Turbo Air SMART 7 STI022LR404A2, Руководство по установке и эксплуатации

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System troubleshooting.
Symptoms Possible causes Solution
Compressor not running
Main switch open Close switch
Blown fuse
Check electrical circuits and motor winding for shorts or grounds.
Replace fuse after fault is corrected.
Loose wiring Check all wire junctions. Tighten all terminal screws.
System cable shut down Replace shutdown cable.
Thermal overload tripped
Overloads are automatically reset. Check unit when unit come back on
line.
Defective contactor or contactor coil Replace or repair
System shut down by safety devices. Check cause of shut down
No cooling required. Wait until calls for cooling
Motor electrical trouble. Check motor for open windings, short circuit or burn out.
Noisy Compressor
Flooding of liquid refrigerant into crankcase Check expansion valve setting
Worn compressor. Replace compressor
High discharge pressure.
Non-condensable in system. Remove non-condensable.
Too much refrigerant Remove excess refrigerant
Fan not running Check electrical circuit and fuse.
Dirty condenser coil Clean condenser coil
Liquid line solenoid not open Repair or replace coil
Low discharge pressure.
Insufficient refrigerant Check leaks. Add charge.
Low suction pressure See corrective steps for low suction pressure.
High suction pressure
Excessive loads Reduce load.
Expansion valve overfeeding. Check bulb location and clamping. Adjust superheat..
Low suction pressure.
Expansion valve malfunctioning. Check and reset for proper superheat.
Lack of refrigerant. Check for leaks. Add charge.
Evaporator dirty or iced. Clean. Check defrost parameters and modify as required.
Compressor thermal
protector switch open.
Evaporator dirty or iced Clean and defrost.
Condenser coil dirty. Clean coil
Too much refrigerant Remove excess refrigerant
Clogged liquid line filter drier. Replace filter drier.
Operating beyond design conditions Add facilities so that conditions are within allowable limits.
Fan(s) will not operate
Main swich open. Close switch.
Blown fuses. Replace fuses. Check for short circuits or overload conditions.
Defective motor Replace motor.
Coil does not get cold enough to reset thermostat. Adjust fan delay setting of control.
Controller or sensor defective. Replace defective component.
Unit in defrost cycle. Wait for completion of cycle.
Room temperature too
high.
Controller temperature set too high. Adjust control
Superheat too high. Check and reset for proper superheat
Insufficient refrigerant Check leaks. Add charge
Evaporator coil iced Manually defrost coil. Check defrost controls for malfunction.
Ice accumulating on
ceiling around grill.
Defrost duration is too long. Adjust defrost termination temperature.
Fan delay not delaying fans after defrost period. Adjust fan delay setting or replace sensor.
Defective defrost control or sensor. Replace defective component.
Too many defrost. Adjust number of defrosts.
Coil not clearing of frost
during defrost cycle.
Coil temperature not getting above freezing point
during defrost.
Check heater operation.
Not enough defrost cycles per day. Adjust control for more defrost cycles.
Defrost cycle too short. Adjust defrost control, defrost duration setting.
Defective defrost control or sensor. Replace defective component.
Ice accumulating in drain
pan.
Defective heaters. Replace heater.
Unit not installed properly (out of level) Check and adjust if necessary.
Drain line plugged. Clean drain line.
Defective control. Replace defective component.