Lilytech ZL-6250A Instruction Manual

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1. Feature

ZL-6250A is cooling/heating thermostat, dedicated to control the cold storage, seafood

machine, poultry production, water heaters, etc. Front panel water-proof level is IP65. The

small case size is same as those on the market.

2. Main Function

● Temperature regulation: switch between cooling and heating automatically

● Temperature display

● Temperature calibration

● Output delay protection

● Buzzer alarm output

● External warning input

● Max high-temperature or min low-temperature exceed warning.

● Sensor failure warning

3. Size Specification

1. Front panel dimension: 78* 34.5mm

2. Drilling template: 71* 29mm

3. Whole machines dimension: 78* 34.5* 71mm

4. Length of sensor(s): 3m (including the sensor probe)

4. Technical Specification

● Temperature Sensor: NTC

● Setting Range: -40～120℃

● Display Range: -40～130℃

● Working Temperature: -10～45℃

● Storage Temperature: -30～70℃

● Humidity: 5～85%RH (without dewing)

● Power Supply: AC185~245V, 50HZ

● Terminal Wire: <= 2 * 1.5mm2 or 1 * 2.5mm2

● Load Current: 7A 250Vac（Resistive load）

● Case: PC + ABS Fire Proof

● Protection Degree: IP65 (front panel)

5. Display Indication

Display Sign Description

Icon Function On Off Blinking

Temp. Set ---- ---- Setting Temp.

Cool Control In cool mode Not in cool mode

Compressor power on delaying

Heat Control In heat mode Not in heat mode

Heat output power on delaying

Repair ---- No fault Be faulty

Warning ---- No warning Be warning

On/Off Offline Online ----

Panel Digit Indication

Four red digits display the measured temperature and warning code.

No. Display Code Warning Information

1 E01

Room temperature sensor fault

( short circuit or open circuit )

2 Hi Temperature exceeds the MAX value

3 Lo Temperature exceeds the MIN value

4 EE Data access error

5 Err Password error

6 iA External warning

7 UnL Restore the default parameters

6. Keypad Operation

6. 1 Set Cool/heating Temperature

Keeping 【S】 pressed for 3 seconds to enter temperature setting mode. The temperature set

indicator is blinking, and the digital shows the set temperature. Press key 【▲】 or 【▼】
to change the set temperature ( Keeping 【▲】 or 【▼】 pressed, it will be adjusted quickly).
Press 【S】, the set temperature will be saved and leave the setting mode. Or do not press any

keys for 30 seconds; the device will leave the set mode without saving the set data.

6. 2 Set System Parameters

Enter Into System Parameter Setting Mode

Use the password to enter into the parameter setting mode, the factory password is “1111”.

Keep 【P】 pressed for 3 seconds to enter the mode. The digital displays 『---0』, then press
【▼】 to the digit of the password, press 【▲】 to the value of the digit(0-9), press 【S】