Hot runner temperature control dimension repair major repair: power does not show, the fans do not start, fan to run automatically, can not be off / start the blower, can not automatically reset, display is not normal, temperature imbalance, over temperature, nocommunication, temperature alarm, no output is not normal, the problem such as on aelectric thermostat why not show, check the temperature control power is connected.

2, check the temperature control switch is in the open position ( only inlay type and BWD3K series of temperature control is a power switch ).

3, check the temperature control power supply voltage is within the allowable voltage range( 220VAC ± 20% =175 ～265VAC ).

The panel " manual / automatic fan " button, indicator light, fan, why not start?

Check whether the wiring is correct or loosening of fan.

Check the fuse panel is intact after the thermostat.

Check temperature control fan connecting terminal is active or passive ( active: windmachine terminals at the start of the fan can output 220VAC/10A voltage, fan can be directly connected to the terminal; passive: wind machine terminal corresponding to aswitch, the wind turbine shall be connected to the terminals of the external power supplyto start the fan ).

Check fan whether a fault ( through a multimeter to check each one typhoon machine DC resistance to be judged whether normal ).

Not to open the fan, temperature, fan is not automatically?

In 1, fan is manually switched on, press "automatic / manual " button to turn off the fan.

2, the system timing on-off fan function effect, is a normal phenomenon.

Manual start fan, not manually close the fan? When the measured temperature value is higher than the fan automatic start-stop temperature range, is a normal phenomenon.

Thermostat temperature control switch temperature control during installation, when electricity thermostat continually reset, fan can not start? The thermostat when installing and debugging, most of the use of computer standby power supply, voltage is usually low. At this point the multimeter is used to measure temperature of supply voltage, supply voltagelower than most 175VAC or more caused by low temperature controller, due to internal design of low voltage detection and under-voltage protection device, ( which can effectively protect the thermostat and fan in the undervoltage condition is not damaged and specially designed ), is a normal phenomenon. Temperature controller is properly installed, poweredby dry type transformer by low-voltage distribution cabinet is provided, the room voltagewas 220VAC, temperature controller can work normally. Facing this phenomenon, should firstdetermine the temperature control power supply voltage is within the normal operating voltage range ( 175V ～265VAC ). If the power supply voltage is too low, can be in a normalvoltage test temperature control working condition, if everything is normal, do not worry about temperature control after work, can be assured use.

The thermostat has a phase ( or two ). " -OP- ", the other phase of normal temperature? 1,check sensor DB9 ( female ) plug is reliable connection to the thermostat DB9 ( male ) on the table. 2, check the sensor probe appearance whether significant trauma, and replacement of the sensor cable. In the scene, if the above phenomena, can be a basic judgment issensing cable or sensor failure, or sensor connector is not connected well, the thermostatis not a problem in itself. Because the internal temperature of the hardware and software (program ) is a module for processing different channel signal, so as long as there is aphase of normal temperature, can be excluded from the basic thermostat failure, should be the focus of inspection sensor cable or replacement of the sensor cable.

The instrument shows " -OH- "? Check that the phase exceeding the measurement upper orsensor measuring circuit is the larger contact resistance, contact resistance andeliminating circuit.

The instrument shows " -OL- "? Check that the phase beyond limit of measurement or sensormeasuring circuit whether there is a short-circuit, and contact with the manufacturers.

The instrument shows " -Er- "? Check sensor measuring circuit whether there is a short-circuit, and contact with the manufacturers.

Three phase measurement temperature imbalance? Check and adjust the Pt100 thermal resistance depth position ( Note: my company's Pt100 thermal resistance is to undergo a rigorous screening and matching ) and the measuring precision is less than ± 0.3℃.

Instrument display a fixed phase temperature and maximum light? The instrument is maximumdisplay state, according to the " maximum / Tour " key to switch to the temperature display state.

Temperature alarm when the buzzer sound? 1, check the thermostat silencing button whetherin "1 " position ( only mosaic have this feature ). 2, check over-temperature alarm settingvalue is correct.

Thirteen, communication type temperature controller can communication?

1, check the temperature controller address settings are correct ( communication type thermostat default address is 1 ). There are multiple communication type temperature controller at the same time work should set a different address codes, while in the "thermostat monitoring management system" software " equipment management" in " add "address corresponding to the temperature controller name.

Check the communication cable wiring is correct ( red line, blue line of A+ B- ).

Fourteen, how to detect 4 ～ 20mA current loop controller from 4 to 20mA output is normal or not? Temperature control during normal working hours, with digital multimeter DC currentfile (20mA file ) to measure current loop output cable corresponding phase current, red table document connected + black table document connected -, and according to the equation: I=0.08T+4 ( I: T: mA current, temperature ) to calculate the phase current output are normal. Such as: A phase at 20 ℃red one to the black one to A + A, the current should be5.60 mA