IHC-200 Plug and Play Humidity Controller

Shenzhen Inkbird Technology Co., Ltd.

Contact: support@inkbird.com

Version: V6.0

Made in China, Designed by INKBIRD

Certifications: FC, CE, RoHS

Introduction

What is IHC-200?

The IHC-200 is an easy-to-use, safe, and reliable dual relay output humidity controller. Its plug-and-play design and dual LED screens make it more user-friendly. The IHC-200 can control any 100-265 volt humidifier, dehumidifier, or fan.

Main Features

Switch between humidification and dehumidification modes automatically.
Control humidity by setting value and differential value.
Calibrate the humidity value.
Delay protection for control output.
Query current humidity.
Alarm when humidity exceeds high/low humidity setting value.
Alarm when sensor error or humidity exceeds limit.

Specifications

Parameter	Value
Power Input	100~240VAC, 50Hz/60Hz
Power Output	Max. 10A, 100V~240V AC
Power Consumption	<3W
Humidity Measuring Range	5%-99.99%RH
Humidity Control Range	5%-99%RH
Resolution	0.1%RH
Accuracy	±3%RH
Sensor Model	HTG3535CH
Sensor Stability	<0.5%RH/yr
Sensor Length	2m / 6.56ft
Relay Contact Capacity	Humidification (12A, 100-240VAC), Dehumidification (12A, 100-240VAC)
Input Power Cable Length	1.5m (5ft)
Output Power Cable Length	30cm (1ft)
Dimension	Main Body: 140x68x33mm (5.5x2.7x1.3 inch)
	Socket (US Version): 85x42x24mm (3.3x1.7x1.0 inch)
	Socket (EU Version): 135x54x40mm (5.3x2.1x1.6 inch)
	Socket (UK Version): 140x51x27mm (5.5x2.0x1.0 inch)
Ambient Temperature	-30~75 °C / -22~167 °F
Storage	Temperature: -30~75 °C / -22~167 °F, Humidity: 20~85% (No Condensate)
Warranty	1 Year

Device Layout and Functions

The controller features a main unit with dual LED displays and several buttons, along with interchangeable sockets for different regions.

Main Unit Description:

PV (Process Value) Display: Shows current humidity. Under setting mode, it displays menu codes. Pressing the decrease and increase buttons simultaneously displays current humidity.
SV (Setting Value) Display: Shows the target humidity setting. Under setting mode, it displays the value being set.
Humidification Indicator Lamp: On when humidification is working; Off when humidification is stopped.
Dehumidification Indicator Lamp: On when dehumidification is working; Off when dehumidification is stopped; Flicker when dehumidification is in delay protection.
SET Key: Press and hold for 3 seconds to enter the function setting menu. Press and hold for 3 seconds during setting to quit and save changes.
DECREASE Key: Under running mode, press to query DD (Dehumidification Differential) value. Under setting mode, press to decrease the value.
INCREASE Key: Under running mode, press to query HD (Humidification Differential) value. Under setting mode, press to increase the value.

Sockets: The device supports different socket types:

Humidification Device Socket (Output 1): For connecting humidification equipment.
Dehumidification Device Socket (Output 2): For connecting dehumidification equipment.

Available socket versions include EU, US, AU, and UK types.

Basic Operation

Power On/Off

To turn off the controller: Press and hold the "SET", "Up", and "Down" buttons simultaneously for 3 seconds. All displays and outputs will turn off.

To turn on the controller: Press and hold the "SET", "Up", and "Down" buttons simultaneously for 1 second from the power-off state.

Enquiry Differential Value

When the controller is operating normally, short press the "Up" button once to display the Humidification Differential (HD) value. Short press the "Down" button once to display the Dehumidification Differential (DD) value. The display will return to normal after two seconds.

Enquiry Measuring Humidity

Press the "Up" and "Down" buttons simultaneously to display the current humidity value on the PV screen. Release the buttons after 2 seconds to return to the normal display mode.

How to Set Parameters

When the controller is working normally, press and hold the "SET" button to enter parameter setting mode. The PV screen will display the first menu code "HS" (Humidity Set Value), and the SV screen will display the current setting value.

Press the "SET" key to cycle through menu codes. Use the "Up" and "Down" buttons to change the current parameter value.

After finishing settings, press and hold the "SET" key for 3 seconds to save the parameter settings and return to the normal humidity display mode. If there is no operation for 10 seconds during setting, the system will automatically quit the menu and return to normal display without saving changes.

Setup Flow Chart

The setup process involves setting various parameters sequentially:

Press "SET" key for over 3 seconds to enter parameter setup mode.
HS (Humidity Set Value): Set the desired humidity level (e.g., 50%RH).
Press "SET".
HD (Humidification Differential Value): Set the differential for humidification (e.g., 5%RH).
Press "SET".
DD (Dehumidification Differential Value): Set the differential for dehumidification (e.g., 5%RH).
Press "SET".
AH (Alarm High Humidity Set Value): Set the high humidity alarm threshold (e.g., 99%RH).
Press "SET".
AL (Alarm Low Humidity Set Value): Set the low humidity alarm threshold (e.g., 0%RH).
Press "SET".
PT (Delay Protection Value): Set the delay time for protection (e.g., 1 minute).
Press "SET".
CA (Humidity Calibration): Calibrate the humidity sensor (e.g., 0%RH offset).
Press "SET" for 3 seconds to save and enter "Working Normally" mode.

Settings

Menu Code	Function	Setting Range	Default	Unit	Remarks
HS	Humidity Set Value	5~99	50	% RH	5.1
HD	Humidification Differential Value	1~20	5	% RH	5.1
DD	Dehumidification Differential Value	1~20	5	% RH	5.1
AH	Alarm High Humidity Set Value	50~99	99	% RH	5.2
AL	Alarm Low Humidity Set Value	0~50	0	% RH	5.2
PT	Delay Protection Value	0~10	1	minute	5.3
CA	Humidity Calibration	-10~10	0	%	5.4

5.1 Humidity Control Range Setting (HS, HD, DD)

When the controller operates normally, the LED displays the current measured humidity. It then automatically recognizes and translates the need for humidifying or dehumidifying.

Dehumidification: When the measured humidity (PV) is greater than or equal to HS (Humidity Set Value) + DD (Dehumidification Differential Value), the dehumidification indicator lamp turns on, and the dehumidification relay activates. If the dehumidification indicator light flickers, the equipment is in delay protection. When the measured humidity (PV) is less than or equal to HS (Humidity Set Value), the dehumidification indicator lamp turns off, and the dehumidification relay stops working.
Humidification: When the measured humidity (PV) is less than or equal to HS (Humidity Set Value) - HD (Humidification Differential Value), the humidification indicator lamp turns on, and the humidification relay activates. When the measured humidity (PV) is greater than or equal to HS (Humidity Set Value), the humidification indicator lamp turns off, and the humidification relay stops working.

5.2 Alarm High/Low Limit Setting (AH, AL)

When the measured humidity (PV) is greater than or equal to AH (Alarm High Humidity Set Value) or less than or equal to AL (Alarm Low Humidity Set Value), an alarm will sound, and the current value along with AH/AL will be displayed on the PV screen. Pressing any button will stop the alarm sound, but the alarm status will not change until the measured humidity returns to the set range.

5.3 Compressor Delay (PT)

When the controller is in dehumidification mode, it will not start dehumidification immediately if PV ≥ HS + DD. Instead, it will wait for the preset delay time (PT).

If the time interval between two dehumidification operations (or from power on to dehumidify) is larger than the preset delay, dehumidification will start immediately. If the time interval is less than the preset delay, dehumidification will not start until the preset delay is satisfied.

The delay time is calculated right after dehumidification stops working.

5.4 Humidity Calibration (CA)

When there is a deviation between the measured humidity and the actual humidity, use the humidity calibration function to align them. The corrected humidity is equal to the humidity before calibration plus the corrected value. The corrected value can be positive, zero, or negative.

Error Description

Sensor Fault Alarm: If the humidity sensor is short-circuited or open-circuited, the controller will enter the sensor fault mode, canceling all actions. A buzzer will sound, and the LED will display "ER". The buzzer alarm can be dismissed by pressing any key. After the fault is resolved, the system will return to normal working mode.

Technical Assistance and Warranty

7.1 Technical Assistance

For any problems with installing or using the humidity controller, please carefully review this manual. For assistance, write to cs@inkbird.com. Replies are provided within 24 hours on weekdays.

You can also visit www.inkbird.com for answers to common technical questions.

7.2 Warranty

INKBIRD TECH. C.L. warrants this humidity controller for one year from the date of purchase against defects caused by INKBIRD's workmanship or materials, when operated under normal conditions by the original purchaser (non-transferable). This warranty is limited to the repair or replacement, at INKBIRD's discretion, of all or part of the thermostat. The original receipt is required for warranty claims.

INKBIRD is not responsible for injury, property damage, or other consequential damages arising directly from actual or alleged defects in workmanship of the product. There are no other representations, warranties, or conditions, express or implied, statutory or otherwise, other than those contained herein, as per the sale of goods act or any other statute.

Troubleshooting Guide

Issues	Causes	Solutions
The probe reading is incorrect.	Water or condensation enters the probe. The probe is placed in an area with poor humidity circulation. The probe is damaged.	Adjust the position of the probe. Use a dry cloth to clean. If the probe is used in a high humidity environment, dry it using a hairdryer and then test it at room. Check if the probe is intact. If the deviation is small, use the CA function to calibrate.
Output 1 (work1) will not turn on.	Incorrect settings. Incompatible humidifier. Output malfunction.	Verify that the settings are correct. The humidifier power is within the range of 100-240V, 10A. The humidifier can automatically turn on when plugged in. The humidifier does not have a built-in humidity control, or the built-in humidity control does not affect the IHC-200 control. If there are no issues with points 1 & 2, perform the following: Unplug the controller. Press and hold the "SET" button. Plug the controller to power on, then release the "SET" button. Quickly press the "Up" button (do not press the "Down" button). The "work1" indicator and output should activate. If the humidifier still does not work, please contact customer service.
Output 2 (work2) will not turn on.	Incorrect settings. Incompatible dehumidifier. Output malfunction.	Verify that the settings are correct. The dehumidifier power is within the range of 100-240V, 10A. The dehumidifier can automatically turn on after power is connected. The dehumidifier does not have a built-in humidity control, or the built-in humidity control does not affect the IHC-200 control. If there are no issues with points 1 & 2, perform the following: Unplug the controller. Press and hold the "SET" button. Plug the controller to power on, then release the "SET" button. Quickly press the "Down" button (do not press the "Up" button). The "work2" indicator and output should activate. If the dehumidifier still does not work, please contact customer service.
Output 1 (work1) will not turn off.	Incorrect settings. Humidifier power exceeds limit. Output malfunction.	Verify that the settings are correct. The humidifier power is within the range of 100-240V, 10A. If there are no issues with points 1 & 2, perform the following: Unplug the controller. Press and hold the "SET" button. Plug the controller to power on, then release the "SET" button. Quickly press the "Down" button (do not press the "Up" button). The "work2" indicator and output should activate. If the humidifier still does not turn off, please contact customer service.
Output 2 (work2) will not turn off.	Incorrect settings. Dehumidifier power exceeds limit. Output malfunction.	Verify that the settings are correct. The dehumidifier power is within the range of 100-240V, 10A. If there are no issues with points 1 & 2, perform the following: Unplug the controller. Press and hold the "SET" button. Plug the controller to power on, then release the "SET" button. Quickly press the "Up" button (do not press the "Down" button). The "work1" indicator and output should activate. If the dehumidifier still does not turn off, please contact customer service.

Safety Precautions

Please read the specifications carefully before using the product.
Do not touch the terminals while power is being supplied, as this could lead to electric shock.
Do not allow pieces of metal, wire clippings, or fine metallic shavings or filings from installation to enter the product. This can result in electric shock, fire, or malfunction.
Keep the product away from heat sources such as fires, flammable or explosive gas, etc. This may lead to excessive heat generation, ignition, and explosion.
Never disassemble, modify, or repair the product, or touch any of its internal parts. This can result in electric shock, fire, or malfunction.
If the output relays are used beyond their life expectancy, contact fusing or burning may occasionally occur. Always consider the application conditions and use the output relays within their rated load and electrical life expectancy. Do not immerse the product in water or seawater.

Additional Information

For reference, keep this manual properly. You can also visit the official website for product usage videos. For any usage issues, please feel free to contact support@inkbird.com.

Multilingual versions of the manual are available on the website.

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