1. Introduktion
The LILYTECH ZL-7835A is a multifunctional automatic incubator controller designed for precise temperature and humidity regulation. It offers optional PID and on/off temperature control, with an internal control resolution of 0.01℃ for optimal results. Equipped with auxiliary outputs, this controller can manage various applications such as incubators, climate rooms, and warehouses.
Note: The detailed operational instructions provided in this manual are primarily based on the ZL-7802D model, which shares many similarities with the ZL-7835A. Users are advised to consult the specific ZL-7835A manual if available for precise model-specific details.

For a complete and detailed manual, please refer to the official PDF document for the ZL-7802D model, which can be accessed at: https://manuals.plus/m/9e79d807b4fb0a6aee9c13b683c8ba2d95c3fcd14e6de5fa7be439f7243e0852
2. Specifikationer
| Feature | Beskrivelse |
|---|---|
| Modelnummer | ZL-7835A |
| Mærkenavn | LILYTECH |
| Teori | Temperaturregulator |
| Display Type | DIGITALT |
| Strømtype | Charger (100-240VAC, 50/60Hz) |
| Certificering | CE |
| Temperatursensor | NTC, R25℃ = 10K B25/50℃ = 3470K |
| Temperaturindstillingsområde | -40.0 ~ 99.9 ℃ |
| Fugtindstillingsområde | 10.0 ~ 90.0% RH |
| Maks. måletemperatur | 100°C - 119°C |
| Temperatur output | Integrated SSR, R5, 5A, 250Vac (resistance load); External SSR, (Y+, Y-), 4~2mA, 12Vdc |
| Humidity Output R2 | 10A, 250Vac (resistance load) |
| Udgang R1 | 7A, 250Vac (resistance load) |
| Output R3/R4 | 3A, 250Vac (resistance load) |
| Arbejdsmiljø | -10 ~ 45℃, 5 ~ 85%RH without dew |
| Beskyttelsesniveau | IP65 (kun frontpanel) |
| Case Dimension | L78 x B34.5 x D71 (mm) |
| Borestørrelse | L 71 x W29 (mm) |
| Skærmstørrelse | 1.9 tommer og derunder |

3. Installation
- Insert the controller into the prepared hole.
- Slide the bracket to fix the device (step two).

4. Ledningsdiagram
Refer to the diagram below for proper wiring connections. Ensure all connections are secure and correct before applying power.

- R1: Humi - 10A250Vac
- R2: Fan - 3A250Vac
- R3: Heater - 5A250Vac
- Humi. Sensor - Humidity sensor input
- Temp. Sensor - Temperature sensor input
- STRØMFORSYNING - N (Neutral), L (Live) for 100~240Vac
- SIKRING - R3 (Heater) circuit fuse
- KOM - Common terminal for R1, R2, R3
5. Betjening
5.1 Set Setpoints
- Tryk og hold på S button for 3 seconds. The display will show the temperature setpoint ("t" + "setpoint").
- Trykke S again to switch between temperature set status and humidity set status ("H" + "setpoint").
- Brug ▲ or ▼ buttons to adjust the setpoint. Holding the button will change the value faster.
- Tryk og hold på S button for 3 seconds to save the settings and exit.
If there is no key operation for 30 seconds, the setting status will exit, and changes will not be saved. Factory default setpoints are 38.0°C and 60.0%RH.
5.2 Set Parameters
- Tryk og hold på P button for 3 seconds. The display will show "PSd" + "0".
- If the password is "000", no password is needed. Otherwise, use ▲ or ▼ to set the correct password and press S for at bekræfte.
- After entering the parameter setting status, use S or P to select the parameter code (refer to the Parameter Code Table below).
- Bruge ▲ or ▼ to set the value of the parameter.
- Tryk og hold på P button for 3 seconds to save the settings and exit.
If there is no key operation for 30 seconds, the setting status will exit, and changes will not be saved.
5.3 Parameter Code Table (Partial)
| Kode | Fungere | Rækkevidde | Bemærkning | Fabrikssæt |
|---|---|---|---|---|
| U10 | Temperature setpoint up limit | U11 ~ 99.9℃ | 99.9 ℃ | |
| U11 | Temperature setpoint low limit | -40.0 ~ U10 | -40.0℃ | |
| U12 | Temperaturkontroltilstand | 0 ~ 1 | 0: PID, 1: on/off control | 0 |
| U13 | Temperatur hysterese | 0.0 ~ 20.0 ℃ | Only effective when U12 = 1 | 0.2 ℃ |
| U14 | Temperature sensor calibration value | -20.0 ~ 20.0 ℃ | 0.0 ℃ | |
| U15 | High temp. protection start point | U16 ~ 10.0℃ | Relative value, real value = setpoint + U15 | 0.5 |
| U16 | High temp. protection stop point | -40.0 ~ U15 | Relative value, real value = setpoint + U16 | 0.3 |
| U17 | High temperature warning point (relative) | 0.0 ~ 99.9 ℃ | Absolute high temperature warning point: SP + U17; 0: Disable | 2 |
| U18 | Low temperature warning point (relative) | 0.0 ~ 99.9 ℃ | Absolute low temperature warning point: SP - U18; 0: Disable | 0 |
| U20 | Fugthysterese | 0.1 ~ 20 % | 2 | |
| U21 | R1 forsinkelsesbeskyttelsestid | 2 ~ 300 sek | 5 | |
| U22 | Fugt kalibrering | -20.0 ~ 20.0% | 0 | |
| U23 | High humidity protection start point | U24 ~ 20.0% | Relative value, real value = setpoint + U23 | 5 |
| U46 | Udgang R1 arbejdstilstand | 0 ~ 3 | 0: Timer output, 1: High temp/humi protection, 2: Timer output + High temp/humi protection, 3: Disable | 2 |
| U73 | Temperaturkontroltilstand | 0 ~ 1 | 0: PID, 1: on/off control | 0 |
| P | Proportion parameter: Kp | 0.1 ~ 9999 | 2.6 | |
| I | Integration parameter: Ti | 0 ~ 9999 | 500 | |
| d | Differential parameter: Td | 0 ~ 9999 | 50 | |
| U99 | Adgangskode | 000 ~ 999 | 000: deaktiver adgangskode | 000 |
*This table is a partial list. Refer to the full PDF manual for all parameter codes.
5.4 Kontrolfunktioner
- Timer Output R1: Energized/de-energized based on U41 (on time) and U43 (off time).
- Temperaturkontrol:
- PID kontrol: When U73 = 0.
- TÆND/SLUK -kontrol: When U73 = 1, uses hysteresis control. R5 and external SSR energize/de-energize based on room temperature relative to setpoint and hysteresis (U16).
- Beskyttelse mod høj temperatur: If room temperature exceeds setpoint + U12, R1 energizes. If it falls below setpoint + U13, R1 de-energizes.
- Høj/lav temperatur alarm: Alarms (displaying "tHi" or "tLo") if room temperature exceeds setpoint + U15 or falls below setpoint - U14.
- Fugtkontrol: R2 energizes/de-energizes based on room humidity relative to setpoint and hysteresis (U50), considering R2 delay protection time (U51).
- High Humidity Protection: Similar to high temperature protection, R1 energizes/de-energizes based on room humidity relative to setpoint + U53 and setpoint + U54.
- High/Low Humidity Alarm: Alarms (displaying "HHi" or "HLo") if room humidity exceeds setpoint + U56 or falls below setpoint - U55.
- Egg Turning Control: R3/R4 are universal timer outputs designed for egg turning.
- Timer funktion: R3 energizes for left turn (U62), R4 energizes for right turn (U64).
- Full Egg Turn: One left turn + one right turn. The counter tracks full egg turns.
- Manual Egg Turning: Trykker ▲ starts right turning, pressing ▼ starts left turning.
- Egg Turn Counter Reset: Can be reset manually (S + ▼ for 5s) or automatically after power supplied (U66).
- Incubated Days: The controller counts incubated days. The day counter stops when it reaches the maximum set (U69). Can be reset manually (S + ▲ for 5s) or automatically after power supplied (U68).
- External Digital Input (DI): Configurable via U70 for different alarming modes (disabled, alarm if short, alarm if open).
- Buzzer Alarming: Activates for failures or effective DI input (if U71 = 1). Press P to stop beeping.
- Sensorkalibrering: Temperature (U30) and Humidity (U52) sensors can be calibrated.
- Gendan til fabriksindstilling: Tryk og hold P og ▲ simultaneously for 3 seconds until "UnL" displays. Then press ▼ 3 times to restore all parameters to factory settings.
6. PID Auto Tuning (AT)
Auto tuning helps optimize PID parameters for precise temperature control. Follow these steps:
- Set the Heater power during PID auto tuning (U74). The factory default is 50%.
- Set the desired temperature setpoint (SP) for auto tuning.
- Tryk og hold ▲ og ▼ simultaneously for 5 seconds. The U74 value will display, and "AT" will blink.
- Trykke P to start auto tuning.
During AT, the room temperature (PV) will fluctuate around the setpoint several times. The controller will calculate new PID parameters, and the "AT" display will turn off.
- If AT fails, a reason will be displayed (e.g., "At1", "At2", "At3", "At4").
- If AT is successful, "SUc" will display. Press any key to clear "SUc" and start PID control.
- If AT never succeeds or fails, ensure sufficient heater power.
- If AT lasts 180 minutes without finishing, it will stop and display "At4".

7. Fejlfinding
| Vise | Remark / Solution |
|---|---|
| E1 | NTC sensor failure. Check sensor connection or replace sensor. |
| E2 | Humidity sensor failure. Check sensor connection or replace sensor. |
| hej | High temperature warning. Check ventilation, setpoint, and cooling system. |
| tLo | Low temperature warning. Check heating system, setpoint, and insulation. |
| HHi | High humidity warning. Check ventilation, setpoint, and dehumidification. |
| HLo | Low humidity warning. Check humidification system, setpoint, and sealing. |
| Klokken 1 | PID auto tuning fails (Temperature interference during tuning). Minimize external disturbances. |
| Klokken 2 | PID auto tuning fails (Amplitude of temperature oscillation is abnormal). Adjust heater power or check system stability. |
| Klokken 3 | PID auto tuning fails (Periods of temperature oscillation is abnormal). Check system response. |
| Klokken 4 | PID auto tuning fails (Time out). Ensure sufficient heater power and proper setup. |
| SUc | PID auto tuning success. |
| UnL | Gendan til fabriksindstillinger. |
8. Brugertips
- Regelmæssig rengøring: Periodically clean temperature and humidity sensors to ensure accurate readings. Dust or debris can affect performance.
- Ventilation: Ensure adequate ventilation in the incubator or controlled environment to prevent hot spots and maintain stable conditions.
- Testkørsel: Before placing valuable items (e.g., eggs) in the incubator, perform a test run for at least 24-48 hours to verify that temperature and humidity settings are stable and accurate.
- Kraftstabilitet: Use a stable power source. Fluctuations can affect the controller's performance and longevity.
- Sensorplacering: Place sensors away from direct heat sources or humidifiers to get a true reading of the ambient conditions.
9. Warning & Attention
- Strømafbrydelse: Always disconnect power before performing any wiring or maintenance on the controller.
- Professional Wiring: Electrical wiring must be performed by a certified electrician to prevent damage to the device or personal injury.
- Korrekte forbindelser: Connect according to the electrical wiring diagram. Incorrect wiring will damage the device.
- Sensor & Power Bundles: Do not route the sensor bundle together with the power supply bundle to avoid interference.
- Miljø: Avoid operating the device in erosive, wet, or strong electrical-magnetic field environments.
- Heater Power Rate: If the temperature heater power rate is high, or if using inductive loads (e.g., coil-wired heaters), use an external SSR-DA instead of the integrated SSR.
- Other Loads: For large or capacitive/inductive loads (e.g., many humidifiers), it is advisable to use an intermediate relay, SSR-AA, or magnetic contactor.
- Overload Damage: Damage due to overload is not covered under warranty.
10. Garanti og support
This device has been thoroughly checked before shipment. The warranty period is one year from the date of purchase. The warranty does not cover damage caused by improper usage, such as incorrect wiring or other user-induced errors.
For further assistance or detailed technical support, please refer to the comprehensive PDF manual for the ZL-7802D (linked in the Introduction) or contact LILYTECH customer support.





