RHOSS H57603 Instrucciones De Uso página 75

II.7 Troubleshooting
Problem:
1 – THE CIRCULATION PUMP DOES NOT START (IF CONNECTED):
• Lac k of voltage to the pump unit:
• No signal from control board:
• Pump bloc ked:
• Pump motor malfunction:
• Pump s peed s witch fault:
• Wor king set-point r eached:
2 - THE COMPRESSOR DOES NOT ST ART:
• Microprocessor board alar m:
• Absence of voltage, manoeuvr e s witch open:
• Compress or circuit breaker protec tion acti vated:
• Fuse inter vention due to overload:
• No request for cooling with us er s ystem s et point correct:
• Wor king set poi nt too high:
• Defecti ve contactors:
• Compress or elec tric motor failure:
3 –THE COMPRESSOR DOES NOT START BUT A BUZZING NOISE CAN BE HEARD:
• Incorrect power s upply voltage
• Compress or contac tors malfunctioning:
• Mechanic al problems in the compress or:
4 – THE COMPRESSOR RUNS INTERMITTENTLY:
• Faulty low pressure switc h:
• Insufficient r efrigerant load:
• Gas line filter clogged (appears fros ted):
• Irregular operation of the expansion val ve:
5 – THE COMPRESSOR STOPS:
• Bad functioni ng of the high pr essure s witc h:
• Insufficient water fl ow rate to the condens ers:
• Exc essi ve ambient temperature:
• Exc essi ve refrigerant charge:
6 – EXCESSIVE COMPRESSOR NOISE - EXCESSIVE VIBRAT IONS
• Compress or is pumping liquid, exc essi ve incr ease in refrigerant
fluid in crankcas e.
• Mechanic al problems in the compress or:
• Unit runni ng at the limit of conditi ons of use.
7 - COMPRESSOR RUNS CONTINUOUSLY
• Exc essi ve ther mal load:
• Wor king set poi nt too l ow:
• Insufficient water fl ow rate to the condens ers:
• Insufficient r efrigerant load:
• Filter obstructed (appears frosted):
• Control board faulty:
• Irregular operation of the expansion val ve:
• Irregular wor king of the contactors:
8 - COMPRESSOR PARTIALISES CONTINUOUSLY
• Wor king set poi nt too high:
• Insufficient water fl ow rate:
9 - INSUFFICIENT OIL LEVEL
• Leak in the refrigerant circuit:
• The crankcase resistance is off:
• Unit functioni ng in anomal ous c onditions:
10 - THE CRANKCASE RESIST ANCE DOES NOT W ORK (W ITH COMPRESSOR OFF)
• Lac k of el ectrical power suppl y:
• The crankcase resistance is off:
11 - HIGH FLOW PRESSURE IN NOMIN AL CONDITIONS
• Insufficient water fl ow rate to the condens ers:
• Exc essi ve refrigerant charge:
SECTION II: INST ALL ATION AND MAINTEN ANCE
Recommended action:
chec k electric connec tions and auxiliar y fus es.
chec k, c all in authorised ser vice engineer.
chec k and clear as necess ary.
repair or replace pump.
chec k, replac e component.
chec k.
identify alar m intervened.
close isolator s witch.
chec k electric circuits and motor windi ngs, identify any s hort circuits;
chec k presence of overloads in networ k and any l oos e connections .
reset the fuses ; chec k unit on s tart-up.
chec k and if necess ary wait for cooling request.
chec k s etting and r eset.
replace or repair.
chec k s hort circuit.
chec k voltage, i nvestigate causes.
replace.
overhaul compr essor.
chec k c alibration and functionality.
restore c orrect load, i dentify and eliminate any leaks.
replace.
chec k c orrect functioning and replac e, if nec essar y.
chec k c alibration and functionality.
chec k functi onality of c ondensers circuit pump.
chec k unit operation limits.
drain the excess.
chec k c orrect functioning of the expansion val ve and replace if
necess ary.
overhaul compr essor.
chec k according to stated limits.
chec k s ystem sizing, leaks and ins ulation.
chec k s etting and r eset.
chec k functi onality of c ondensers circuit pump.
restore c orrect load, i dentify and eliminate any leaks.
replace.
replace board and chec k.
replace.
chec k functi onality
chec k s etting and r eset.
chec k and adjust as necess ary.
chec k, i dentify and eliminate leak; restore correct load of refrigerant and
oil.
chec k and replac e if nec essar y.
chec k unit dimensioning.
chec k c onnections and auxiliary fuses .
chec k and replac e if nec essar y.
chec k functi onality of c ondensers circuit pump.
drain the excess.
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