International comfort products PHN524, Руководство по установке

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Table 8—Troubleshooting Chart
SYMPTOM CAUSE REMEDY
Compressor and condenser fan will
not start.
Power failure Call power company
Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker
Defective contactor, transformer, or high--
pressure, loss--of--charge or low--pressure
switch
Replace component
Insufficient line voltage Determine cause and correct
Incorrect or faulty wiring
Check wiring diagram and rewire cor-
rectly
Thermostat setting too high
Lower thermostat setting below room
temperature
Compressor will not start but
condenser fan runs
Faulty wiring or loose connections in com-
pressor circuit
Check wiring and repair or replace
Compressor motor burned out, seized, or Determine cause
internal overload open Replace compressor
Defective run/start capacitor, overload,
start relay
Determine cause and replace
Compressor cycles (other than
normally satisfying thermostat).
Refrigerant overcharge or undercharge
Recover refrigerant, evacuate system,
and recharge to capacities shown on
rating plate
Defective compressor Replace and determine cause
Insufficient line voltage Determine cause and correct
Blocked condenser Determine cause and correct
Defective run/start capacitor, overload or
start relay
Determine cause and replace
Defective thermostat Replace thermostat
Faulty condenser--fan motor or capacitor Replace
Restriction in refrigerant system Locate restriction and remove
Compressor operates continuously
Dirty air filter Replace filter
Unit undersized for load Decrease load or increase unit size
Thermostat set too low Reset thermostat
Low refrigerant charge Locate leak, repair, and recharge
Mechanical damage in compressor Replace compressor
Air in system
Recover refrigerant, evacuate system,
and recharge
Condenser coil dirty or restricted Clean coil or remove restriction
Excessive head pressure
Dirty air filter Replace filter
Dirty condenser coil Clean coil
Refrigerant overcharged Recover excess refrigerant
Air in system
Recover refrigerant, evacuate system,
and recharge
Condenser air restricted or air short--cycl-
ing
Determine cause and correct
Head pressure too low
Low refrigerant charge Check for leaks, repair, and recharge.
Compressor IPR leaking Replace compressor
Restriction in liquid tube Remove restriction
Excessive suction pressure
High heat load Check for source and eliminate
Compressor IPR leaking Replace compressor
Refrigerant overcharged Recover excess refrigerant
Suction pressure too low
Dirty air filter Replace filter
Low refrigerant charge Check for leaks, repair and recharge
Metering device or low side restricted Remove source of restriction
Insufficient evaporator airflow
Increase air quantity
Check filter–replace if necessary
Temperature too low in conditioned area Reset thermostat
Outdoor ambient below 55
°
F (12.7
°
C) Install low--ambient kit
Filter drier restricted Replace filter