3. Rapid Restoration of Factory Settings
In the case of power-on normal display, non-setting, press and hold ▲▼ key at the same time, the thermostat will be
powered on, and "rE" will be displayed after 3 seconds, and all the set values will be restored to the factory values, and then
resume normal working condition after another three seconds.
4. Check the Room Temperature
In a non-setting state, press ▼a key to display the room temperature sensor detection value, after 6 seconds resume
displaying the water temperature (at this time Room temperature light is on, indicating that the upper window is displaying
room temperature).
5. Quick Adjustment
Press the SET key when the thermostat is working normally if the thermostat is working in constant temperature mode, the
panel displays the parameter value of F0 (set temperature) and the intelligent mode display F1 (temperature difference value)
parameter value (at this time the panel PARAM set light is on, indicating that the controller is now in parameter setting state).
At this time, press ▲▼ a key to modify the set value, and then press SET key to exit If no key is pressed within 20 seconds,
then it will not save the disk to exit. If you press key, it will save the disk and exit, and the new parameter will take effect.
Ⅵ. The Control Output Function
1 Refrigeration Control
Chiller Working Condition
Compressor
Working Condition
Condition of
Refrigerant
Solenoid Valve
Condition of the
Heating Rod
First-stage micro-refrigeration
Second-stage
micro-refrigeration
20% power cooling Heating
pad working
The above are the four working states of the chiller controlled by the intelligent temperature controller. Refrigeration and
micro-cooling state conversion time is the shortest, (about 5-10 seconds) and can be converted several times in one minute. If
the thermal load is turned on, the chiller mainly works in these two working conditions, which can precisely control the
temperature of the cooling water. (The actual test water temperature fluctuations of about 0.3 degrees or so). When the
thermal load is off, the water temperature will overshoot downward, and the refrigeration compressor will stop working when
it reaches the A0 set value.
Need to pay special attention to is; chiller condition conversion and water temperature changes between there will be a time
difference, the parameter A6 is to describe the system inertia of the relevant parameters, according to this parameter, the
controller can calculate the corresponding action in advance, reduce the water temperature overshoot.
Refrigeration Compressor: When the temperature rises to the water temperature set value + refrigeration return difference,
and the compressor protection delay over the set time, the compressor starts to work. The compressor stops working when the
temperature drops to the water temperature setting value - heating return difference.
Refrigerant Solenoid Valve:
(1). The compressor works, when the temperature drops to (equal to, below) the water temperature set value, and the
refrigerant solenoid valve cut-off duration has been greater than the time set by the state transition delay (A3), the refrigerant
solenoid valve on. When the temperature rises to (higher than) the water temperature setting value or above, and the duration
of the refrigerant solenoid valve is greater than the time set by the state transition delay (A3), the refrigerant solenoid valve
cuts off.
(2). When the compressor stops running, the refrigerant solenoid valve is on.
(3). When the compressor starts to work (startup), the refrigerant solenoid valve must be in the cut-off state (under normal
circumstances, this condition is satisfied).
Electric Heating Rod: When the water temperature decreases to below the water temperature setting value —electric
heating rod control return difference, the electric heating rod starts to work. When the water temperature rises above the water
temperature setting value - electric heating rod control return difference, the electric heating rod stops working.
2 Water Temperature Setting Value
When the thermostat operates in the constant temperature mode, the water temperature setting value is constant at F0,
just like an ordinary thermostat.
When the thermostat works in intelligent mode, the water temperature set value is variable as follows:
When the room temperature plus F1 is less than F9, the water temperature set value is equal to F9.
When the room temperature plus F1 is greater than F8, the water temperature setpoint is equal to F8.
When room temperature plus F1 is less than or equal to F8, or greater than or equal to F9, the water temperature set value
is equal to room temperature + F1.
3 Alarm Output
(1) Alarm Display
