CONTROL CUBE RH” HUMIDITY CONTROLLER MANUAL
“Control Cube RH”
Digital Humidity Controller
Operating Manual
Specifications
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Willhi WH8040 digital humidity controller; 12vdc; .350A
Humidification and de-humidification modes
Humidity measurement range: 1% ~99%
Humidity control range: 1% ~99%
Humidity measurement error: +/- 3%
Sensor Type: HM40 capacitive
Control accuracy: 1 %
Working temperature: 0 ~ 50°C
Storage temperature: -10 ~ 60 °C
Bright, 3 digit LED display
Detachable / replaceable sensor lead – 8 ft. sensor lead length
Non-skid poly-foam base
Perfect Cheese, LLC
Hartsville, SC 29550
www.Perfect-Cheese.com
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CONTROL CUBE RH” HUMIDITY CONTROLLER MANUAL
Important Safety Precautions:
The Control Cube RH operates on 12 vdc and can control appliance current of up to 1A.
Deviation from these values can result in damage to the controller. The controller
enclosure is not sealed and under no circumstances should be immersed in water or
installed exposed to weather. There are no user serviceable parts inside the enclosure, and
opening the enclosure will void warranty and risk electrical shock.
For in-warranty service or replacement contact [email protected].
Quick look
The Control Cube RH is a compact modular digital humidity controller that can be used to
control relative humidity within cooling enclosures like refrigerators, freezers, or wine coolers.
It is designed to be used along with the Cave Cube humidifier as a complete humidity control
package. It can also be used independently as a high-precision humidity monitor
What Ships
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Control Cube RH module
12vdc 2A wall-adapter power supply
9 ft. long flat sensor cable
Replaceable sensor head
Door entry seal strip
Instruction manual
Wall “quick mount” bracket with screws (optional)
Installation
Note: A video installation tutorial is available at www.perfect-cheese.com.
1. Remove all parts from packaging; check that you have all components listed
above.
2. Determine best location for controller.
3. If you’re wall mounting the CCRH remove the optional mounting bracket and
screws. Locate bracket and mark and drill pilot holes. Attach the bracket wall
using the screws (with anchors if you’re attaching to drywall or thin paneling).
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CONTROL CUBE RH” HUMIDITY CONTROLLER MANUAL
4. Once the bracket is attached you can mount the Cube and plug in to a wall
socket.
5. The CCRH ships with an “entry seal strip” that doesn’t require an entry hole for
the flat cable. To install (a) wrap the flat cable around the enclosure front edge
where you want it placed and secure with tape on inside and outside; (b)
remove the release paper from the back of the strip; (c) place strip vertically on
inside door edge over the flat cable and press to seal.
Programming the WH8040 Humidity Controller
Note: A video programming tutorial can be seen at www.perfect-cheese.com.
Front Panel
LED Status Description:
1. WORKING light: Remains ON when humidity is below setpoint; flashes during
programming.
2. SET light: Remains ON when Setpoint is displayed; OFF when measured
temperature is displayed.
Key Functions:
1. To change Setpoint: Press SET key once to display %RH setpoint, then use the
▲ or ▼ keys to increase or decrease value. Once desired setpoint is reached
press SET key again.
2. Turning controller ON and OFF: Pressing the RST (Reset) key and holding for 3
seconds will turn the controller OFF. Pressing the RST key again will turn the
controller back ON.
System Settings
1. To change system settings: Press and hold SET key for three seconds to
display system settings, then use the ▲ or ▼ keys to scroll through settings.
To change a displayed setting, press SET key once and use the ▲ or ▼ keys
adjust to desired value. To exit and save settings press RST key. Note:
Controller will exit and save settings automatically after 5 seconds.
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CONTROL CUBE RH” HUMIDITY CONTROLLER MANUAL
2. Symbol Details:
H or C: Mode (H= Humidification C= De-humidification)
D: Hysteresis (or temperature offset)
LS: The minimum set limit
HS The maximum set limit
CA Temperature calibration
PT Delay time Minutes
2.1. (H) or (C) Control Mode:
Function: The Control Mode sets the controller to either humidification (i.e.
power activated when humidity is below setpoint) or de-humidification (power is
activated when above setpoint).
To change the Control Mode: Press and hold the SET key for 3 seconds, to
display the mode (it will be either (H) or (C)). When ready exit the settings
menu by pressing RST or waiting 5 sec.
Operation: (C) De-humidification Mode: When the measured humidity is
higher than or equal to the set value + (D) hysteresis, power will be supplied to
the appliance. When the measured humidity is below the set value, power will
be turned off.
Example: Mode is (C) De-humidification, Setpoint is 50 %RH and (D)
hysteresis is set to 2%. When humidity increases to 52 deg. power will be
turned ON; below 50 it will turn OFF.
(H) Humidification mode: When the measured humidity is lower than or equal
to the set value, power will be OFF. When the measured
humidity drops below the set value – (D) hysteresis, power will be supplied to
the appliance
Example: Mode is (H) Humidification, Setpoint is 50 %RH and (D)
hysteresis is set to 2%. When humidity decreases to 48 deg. power will
be turned ON; above 50% it will turn OFF.
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CONTROL CUBE RH” HUMIDITY CONTROLLER MANUAL
2.2 (D) Hysteresis function:
Function: Hysteresis is a “offset” or %RH differential that is either added to or
subtracted from the setpoint depending on the control mode. Default setting is
1.0%.
To change hysteresis: Press and hold the SET key for 3 seconds, then the▲
once to display the hysteresis (D). Press SET key to display hysteresis and use
the ▲ or ▼ keys adjust to desired value. When ready exit the settings menu
by pressing RST or waiting 5 sec.
Operation: (See Control Mode above)
2.3 (HS) and (LS) Upper and Lower Limit Settings
Function: Establishes the “range” of humidity measurement and control.
Default setting: Full range of controller (0% to 99%)
To change the Limit Settings: Press and hold the SET key for 3 seconds,
then the▲ five times to display the Lower Set Limit (LS). Pressing▲ again will
display the High Set Limit (HS). When ready exit the settings menu by pressing
RST or waiting 5 sec. Note: The setpoint needs to be set within the new range
before the limit settings are changed.
Operation: Use the (HS) and (LS) settings to reduce the range of humidity
control.
Example: (LS) is set to 20% and (HS) is set to 80% deg. The setpoint
cannot exceed this range, and the controller will be disabled when range
is exceeded.
2.4 (CA) Calibration
Function: Adds (or subtracts) an “offset” in the measured vs. displayed %RH.
Note: This is not calibration in the true sense, but simply an artificial adjustment
to the displayed %RH above or below the measured %RH. For most
applications this setting should be zero.
Default setting: 0 deg.
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CONTROL CUBE RH” HUMIDITY CONTROLLER MANUAL
To change the Calibration offset: Press and hold the SET key for 3 seconds,
then the▲ three times to display the calibration setting (CA). When ready exit
the settings menu by pressing RST or waiting 5 sec.
Operation: If the CA value is positive it will be added to the measured
probe humidity. If the CA value is negative it will be subtracted.
Example: Calibration offset (CA) is set to – (minus) 2 deg. and the probe
humidity is 50%. Displayed value will be 48%.
2.5 (PT) Delay Protection
Function: Adds an “on” delay (in minutes) before power is applied to the
appliance.
Default setting: 0 min.
To change the Delay Protection: Press and hold the SET key for 3 seconds,
then the▲ four times to display the delay protection setting (PT). When ready
exit the settings menu by pressing RST or waiting 5 sec.
3. Fault messages
--- ; Sensor probe failure or not connected to controller
LLL - Humidity below 1%
HHH – Humidity above 99%
4. Typical settings for controlling humidity in a cooling enclosure:
(SET) = 55%; control mode H (Humidification); D = 2%; LS and HS (default);
CA = 0; PT = 0
Limited Warranty
The Control Cube T controller module (box) is warrantied for a period of one
year from the date of purchase. Warranty covers defects in workmanship and
failure to function properly from causes not attributable to damage, misuse or
improper operation. Perfect Cheese will either replace or repair an underwarranty component at its discretion. Components that fail after expiration of
warranty can be repaired by Perfect Cheese at a reasonable charge. There are
no user serviceable parts inside the module’s main enclosure and any attempt
to open will void any warrantee.
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