Whether the digital thermostat is working properly
Q: Digital thermostat is not displayed after power is turned on?
A: 1, check the digital thermostat power supply is connected.
2, check the digital thermostat power switch is playing in the open position (only mosaic and BWD3K series digital thermostat only power switch).
3, check the digital thermostat supply voltage is within the allowable voltage range (220VAC ± 20% = 175 ~ 265VAC).
Q: Is the digital thermostat properly installed?
A: When we installed digital thermostat equipment, Need to test the digital thermostat is working properly,
The simpler method is as follows: Connect the power cord, sensor cable and fan cable to the digital thermostat,
Power observation: If the three-phase temperature display is basically balanced, No fault alarm at the same time over-temperature alarm indicator and trip light is off, Press the freezer panel "manual / automatic" button. If the fan indicator light is on, At this point the fan should start, then press the "manual / automatic" button. Fan indicator light off, At this time the fan stops rotating, Can basically judge the digital thermostat is working properly.
Q: Press the freezer panel "Manual / Auto" button, Cooling fan indicator light, Why does not the cooling fan start?
A: 1, check the fan wiring is correct or loose.
2, should check the digital thermostat rear panel fuse is intact.
3, check the digital thermostat fan terminal is active or passive(Active: refers to the fan terminal in the start of the fan can output 220VAC / 10A voltage, Cooling fan can be directly connected to the terminal;Passive:Refers to the fan terminal is equivalent to a switch, The fan must be connected to the power supply connected to the terminal to start the fan).
4, check the cooling fan is faulty(Through the multimeter to check the DC resistance of each fan is to be normal to judge).
Q: After starting the cooling fan manually, Can not manually turn off the cooling fan?
A: At this time the measured temperature is higher than the fan automatically start and stop the temperature range, Is a normal phenomenon.
Q: digital thermostat installation and commissioning, After power on the digital thermostat constantly reset, Cooling fan can not start?
A: digital thermostat installation and commissioning, Most of the use of room standby power supply, The voltage is usually low. At this point with a multimeter to measure the digital thermostat supply voltage, Most of the supply voltage is less than 175VAC or less, As the digital thermostat internal design of low voltage detection and undervoltage protection device, (Which can effectively protect the digital thermostat and fan in the undervoltage condition is not damaged and specially designed) Is a normal phenomenon. After the digital thermostat is properly installed, Power supply by the dry-type transformer through the low-voltage distribution cabinet, The room voltage are ≥ 220VAC, Digital thermostat can work properly.
Encounter the above phenomenon, Should first determine whether the digital thermostat supply voltage in the normal operating voltage range (175V ~ 265VAC). If the supply voltage is too low, Can be in the normal voltage test digital thermostat working state, If everything is normal, Do not worry about the future work of digital thermostat, Can be assured use.
A: 1, check the digital thermostat power supply is connected.
2, check the digital thermostat power switch is playing in the open position (only mosaic and BWD3K series digital thermostat only power switch).
3, check the digital thermostat supply voltage is within the allowable voltage range (220VAC ± 20% = 175 ~ 265VAC).
Q: Is the digital thermostat properly installed?
A: When we installed digital thermostat equipment, Need to test the digital thermostat is working properly,
The simpler method is as follows: Connect the power cord, sensor cable and fan cable to the digital thermostat,
Power observation: If the three-phase temperature display is basically balanced, No fault alarm at the same time over-temperature alarm indicator and trip light is off, Press the freezer panel "manual / automatic" button. If the fan indicator light is on, At this point the fan should start, then press the "manual / automatic" button. Fan indicator light off, At this time the fan stops rotating, Can basically judge the digital thermostat is working properly.
Q: Press the freezer panel "Manual / Auto" button, Cooling fan indicator light, Why does not the cooling fan start?
A: 1, check the fan wiring is correct or loose.
2, should check the digital thermostat rear panel fuse is intact.
3, check the digital thermostat fan terminal is active or passive(Active: refers to the fan terminal in the start of the fan can output 220VAC / 10A voltage, Cooling fan can be directly connected to the terminal;Passive:Refers to the fan terminal is equivalent to a switch, The fan must be connected to the power supply connected to the terminal to start the fan).
4, check the cooling fan is faulty(Through the multimeter to check the DC resistance of each fan is to be normal to judge).
Q: After starting the cooling fan manually, Can not manually turn off the cooling fan?
A: At this time the measured temperature is higher than the fan automatically start and stop the temperature range, Is a normal phenomenon.
Q: digital thermostat installation and commissioning, After power on the digital thermostat constantly reset, Cooling fan can not start?
A: digital thermostat installation and commissioning, Most of the use of room standby power supply, The voltage is usually low. At this point with a multimeter to measure the digital thermostat supply voltage, Most of the supply voltage is less than 175VAC or less, As the digital thermostat internal design of low voltage detection and undervoltage protection device, (Which can effectively protect the digital thermostat and fan in the undervoltage condition is not damaged and specially designed) Is a normal phenomenon. After the digital thermostat is properly installed, Power supply by the dry-type transformer through the low-voltage distribution cabinet, The room voltage are ≥ 220VAC, Digital thermostat can work properly.
Encounter the above phenomenon, Should first determine whether the digital thermostat supply voltage in the normal operating voltage range (175V ~ 265VAC). If the supply voltage is too low, Can be in the normal voltage test digital thermostat working state, If everything is normal, Do not worry about the future work of digital thermostat, Can be assured use.
