding temperature > 105°C
Fault 1bF
Winding Temp - Cprsr B : CMR - Winding temperature > 105°C
Fault 1C0
Winding Temp - Cprsr C : CMR - Winding temperature > 105°C
Fault 1C1
Winding Temp - Cprsr D : CMR - Winding temperature > 105°C
Fault 1C6
High Differential Pressure - Ckt 1 : CMR - LB/HP pressure differential > 24,5 bar
Fault 1C7
High Differential Pressure - Ckt 2 : CMR - LB/HP pressure differential > 24,5 bar
Fault 1d1
Memory Error Type II : IFW - RAM error
Fault 1d2
Memory Error Type III : IFW - RAM error
Fault 1d3
Cprsr Suction Temp Sensor - Ckt 1 : CMR - Defective sensor
Fault 1d4
Cprsr Suction Temp Sensor - Ckt 2 : CMR - Defective sensor
Fault 1d7
Phase Reversal Prot Lost - Cprsr A : CMR - Phase reversal protection not operative
Fault 1d8
Phase Reversal Prot Lost - Cprsr B : CMR - Phase reversal protection not operative
Fault 1d9
Phase Reversal Prot Lost - Cprsr C : CMR - Phase reversal protection not operative
Fault 1dA
Phase Reversal Prot Lost - Cprsr D : CMR - Phase reversal protection not operative
Fault 1db
Slaved EXV Elec Drive Ckt - Rfgt Ckt 1 : CMR - EXV electric drive defective
Fault 1dC
Slaved EXV Elec Drive Ckt - Rfgt Ckt 2 : CMR - EXV electric drive defective
Fault 1dd
High Oil Temp - Cprsr A : CMR - Oil temperature > 77°C
- Phase imbalance >30%, check current transformer
and unit power supply
- Phase imbalance >30%, check current transformer
and unit power supply
- Phase imbalance >30%, check current transformer
and unit power supply
- Phase imbalance >30%, check current transformer
and unit power supply
- NOVRAM problem, unit is placed on default
setting operating