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AE5881/AE5882/AE5883
33
3 Failure in operation
4 Adverse situation after startup
Symptom
Cause
Troubleshooting
Power supply not available
Blown fuse or tripped residual current circuit
breaker
Check the power supply for phase loss, short
circuit; check the fuse or residual current
circuit breaker
Broken wire
Locate the broken wire and repair it
The power supply is available but startup
is impossible
Abnormal voltage or too long power cable
(voltage drop)
Refer to the rated voltage indicated on the
nameplate
Faulty switch
Replace the switch
Faulty contactor
Replace the contactor
Overloaded relay
Replace the relay
Faulty capacitor
Replace the capacitor
Faulty starter relay
Replace the starter relay
Faulty high/low pressure switch
Replace the high/low pressure switch
Faulty temperature switch
Replace the temperature switch
Faulty compressor
Replace the compressor
The switches are all normal but startup
is impossible
The tripped high/low pressure switch is not
reset
Locate the cause of trip, and then reset the
switch
The tripped electromagnetic switch O.L is not
reset
Locate the cause of trip, and then reset the
switch
The oil pressure switch is not reset
Locate the cause, and then reset the switch
Error in temperature switch setting
Reset or replace the temperature switch
Faulty compressor
Replace the compressor
Symptom
Cause
Troubleshooting
Abnormal voltage
Shortly after startup, the wire is short-circuited
to produce the smell of burning
Check the voltage and circuit
The tripped high-pressure switch has
been reset but startup is impossible
Faulty pressure switch
Replace the pressure switch
Faulty fan
Replace the fan motor with a new one
Overload trip
Locate the cause or check the relay
Condenser dirt
Cleaning
Too much refrigerant
Properly reduce the refrigerant
Too high ambient temperature
Improve the ambient temperature or choose a
well ventilated area
Expansion valve blocked or closed
Replace the expansion valve
Dryer filter blocked
Replace the dryer filter
Tripped overload relay
Faulty starter relay
Replace the starter relay
Faulty capacitor
Replace the capacitor with a new one
Pressure Switch
Replace the pressure switch
Compressor overload
Overload the dryer and reduce air volume
Too high temperature at the dryer inlet
Install a pre-cooler
Too high ambient temperature
Improve the ambient temperature or choose a
well ventilated area
The set current value of relay is too low
Adjust the current value
Poor contact of relay
Replace the relay
Phase loss of power supply
Locate the cause of phase loss of power
supply
Contactor failure or poor contact
Replace the contactor
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AE5881-5883八国语言-200621.indd 33
AE5881-5883八国语言-200621.indd 33
2020/6/23 19:41:20
2020/6/23 19:41:20