RHOSS TCCEY 114 Instrucciones De Uso página 31

II.12 CHECK-LIST
1 - HIGH FLOW PRESSURE
Insufficient cooling air in air side heat exchanger:
The fan does not work:
Excessive refrigerant charge:
2 - LOW FLOW PRESSURE
Insufficient refrigerant charge:
Mechanical problems in the compressor:
3 - HIGH INTAKE PRESSURE
Excessive thermal load:
Irregular operation of the expansion valve:
Mechanical problems in the compressor:
4 - LOW INTAKE PRESSURE
Insufficient refrigerant charge:
Filter partially obstructed (appears frosted):
Irregular operation of the expansion valve:
Presence of air in the water system:
Insufficient water flow rate:
5 - COMPRESSOR: DOES NOT START
Microprocessor board alarm:
No voltage, switch open:
Overload protection triggered:
No request for cooling with user system set point correct:
Working set point too high:
Defective contactors:
Compressor electric motor failure:
6 - COMPRESSOR: BUZZING CAN BE HEARD
Incorrect power supply voltage:
Compressor contactor stuck:
Mechanical problems in the compressor:
7 - COMPRESSOR: FUNCTIONS INTERMITTENTLY
Faulty low pressure switch:
Insufficient refrigerant charge:
Refrigerant line filter clogged (appears frosted):
Irregular operation of the expansion valve:
8 - COMPRESSOR: YES STOP
Faulty high pressure switch:
Insufficient cooling air in air side heat exchanger:
Excessive ambient temperature:
Excessive refrigerant charge:
9 - COMPRESSOR: FUNCTIONS NOISILY-INTERMITTENTLY
Compressor is pumping liquid, excessive increase in refrigerant fluid in
crankcase:
Mechanical problems in the compressor:
Unit running at the limit of conditions for use:
10 - COMPRESSOR: FUNCTIONS CONTINUOUSLY
Excessive thermal load:
Work set point too low in cooling cycle (high in heating cycle):
Insufficient refrigerant charge:
Refrigerant line filter clogged (appears frosted):
Control board faulty:
Irregular operation of the expansion valve:
Compressor contactor stuck:
Poor ventilation of the coils:
11 - FAN: IT DOES NOT START, IT SWITCHES ON AND OFF
Circuit breaker protection activated:
12 - THE CIRCULATION PUMP DOES NOT START
Lack of voltage to the pump unit:
No signal from control board:
Pump blocked:
Pump motor malfunction:
Remote ON/OFF switch open (OFF position):
PROBLEM RECOMMENDED ACTION
check clearances and make sure coil is not obstructed;
check fan operation.
drain the excess.
1 - detect and eliminate any leaks;
2 - restore correct load.
replace compressor.
check system sizing, infiltrations and insulation.
check operation.
replace compressor.
1 - detect and eliminate any leaks;
2 - restore correct load.
replace filter.
check operation.
bleed the water system.
check circulation pump operation.
identify alarm and take appropriate action.
close the switch.
1-restore the switch / electronic control;
2 - check the unit at start up.
check and if necessary wait for cooling request.
check and if necessary readjust set-point.
replace contactor.
check short circuit.
check voltage, investigate causes.
replace contactor.
replace compressor.
check pressure switch calibration and operation.
1 - detect and eliminate any leaks;
2 - restore correct load.
replace filter.
check operation.
check pressure switch calibration and operation.
1 - check clearances and make sure coils are not obstructed;
2- check fan function.
check unit operation limits.
drain the excess.
1 - check operation of the expansion valve;
2 - check overheating;
3 - adjust overheating, replace the expansion valve if required.
replace compressor.
check unit functioning limits.
check system sizing, leaks and insulation.
check calibration and reset.
1 - detect and eliminate any leaks;
2 - restore correct load.
replace filter.
replace the board.
check operation.
replace contactor.
1 - check clearances and make sure coils are not obstructed;
2 - check fan function.
1- check for short-circuits;
2-replace the motor.
check electrical connections.
check
release the pump.
replace the pump.
set to ON position.
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Section II :: Installation and maintenance