Please check the fault message on the controller for the fault status. The troubleshooting instructions are as follows: If the user knows some electrician skills, he can deal with the supplier technician and deal with it himself. If the user does not have a certain electrician foundation, please notify the first time. The factory arranges technicians to overhaul and promptly repair the high and low temperature test chambers so as to avoid causing more serious failures and make repair and repair of high and low temperature test chambers more costly.
ERROR1
CM1 compressor overcurrent protection jump
the reason
1
Phase loss, three-phase 380V voltage breaks one or two phases
2
High voltage
3
Compressor card cylinder
4
Condenser exhaust fan does not turn
Exclusion
1
Repair the three-phase circuit and check the power supply of the equipment
2
Supply 380V or increase the voltage regulator
3
Replace compressor
4
Replace condenser exhaust fan
ERROR2
CM1 compressor overpressure protection trip
the reason
1
Excessive ambient temperature
2
Condenser exhaust fan does not work, damaged
3
Refrigerant solenoid valve does not open
4
Too much refrigerant
Exclusion
1
Change the ambient temperature and keep it below 30 degrees Celsius
2
Replace condenser fan
3
Check if the solenoid valve is clogged, replace the solenoid valve
4
Drain some refrigerant (refrigerant)
ERROR3
CM2 compressor overcurrent protection jump
the reason
1
Phase loss, three-phase 380V voltage breaks one or two phases
2
High voltage
3
Compressor card cylinder
4
Condenser exhaust fan does not turn
5
The first stage compressor has too little refrigerant
Exclusion
1
Repair the three-phase circuit and check the power supply of the equipment
2
Supply 380V or increase the voltage regulator
3
Replace compressor
4
Replace condenser exhaust fan
5
Fill compressor refrigerant
ERROR4
CM2 compressor overpressure protection trip
the reason
1
Excessive ambient temperature
2
Condenser exhaust fan does not work, damaged
3
Refrigerant solenoid valve does not open
4
Too much refrigerant
Exclusion
1
Change the ambient temperature and keep it below 30 degrees Celsius
2
Replace condenser fan
3
Check if the solenoid valve is clogged, replace the solenoid valve
4
Drain some refrigerant (refrigerant)
ERROR5
Abnormal fan in the box
the reason
1
Phase loss, three-phase 380V voltage breaks one or two phases
2
High voltage
3
Damaged motor bearings
4
The motor coil has burned out
5
Thermal relay burnout
Exclusion
1
Repair three-phase circuit
2
Supply 380V or increase voltage regulator
3
Replace motor bearing
4
Repair motor coil or replace motor
5
Replacing the thermal relay
ERROR6
Cooling tower anomaly
the reason
1
High voltage
2
Damaged motor bearings
3
The motor coil has burned out
4
Thermal relay burnout
Exclusion
1
Supply AC220V voltage or increase voltage regulator
2
Replace motor bearing
3
Repair motor coil or replace motor
4
Replacing the thermal relay
ERROR7
Temperature protection in the box
the reason
1
Test box temperature exceeds the set protection temperature range
2
Overtemperature protector is damaged
3
Broken temperature sensor circuit
4
Solid state relay damage
Exclusion
1
Check the protection temperature is correct, reset the protection temperature
2
Replace over-temperature protector
3
Replace new temperature sensor to complete overhaul
4
Replace solid state relay
ERROR8
Humidification tube air protection
the reason
1
Humidity bucket no water or too low
2
Anti-dry protection protector damaged
3
Solid state relay damage
Exclusion
1
Check whether the pump is working (pumping), whether the water pipe is blocked, the water level of the storage tank is reasonable, and adjust the water level box upward so that the water completely submerges the humidifying pipe.
2
Replace anti-dry protection device
3
Replace solid state relay
ERROR9
Water tank water shortage
the reason
1
Water level in storage tank is too low
2
Water level floater bite (caught)
3
Water float damage
Exclusion
1
Supplement pure water, check whether the automatic water supply device is normal
2
Check the cleanliness of the tank and clean the storage tank
3
Replace water level float
ERROR10
Power supply phase or reverse phase
the reason
1
Total power supply phase loss (one or two phases of three phase 380V voltage)
2
Three-phase power supply (R S T) reversed
3
Phase sequence protector is damaged
Exclusion
1
Repair three-phase circuit
2
Replace the two middle fire wires of the three-phase power line with each other
3
Replace phase sequence protector
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