Goodman CONDENSING UNIT, Инструкция по установке и обслуживанию

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10
COMPLAINT PROBABLE CAUSE REMEDY
1. Excessive charge of refrigerant in system. 1. Purge or pump-down excessive charge.
2. Inadequate supply of air across the
condenser coil. 2. Make certain that coil is not fouled in any way, or that
air is not re-circulating.
3. Non-condensate gases in the system.
3. Purge these gases from the system. Recharge
system, if necessary.
1. System low on refrigerant. 1. Charge system until sight glass is clear of bubbles.
2. Compressor valves broken. 2. Replace compressor.
1. Liquid line valve closed. 1. Open the liquid line valve.
2. Restricted liquid line. 2. Replace filter-dryer.
3. The bulb of the thermal expansion valve has
lost its charge.
3. Detach the bulb from the suction line and hold in one
hand. If no liquid refrigerant goes through the valve,
replace the valve.
4. System low on refrigerant.
4. Test the unit for leaks. Add refrigerant until sight glass
is free from bubbles, after repairing leak.
5. Dirty filters. 5. Clean or replace filter.
6. Coil frosted up. 6. Defrost and clean coil. Clean or replace filters.
7. Flash gas in the liquid line. 7. Excessive liquid line drop. Check liquid line size.
8. Quantity of air through evaporator not
adequate.
8. Increase the blower speed.
1. Expansion valve stuck open. 1. Correct valve action or replace the valve.
2. Expansion valve bulb not in contact with
suction line.
2. Fasten bulb securely to suction line.
3. Suction and/or discharge valve leaking or
broken.
3. Replace compressor.
1. Disconnect switch open. 1. Close the disconnect switch.
2. Blow fuse or fuse at disconnect switch. 2. Check the cause of failure and replace the fuse.
3. Thermostat set too high. 3. Adjust to lower temperature.
4. Selector switch in "Off" position. 4. Turn selector switch knob to "Cool" position.
5. Contactor and/or relay coils burned out. 5. Replace contactor and/or relay.
6. Loose or open electrical connection in either
the control or power circuit.
6. Inspect and secure all electrical connections.
5. Compressor will not start.
TROUBLE SHOOTING ANALYSIS TABLE
1. High Head Pressure
2. Low Head Pressure
3. Low Suction Pressure
4. High Suction Pressure