lbx INC-H User manual

INC-H Refrigerated Incubator
with Humidity Control
Please read the User Manual carefully before use, and follow all operating and safety instructions!
user manual
english

2
User Manual
INC-H Refrigerated Incubator with Humidity Control
Preface
Thank you for purchasing our product. Users should read this manual carefully, follow the instructions and
procedures, and be aware of all the preventive measures when using this instrument.
Service
If help is needed, you can always contact your dealer or Labbox via www.labbox.com.
Please provide the customer service representative with the following information:
▪Serial number
▪Description of the problem
▪Your contact information
Warranty
This instrument is guaranteed to be free from defects in materials and workmanship under normal use and
service for a period of 24 months from the date of invoice. The warranty is extended only to the original
purchaser and shall not apply to any product or parts that have been damaged due to improper installation,
improper connections, misuse, accident, or abnormal conditions of operation.
For claims under the warranty, please contact your supplier.

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1. Introduction
The INC-H Refrigerated Incubator with Humidity Control is the ideal testing equipment for simulating natural
environments. It comes with 30 segments of program memory and functions such as constant temperature, auto
humidity control, day/night cycle, and over-temperature protection. This equipment can be used for a wide
range of applications, including seed germination, seedling raising, plant growth, microorganism cell culturing,
insect rearing, commercial medicinal testing, building and timber material performance testing, industrial product
quality inspection, and constant temperature and humidity experiments.
2. Characteristics
1. The high-brightness large screen liquid crystal display panel and light-touch operational keys allow for easy
viewing of cycle period, segments, time, temperature, and humidity. The device can be connected to a
computer through an RS232 interface, ensuring that the entire experimental process is controlled safely.
2. The instrument has various anti-jamming measures and includes functions such as over-temperature protection,
thermal resistor short-circuit protection, and delay protection to ensure reliable security during use.
3. The entire structure is made using advanced techniques, including a cold-rolled steel surface with electrostatic
spraying for an attractive and durable finish.
4. The advanced air flue circulate mode ensures a balanced flow rate in the working room, preventing
powdery substances and young plants from blowing away. The device includes a world-famous brand
compressor and uses environmental protection refrigerant R134a to ensure safe and effective experiments.

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3. Main Technical Parameters
Model
INCH-070-001
INCH-150-001
Supply Power
220/50Hz
Temperature Range
With humidification 10-65 ºC; without humidification: 0-65 ºC
Temperature
Distinguishability
0.1 ºC
Temperature Fluctuation
High temperature ±1 ºC; low temperature ±0.5 ºC
Humidity Range
45 % ~ 90 % RH
Humidity Error
±5 % RH
Heating Power
1800W
2000W
Interior Dimensions (mm)
415*350*500
490*400*750
Exterior Dimensions (mm)
571*591*1051
646*641*1301
Packaging Dimensions (mm)
676*680*1235
751*730*1490
N.W. (kg)
69
86
G.W. (kg)
92
114
1. Working Room Temperature Profile
Diagram:
Cooling Down Speed (SPC-250) Heating Up Speed (SPX-250)
Note: The above specifications are tested with a chamber temperature of ≤25 ºC and are only applicable to
our products.
Temp.
Spot
Temp.
(ºC)
Temp.
Spot
Temp.
(ºC)
①
36.63
⑤
36.91
②
36.98
⑥
36.86
③
37.5
⑦
36.88
④
37.33
⑧
36.64
⑨
37.15

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2. Temperature and Humidity Diagram
4. Working Conditions
1. Ambient Temperature: 5 ºC ~ 32 ºC (e.g., if the set temperature is ≤10 ºC, the ambient temperature
should be ≤28 ºC).
2. Relative Humidity: ≤80 % RH.
3. Air Pressure: 86 - 10 Kpa.
4. Keep the climate chamber away from vibrations and corrosive gases.
5. Keep the container away from direct sunlight and other cooling and heating sources.
6. Keep it away from high concentrations of heat sources; install it horizontally and leave some space
between the machine and wall.
7. Install it in a room with good ventilation.
5. Precautions
Safety
1. The device should be connected to an earthed power supply to ensure the safety of the machine and the
experiment. Connect the power as required by the machine.
2. This equipment should not be used for inflammable and explosive, poisonous, or highly corrosive
experiments.
3. Ensure that the machine is installed horizontally. If the machine is newly installed, let it stand for 24 hours
before using it for the first time.
4. Non-professionals are not allowed to disassemble or repair this machine.
5. Do not set the temperature too low when the temperature inside the container is ≥ 50 ºC to ensure the
long service life of the compressor.
6. When an alarm is triggered, do not force start the machine until the problem is identified.
7. Read the instruction manual carefully before operating the machine.

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Operation
1. If starting up the machine for the first time, do not change any parameters unless allowed in the
operation manual.
2. Turn off any unnecessary lights or humidifiers.
3. During testing, if the temperature or humidifier is shut off for protection, set the humidifying parameters
to 0 when not necessary.
4. The working room uses a vertical ventilation circulation mode, so do not overload the trays with too many
items. The total burden area load should not exceed one third of the tray.
5. If the testing environment temperature is over 35 ºC, or if the working room temperature is over 50 ºC,
do not set a low temperature.
6. Do not use acids or alkalis to clean the inner and outer surface of the machine. Periodically clean it with
neutral detergent and wipe it with a dry cloth.
7. Turn off the power when finished using the machine and keep the interior and exterior of the chamber
dry and clean.
6. Operation Instructions
1. Instructions for Use
•Before turning on the power for the first time, let the humidifier stand at room temperature for half an
hour.
•The recommended working environment for the humidifier is between 5 ºC and 40 ºC, with a relative
humidity of less than 80% RH.
•Use clean water at temperatures below 40 ºC.
•If the humidifier has not been used for a long time, the water tank and sink must be cleaned before use.
2. Operation Steps
•Remove the water tank from the base and open the tank cover by rotating it. Take out the nozzle and fill
the tank with clean water. Tighten the radiator cap and place the tank smoothly on the base unit.
•Place the nozzle on the upper part of the tank and connect it to a transparent tube. Connect the other
end of the tube to the left side hole (to connect, pull out the left side hole cover and insert the
transparent tube into the hole tube).
•Connect the power supply and turn on the power switch (make sure it's dry and not turned on yet). The
power LED light will turn on.
•Adjust the fog volume control knob to select the appropriate fog volume.
3. Operation and Display Instructions of the Meter

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3.1 Definition
T1 Reservation: T1 flashes when entering the reservation timing. The【（2）display window】shows
the reservation countdown.
T2 Heating: T2 lights up when heating is output.
T3 Compressor: T3 lights up when the compressor starts up, and flashes when the compressor is waiting
for the start-up delay.
T4 Humidification: T4 lights up when humidification is output.
T5 Daytime: T5 lights up when in daytime mode.
T6 Night: T6 lights up when in night mode.
T7 Timer: T7 flashes when the timer is running, and the【（2）display window】shows the timing
countdown time of the timer.
T8 Water shortage: T8 lights up when there is a water shortage, and flashes when there is a water
shortage alarm.
T9 Open the door: T9 flashes when the door is open.
T10 Alarm: T10 lights up when there is an alarm of temperature and humidity, and flashes when
entering the low temperature or high temperature protection state.
T11 Lock the screen: T11 lights up when the screen is locked.
T12 Addition of water: T12 lights up when the water pump is output.
T13 Defrost: T13 lights up when defrost is activated.
T14 Magnetic valve: T14 lights up when magnetic output is activated.
T15 Illumination/sterilization: T15 lights up when illumination is output, and flashes when sterilization is
activated.
3.2 Display Window
【（1）display window】display: Period or segment values.
【（2）display window】display: Timing or time setting.
【（3）display window】display: Temperature measurement value.
【（4）display window】display: Temperature setting value.
【（5）display window】display: Humidity measurement value.
【（6）display window】display: Humidity setting value.
【（7）display window】display: Illumination value or heating output power.

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3.3 Definition of Keys
【LOCK】key
Under normal display, press and hold this button for 2 seconds to manually
lock or unlock the screen.
【ILLUMINATION】key
Under normal display, clicking this button switches the illumination.
【SET】key
Under normal display, clicking the button enters the setting value modification
interface. Press and hold this button for 3 seconds to enter the parameter
table modification interface.
【SHIFT】key
In the setting state, clicking this key shifts the set value, causing it to flicker
and allowing for modification.
Under normal display, if running in [day/night] mode, this key switches the
running state of day and night. If running in program mode, this key shifts the
segments or cycles displayed.
【INCREASE】key
In the setting state, clicking this button increases the setting value.
Under normal display, if there is a water shortage alarm, long-pressing this
button cancels the alarm and continues to add water.
【DECREASE/DEFROST】
key
In setting state, clicking this button decreases the setting value. Under normal
display, long-pressing this button turns on the defrost function manually.
【R/S】key
In normal displaying state, clicking or pressing this button for a long time
turns the controller on or off.
3.4 Operation and Use
3.4.1 When the controller is powered on, the【（3）display window】will show “PS”and
the【（5）display window】will show “V06”. There will be a short alarm, and after 2 seconds, the
controller will enter the normal display mode.
3.4.2 Modification of Setting Value
In the normal display mode, press the 【SET】button. The “TIME”and “SV”will flash at the same
time. You can change the flashing value using the 【SHIFT】, 【INCREASE】, and 【DECREASE】
buttons. Press the 【SET】button again to shift to the next value. After finishing the modification,
press and hold the 【SET】button for 1 second to exit the setting mode. In constant value mode, you
can continuously press the 【SET】button to change a set of data and then exit. After a short alarm,
the controller will enter the normal display interface and keep the data automatically.
When the controller is running in program mode, press the 【SET】button. The data of the segment
will start flashing. At this time, use the 【INCREASE】and 【DECREASE】buttons to change the
segment, where you can see the time, temperature, humidity, and illumination. Press the 【SET】
button again to change the data in the present segment. When the cursor returns to the segment
value and flashes, modify the next segment value again.
When the controller is running in 【DAY/NIGHT】mode, press the 【SET】button, and “DAY”will
flash. You can shift to “NIGHT”using the 【INCREASE】and 【DECREASE】buttons, and then
“NIGHT”will flash. You can press the 【SET】button to check the setting value and modify the
setting value in 【DAY/NIGHT】mode.

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3.4.3 Set Segment Number or Cycles
In the no constant mode (see parameter list -1-U1 for details), when the controller is stopped, press
the 【SET】button for 3 seconds. The 【(1) display window】will then show “Lc,”and the 【(2)
display window】will display the password number. Change the password number to 3using the
【INCREASE】and 【DECREASE】buttons, and enter the mode of segment and cycle.
In the programmable mode, if the “PRO”prompt flashes, you can set the total segment number of
running. Click 【SET】, and the “CYC”prompt will flash. You can then set the total cycle number of
running (when the cycle number is 0, the controller will run all the time). After finishing the setting,
press the 【SET】button for 3 seconds to exit, and the parameters will be stored.
In the DAY/NIGHT mode, the total segment number cannot be set; only the cycle number can be set.
3.4.4 Start and Stop
To start the controller, press the 【R/S】button U7 second (see user parameters table -1 for
details). The 【(2) display window】will show the remaining time during operation. When the time is
up, the controller will stop and the buzzer will sound, U9 (see user parameters table -1 for details).
The 【(2) display window】will display “End”. Alternatively, to stop the controller, press【R/S】U7
second for a long time and the 【(2) display window】will display “OFF”.
In programmable mode, if the total segment number is more than 1, and in the mode of constant
temperature and humidity (see parameter table -1-U5 and U6 for details), it is required to set each
period of time before starting the operation. Note that starting the operation with a setting time of 0
is not possible.
3.4.5 Reservation Function
If the reservation function AP is enabled (refer to the user parameters table -7 for details), press
【SET】again to set the reservation time in minutes. Otherwise, exit directly to the normal display
interface.
After setting the reservation time, press 【R/S】to start. When the reservation time is counting
down, you can enter the parameter table again to modify the reservation time. Or press 【R/S】to
stop the controller, which will automatically reset the reservation time to 0 and make it valid only
once.
3.4.6 Fault Prompt
Temperature alarm: If there is an upper temperature deviation alarm, the unit “ºC”will flash quickly.
If there is a lower temperature deviation alarm, the unit “ºC”will flash slowly.
Humidity alarm: If there is an upper humidity deviation alarm, the unit “%RH”will flash quickly. If
there is a lower humidity deviation alarm, the unit “%RH”will flash slowly.
If the display window labeled 【（3）】 shows “---”, it means that either the temperature sensor or
the controller is faulty. Please carefully check the temperature sensor and its wiring.

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3.4.7 Defrost Function
The defrost function can be turned on either automatically or manually. If you want to turn it on
automatically (check the parameters in table-4 for details) and then set the interval time and
duration of the defrost cycle. On the other hand, if you want to turn it on manually, click the
【DEFROST】button in the main interface. Note that the duration of the manual defrosting time still
depends on the time set in the parameter table, and the defrost function will end once the delay time
has elapsed.
3.4.8 Power-off Memory Function
You can choose whether to enable the power-off memory function by modifying the power-off
memory parameters (check “U2”parameters: internal parameters table-1).
3.4.9 Check and Set the Internal Parameters
In the normal display state, press 【SET】for 3 seconds, and the 【(1) display window】will
display the password prompt “Lc”, and the 【(2) display window】will display the password value.
Input the correct password to enter the setting mode of internal parameters, and then click 【SET】
to modify each parameter. After that, press 【SET】for 3 seconds, and the buzzer will give a short
blast and exit. The parameters will be stored automatically.
Note: All internal parameters have been adjusted during factory testing.
It is forbidden to modify them except for the Sensor Correction parameter.

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4. Parameters Table
User Parameters Table -1
Parameter
Indication
Parameter
Name
Parameter Function Description
(Range) Factory
Value
Lc
Password
When “Lc=9”, you can check and modify the
parameters.
0
U1
Running mode
0: Fixed value running mode.
1: Day or night mode, 0 ~ 99 cycles.
2: Program mode, programmable 1 ~ 30 period,
0 ~ 99 cycle.
(0～2)
0
U2
Power off running
mode
0: No run.
1: Running from the first paragraph (day).
2: Running from outage time.
(0～2)
2
U3
Timing correction
Correction of the total timing error, corrected
value = (running time in seconds - actual time in
seconds) * 10 ÷ actual time in minutes.
(-999～999)
0
U4
Time unit
1: minutes 0 ~ 9999; 2: hours 0 ~ 9999
(1～2) 1
U5
Timing
deviation of
constant
temperature
When starting the timing function, the difference
between the measured temperature and the set
value should be within U5.
Note: 0 means timing doesn't need to judge the
temperature.
(0～10.0ºC)
0
U6
Timing deviation of
constant humidity
Start timing if the humidity measurement value is
within U6 of the set value.
Note: 0 means timing doesn't need to judge the
humidity.
(0～50.0%)
0
U7
【R/S】
available time
After pressing U7 for a long time, 【R/S】is
available.
(0～10s)
0
U8
Lock screen time
Auto-lock screen time. 0 means no auto-lock
screen time.
(0～300s) 0
U9
Prompt time of end
of the running
When the running finishes, the buzzer beeps.
Note: 0 means beep all the way.
(0～300s) 0
UA
Illumination time
When the lighting is turned on, the lighting time is
automatically turned off.
Note: 0 means that the light must be turned off
manually.
(0～9999min) 0
Ub
Temperature of
starting sterilizing
If the setting temperature is ≤ Ub, the sterilization
function is turned on.
If the setting temperature is > Ub, the sterilization
function is turned off.
Note:
According to Parameters-8, you can turn on or
off the sterilization function.
-0.1 alarm of output humidity for sterilization
relay.
(-0.1～50.0ºC)
0
Uc
IP
IP of this machine
(1～16) 1

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Temperature Parameter Table -2
Parameter
Indication
Parameter
Name
Parameter Function Description
(Range) Factory
Value
Lc
Password
“Lc=103”, allows you to check and modify the
parameters.
0
TH
Upper
deviation
Over
temperature
alarm
If the “measured value > setting value + TH”, then
the upper deviation alarm will sound, and the
temperature and humidity output will be turned off.
When the alarm is triggered, the temperature alarm
relay will activate, the buzzer will sound, the alarm
indicator will light up, the temperature unit will flash
rapidly, and any button can be pressed to cancel the
buzzer.
(0～20.0ºC)
5.0
TL
Lower deviation
Over
temperature
alarm
If the “measured value < set value + TL”, the lower
deviation alarm will sound.
When the alarm is triggered, the temperature alarm
relay will activate, the buzzer will sound, the
temperature unit will flash slowly, and any button can
be pressed to cancel the buzzer.
Note: this function is invalid when “TL=0”.
(-50.0～0ºC)
0
Tb
Deviation
correction
Correct the error generated by the sensor when
measuring low temperature;
Tb = actual temperature value - meter measurement
value.
(-99.9～99.9ºC)
0
TA
Slope
correction
Correct the error caused by the sensor when
measuring high temperature.
TA = 1000 *(actual temperature value - meter
measurement value) / meter measurement value.
(-999～999)
0
TP
Heating ratio
Adjust the time proportionally.
(0.1～50.0) 8.0
TI
Heating
integral
Adjust the integral action.
(1～2000s) 500
TD
Heating
differential
Adjust the differential action.
(0～2000s) 200
TT
Heating cycle
Adjust the heating control cycle.
(1～60s) 5
Tc
Low
temperature
control
Heat off
Non-heating point during low temperature control,
only valid when the temperature setting is lower than
the ambient temperature.
(-2.0～0ºC)
-0.5
To
Heating power
Maximum percentage of the heating output power.
(0～100%) 100
Tu
Cooling on
When the compressor is in the manual start/stop
mode and in the off-type control, if the “measuring
temperature ≥ set temperature + Tu”, the
compressor is turned on.
(-10.0～10.0ºC)
0.6
Tn
Cooling off
When the compressor is in the manual start-stop
mode and in the off-type control, if the “measuring
temperature ≤ set temperature + Tn”, turn off the
compressor.
(-10.0～uP)
0.6
TE
High
temperature
control
Heat off
Heat off: Non-heating point during high temperature
control, only valid when the temperature setting is
higher than the ambient temperature.
(-10.0～10.0ºC)
5.0

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Humidity Parameter Table -3
Parameter
Indication
Parameter
Name
Parameter Function Description
(Range) Factory
Value
Lc
Password
To view and modify parameter values,
enter “Lc=203”.
0
HH
Upper deviation
Over humidity alarm
If the “humidity measurement value > set
value + HH”, an upper deviation alarm
is triggered, and the super-wet alarm
relay and humidity output are turned off.
When the alarm is triggered, the
humidity alarm relay has an output, the
alarm indicator is on, and the humidity
unit flashes rapidly.
(0～50.0%)
20.0
HL
Lower deviation
Over humidity alarm
If the “humidity measurement value < set
value + HL”, a lower deviation alarm is
triggered. The humidity alarm relay has
an output when the alarm is triggered,
the alarm indicator is on, and the
humidity unit flashes rapidly.
Note: this function is invalid when
“HL=0”.
(-50.0～0%)
0
Hb
Deviation correction
Correct the error generated when
measuring the sensor for low humidity.
Hb = actual humidity value - meter
measured value.
(-99.9～99.9%) 0
HA
Slope correction
Correct the error generated when
measuring the sensor for high humidity.
HA = 1000 * (actual humidity value -
meter measurement value) ÷ meter
measurement value.
(-999～999)
0
HP
Humidification ratio
Time proportional adjustment.
(0.0～90.0) 10
HI
Humidification integral
Integral action adjustment.
(1～999s) 200
Hd
Humidification
differential
Differential action regulation.
(0～999s) 30
HT
Humidification cycle
Humidification control cycle.
(0～60s) 3
Hc
Low humidity control
Humidification off
Non-humidification point during low
humidity control.
(-50.0～50.0%)
0.0
Ho
Humidification power
Maximum power percentage of
humidified output.
(0～100%) 100
Hu
Dehumidification
off
When the compressor is in manual
start/stop mode and the compressor is in
off-type control, if “measuring humidity ≥
set humidity + Hu”, turn on the
compressor.
(Hn～20.0%)
-5.0
Hn
Dehumidification
on
When the compressor is in manual
start/stop mode and the compressor is in
off-type control, if “measuring humidity ≤
set humidity + Hn”, turn off the
compressor.
(-20.0%～Hu)
3.0
HE
No humidification point
When the compressor is working in the
intermittent mode, the humidification can
be stopped in advance by modifying the
set value if the conditions are met.
(0.0～10.0)
2.0

14
Compressor Parameter Table -4
HF
Low humidity
No humidification point
When controlling for low humidity, if the
humidity measurement value is ≥
humidity set value + HF, the controller
will prevent humidification.
(-10.0～10.0%)
-5.0
Parameter
Indication
Parameter
Name
Parameter Function Description
(Range) Factory
Value
Lc
Password
View and modify parameter values
when “Lc=109”.
0
C1
Prohibit compressor
Working temperature
point
The compressor operation is absolutely
prohibited when “temperature
measurement ≥ C1”
(0～100.0ºC) 42.0
C2
Do not open the
compressor
Working temperature
point
When “temperature set value ≥ C2”, the
compressor is turned on only when the
temperature measurement value is
higher than the temperature set value.
(0～100.0ºC)
42.0
C3
Normally open
temperature point
When “temperature set value ≤ C3”, the
compressor operates in a balanced
manner.
(-15.0～100.0ºC)
40.0
C4
Normally open
humidity point
When the “humidity set value ≤ C4”, the
compressor operates in a balanced
manner.
(The normal open temperature point and
the normally open humidity point have
one condition, and the compressor works
in a balanced manner.)
(0～100.0%)
10.0
C5
Way of working
0: Automatically obtain refrigeration
and automatically obtain the
dehumidification threshold.
1: Manually set the cooling and
automatically obtain the
dehumidification threshold.
Note: Only valid when the compressor
is working in disconnected mode.
(0～3)
3
C6
Compressor
start delay
Compressor start delay protection time,
the minimum time interval from
compressor stop to restart.
(0～600s)
180
C7
Defrosting method
0: No defrosting function.
1: Electromagnetic valve defrosting.
2: Heating tube defrosting.
3: Independent heating tube defrosting.
(0～3)
1
C8
Defrost interval 1
Defrost time interval when “temperature
set value ≤ 10.0 ° C”.
Note: 0 means there is no automatic
cream in this section, it can be opened
manually.
(0～9999min)
180

15
C9
Defrost interval 2
Defrost time interval when “10.0 ºC <
temperature set value ≤ 20.0 ºC”.
Note: 0 means there is no automatic
defrosting in this section and it can be
done manually.
(0～9999min)
240
CA
Defrost interval 3
Defrost time interval when “20.0 ºC <
temperature set value ≤ 30.0 ºC”.
Note: 0 means there is no automatic
defrosting in this section and it can be
done manually.
(0～9999min)
480
Cb
Defrost interval 1
Defrost on time when “temperature set
value ≤ 10.0 ºC”.
Note: 0 means no defrosting in this
section.
(0～200s)
120
Cc
Defrost time 2
Defrost opening time when “10.0 ºC <
temperature set value ≤ 20.0 ºC”.
Note: 0 means no defrosting in this
section.
(0～200s)
120
Cd
Defrost time 3
Defrost opening time when “20.0 °C <
temperature set value ≤ 30.0 °C”.
Note: 0 means no defrosting in this
section.
(0～200s)
15
CE
Solenoid valve function
-2: No Solenoid valve function.
-1: When the compressor needs to be
turned on and the opening delay time is
over, the solenoid valve is opened first,
then the compressor is turned on again
after 10 seconds.
0: Normally open solenoid valve mode.
1, 2: See CF parameters below for
details.
(-2～2)
-2
CF
Solenoid valve on
If CE=0, when the “temperature
measurement value <temperature set
value-CF”, the solenoid valve is opened;
when “temperature measurement
value>temperature setting value+CF”,
the solenoid valve is closed.
If CE=1, the solenoid valve is opened
when “temperature set value ≥CF”, and
the solenoid valve is closed when
“temperature set value <CF”.
If CE=2, when the “temperature
measurement value>temperature setting
value+CF”, the solenoid valve is
opened; otherwise, the solenoid valve is
closed.
(-20.0～50.0ºC)
0

16
Internal Parameter Table -5
Parameter
Indication
Parameter
Name
Parameter Function Description
(Range)
Factory
Value
Lc
Password
The parameter values can be viewed and
modified when “Lc=209”.
0
P1
Illuminance
selection
0: no light; 1: total 3 levels.
2: total of 4; 3: total of 5.
4: total of 6 levels.
5: total of 10 levels (cold light source 0~10V
output).
(0～5) 0
P2
Humidity selection
0: no humidity; 1: only displays humidity; 2:
humidity is controllable.
(0～2) 2
P3
Internal
parameters
The reserved can be set.
(0～9999) 0
P4
Temperature
Upper limit setting
Maximum temperature setting.
(P5～99.9ºC)
65.0
P5
Lower limit
temperature setting
Minimum temperature set point value.
(-
19.9～P4ºC)
0.0
P6
Voltage upper limit
of humidity input
Corresponding input voltage value when humidity
is 100%.
( P7~5000
mV)
3600
P7
Lower voltage limit
of humidity input
Corresponding input voltage value when humidity
is 0%.
( 0~P6 mV)
1000
P8
Low temperature
protection
When “temperature measurement value or
temperature setting value ≤ P8”, humidity is not
controlled, only temperature is controlled, and the
alarm light flashes slowly.
(-
25.0～30.0º
C)
0
P9
High temperature
protection
When “temperature measurement value ≥ P9”,
the operation stops, all outputs are turned off,
and the alarm light flashes quickly.
(0～105.0ºC)
100.0
PA
Temperature filter
coefficient
Adjust the temperature sensitivity.
(1～200)
20
Pb
Humidity filter
coefficient
Adjust the humidity sensitivity.
(1～200)
20
PC
Input selection
0: If the door controller is connected, the door will
open. If the water controller is connected, there
will be a water shortage.
1: If the door controller is disconnected, the door
will open. If the water controller is closed, there
will be a water shortage.
2: If the door controller is connected, the door will
be open. If the water level controller is
disconnected, there will be a water shortage.
3: If the door controller is disconnected, the door
will be open. If the water level controller is
disconnected, there will be a water shortage.
(0～3)
0

17
Reservation Settings -7
5. Wiring Diagram
Pd
Water level delay
Adding water time
If Pd>0, extend the Pd time and close the water
after adding water.
If Pd < 0, water shortage is detected, and water
is added after a delay of Pd time.
(-20～20s)
5
PE
Humidity
Decimal place
selection
0: No decimals.
1: Decimal display.
(0～1)
0
PF
Temperature
display
insensitive area
Temperature display insensitive área.
(0～10.0ºC)
0.1
PH
Humidity display
Insensitive area
Humidity display insensitive área.
(0～50.0%)
1.0
Parameter
Indication
Parameter
Name
Parameter Function Description
(Range) Factory Value
Lc
Password
The parameter values can be
viewed and modified when
“Lc=36”.
0
AP
Reservation setting
0: reservation setting function off.
1: reservation setting function on.
(0～1)
0
T_
Reservation time
When the AP value is set to 1, to be
turned on, click the Set button again
to set the appointment time.
(0～9999min)
0

18
6. General Faults and Troubleshooting
Fault Phenomenon
Failure Analysis
Troubleshooting
Temperature control instrument
displays 0000 or -----
1. The sensor is broken.
2. The sensor wiring is off.
3. The controller is broken
1. Replace the sensor.
2. Check wiring and connect
securely.
3. Replace the controller.
Temperature has been rising
without control
1. Controller wiring board is bad.
1. Replace the controller wiring
board.
The circulating fan does not work
or has abnormal noise
1. The motor is faulty.
2. The motor capacitor is faulty.
3. The wiring board of the controller
is faulty.
4. The blades of the motor fan are
damaged.
1. Replace the motor.
2. Replace the motor capacitor.
3. Replace the wiring board of
the controller.
4. Replace the blades of the
motor fan.
The temperature does not rise
when the set temperature is higher
than the measured temperature
1. The heater is faulty.
1. Replace the heater.
Poor cooling after long-term use
1. The instrument's condenser is too
dusty.
2. There is not enough refrigerant,
and it needs to be refilled.
1. Clean the dust on and below
the condenser.
2. Add refrigerant.
No refrigeration or temperature
cannot be lowered
1. Check whether the compressor is
running or damaged.
2. Check whether the internal fan of
the chamber is running or damaged.
3. The compressor is running
normally but there is no cooling
effect.
4. Confusion in instrument
parameters.
5. Poor ventilation in the lower part
of the instrument.
1. Replace the compressor if it is
damaged.
2. Replace the motor and fan
blades if they are damaged.
3. Check for refrigerant leaks.
4. Adjust all meter parameters
to factory values.
5. Leave a gap of 10 cm or
more at the back and around
the instrument for better
ventilation.
Temperature overshoots too much
1. The instrument’s parameter
settings are incorrect.
1. Refer to the instructions and
readjust the parameters.
Inconsistent sample culturing effect
1. Placing an excessive amount of
sample in the work chamber can
result in poor uniformity.
1. Do not place more than 80%
of the volume with sample.

19
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