ZL-803A, Water or Seafood Temperature Control, 30A output, Free Ship

Sale price $23.21 Regular price $41.78

ZL-803A Electronic Thermostat

  1. Feature

ZL-803A digital thermostat has cooling mode and constant temperature control mode. Also has 30 A output can drive compressor less than 3500 W. Controller adopt IP 30 level front panel protection, convenient to operate, easy to install. It can be applied to cold storage, sea food machine and other water temperature control equipment.

  1. Main Function
  • Cooling/constant temperature control
  • Intelligent/timing defrost
  • Maintenance timer
  • Compressor delay protection 
  • Quick start
  • Auto restart 
  • Temperature measurement and display
  • Temperature calibration
  • Outside alarm input
  1. Technical Specification 
  • Power supply:AC185-245V,50/60HZ
  • Temperature sensor: NTC 5K/3470 L=5000mm
  • Load current:5A/250V,30A/250V (resistive load)
  • Setting range: -9.9°C-50.0°C
  • Display range: -9.9°C-50.0°C
  • Working temperature:-10--45°C5-85%RH (no dewing)
  • Storage temperature: -30-70°C
  • Case: PC+ABS fire proof
  • Protection level: IP 30
  • Size: 120*51.5*90mm
  • Hole size: 114*45.5mm
  1. Control Function Description

 4.1 ON/OFF:  

Keep depressing "P" for 3 seconds, power on. Keep "P" depressed for 3 seconds, power off.

4.2 Cooling mode:

When temperature ≥ Set-temperature + temperature-difference, compressor has stopped for delay-protection-time, cooling start.
When temperature ≤ set-temperature, cooling stops.

4.3 constant temperature control:

When temperature ≥ set-temperature + temperature-difference, compressor has stopped for delay-protection-time, cooling starts.
When temperature ≤ set-temperature, cooling stops.
 
When temperature ≤ set-temperature – temperature-difference, compressor has stopped for delay-protection time, heating starts.
When temperature ≥ set-temperature, heating stops.

4.4 Defrost control:

Intelligent defrost
When coil temperature ≤ defrost start temperature(F05) and meet defrost start time(F12), enter defrost control.
When coil temperature ≥ defrost end temperature(F06), or defrost time ≥ Max defrost time(F07), it will quit defrost, delay 60 seconds enter heating control again.
Timing defrost control
If defrost sensor is disconnected or failure, controller will periodically defrost. 
When compressor has been run for “F12”, it will enter timing defrost. 
Defrosting time ≥ Max defrost time(F07), it will quit defrost, delay 60 seconds enter heating control again.
Force Defrost
On heating mode, press "UP" and "DOWN" for 6 seconds will enter force defrost, the heating and cooling LED keep blinking. If coil temperature ≥ Defrost end temperature(F06), will not start defrost.
When coil temperature ≥ Defrost end temperature(F06) or Defrost time ≥ max defrost time(F07), it will quit defrost delay 60 seconds to enter heating control again. 
Once enter force defrost mode, controller must work a whole cycle of defrost than defrost will stop.

4.5 quick start:

 Keep "P" and "S" depressed for 6 seconds, it will enter into the quick start state. Cooling LED and heating LED will be on.
Enter quick start mode, working under (F08) mode, it will automatically exit this state after 90 seconds. 
In the quick start state, press "P" and "S"  for 6 seconds, it will exit this state. 

4.6 Maintenance State Instruction:

When the controller has worked for the time equals to F13, it will enter into Maintenance state. Four LED blinking, buzzer sounds continually, digital shows room temperature and all relay outputs close.
Press "P" for 3 seconds, then press  "UP" and "DOWN" at the same time, buzzer sounds, controller exits the maintenance state and enters into OFF state. The maintenance timer will be reset to zero, and recounts the working time again.

4.7  Outside alarm input(S1):

F10 = 0, outside alarm input off.
F10 = 1, When S1 input short circuit, short circuit time≥F11, all output will off, buzzer sounds display E3.
F10 = 2, When S1 input open circuit, open circuit time≥F11, all output will off, buzzer sounds display E3.
4.8 Sensor fault instruction:
When sensor short circuit, turn off all output, display E1
When defrost sensor short circuit, controller working at timing defrost mode, coil temperature display E2.

4.9 Auto restart function:

Controller is power off. When the power is back, it will return the state before off.

4.10 Restore to the Default Parameters:

Keep "P" and "S" ,"UP" and "DOWN" keys depressed simultaneously for 6 seconds, the system auto restores the default parameters, and buzzer sounds.