57
ENG
Hecu CO
2
+0300085EN rel. 2.2 - 07.05.2019
Action Troubleshooting
Compressor shutdown, with speed reduction set on
Cbg54
• Check positioning, installation and correct operation of P_GC probe (positioning before the check valve at the com-
pressor discharge, checking the values are read correctly)
• Check positioning, installation and correct operation of P_ric probe; 8 operating zones outside of envelope
• Check correct compressor operation (charge, sizing, presence of liquid,..)
Parallel compressor shutdown • Check t_dis_par probe (type, wiring, installation position, probe limits, reading compared against mechanical device)
• Check alarm threshold setting on screen Hb04
Parallel compressor shutdown • Check correct compressor operation (charge, sizing, presence of liquid,..)
• Check positioning, installation and correct operation of P_GC probe (positioning before the check valve at the com-
pressor discharge, checking the values are read correctly)
• Check positioning, installation and correct operation of P_ric probe
• Metallic noise made by compressor due to lack of lubrication by the oil
Parallel compressor does not start Check the inverter model installed against the model required by the compressor in the system on screen Cbg02
Tab. 8.c
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