RHOSS TCAEBY 269 Mode D'emploi page 90

EN
PROBLEM
Compressor runs continuously
Excessive thermal load:
Working set point too low:
Filter obstructed (appears frosted):
Control board faulty:
Irregular operation of the expansion valve:
Irregular working of the contactors:
Low oil level
Leak in the refrigerant circuit:
The crankcase resistance is off:
Unit running is anomalous conditions:
The crankcase resistance does not work (with compressor off)
Lack of electrical power supply:
The crankcase resistance is off:
High delivery pressure in nominal conditions
Excessive refrigerant charge:
Irregular working of fan speed regulator
(if mounted):
Low delivery pressure in nominal conditions
Presence of air in the water system:
Mechanical problems in the compressor:
Irregular working of fan speed regulator
(if mounted):
High intake pressure in nominal conditions
Excessive thermal load:
Irregular operation of the expansion valve:
Mechanical problems in the compressor:
Low intake pressure in nominal conditions
Dirty/damaged heat exchanger:
Filter partially clogged:
Irregular operation of the expansion valve:
Presence of air in the water system:
Irregular working of fan speed regulator
(if mounted):
Section II :: Installation and maintenance
RECOMMENDED ACTION
check system sizing and insulation.
check calibration and reset.
replace.
replace board and check it.
replace.
check operation.
check, identify and eliminate leak; restore correct oil and refrigerant charge.
check and replace if necessary.
check unit dimensioning.
check connections and auxiliary fuses.
check and replace if necessary.
check fans, check clearances around unit and possible coil obstructions.
drain the excess.
check calibration and adjust as necessary.
bleed the system.
check and adjust as necessary.
overhaul compressor.
check calibration and adjust as necessary.
check system sizing, leaks and insulation.
check operation, and replace if necessary.
overhaul compressor.
verify, proceed with washing if dirty.
check operation, and replace if necessary.
bleed the system.
check and adjust as necessary.
check calibration and adjust as necessary.
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