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How to amend a Parameter Setting
When you enter one of the Menus as described above you will be presented with the first setting to be
updated. By pressing the UP and DOWN keys you can scroll through each one of the Parameter Setting
Codes.
Once you have selected the parameter you wish to change press the SET key and the display will now show
the setting for that parameter. Press the UP and DOWN keys to select the new setting then press RST key to
accept the new setting.
Once you have updated the new settings you need to save them by pressing and holding the RST key for
about 3 seconds until the display changes to display the current humidity reading. Please note that if you do
not press any key for 30 seconds or more then any updates to any of the parameters will not be saved.
Functions Explained (F1 to F8)
F1: Set Point: Indicates what midway humidity level the unit is to achieve.
F2: Difference: The point away from the Set Point that the Output Relay should start or stop operating
F3: Time Delay: The delay in minutes when the Output Relay will switch on after being requested to come on.
For example if it was set to "3" Minutes then as soon as the Output Relay is requested to be switched on it will
wait "3" minutes before coming on. The working indictor will flash on and off to indicate that the relay is due to
come on but is waiting. The light will become solid when the time delay is finished and the relay switches on.
This is a safety feature to protect the device that is connected to the unit from continual switching and causing
damage. If it's set to "0" then there will be no time delay.
F4: Alarm: This feature has been designed to sound an audible alarm and flash the display screen when the
area you are controlling is out with the desired humidity level. For example if it is set to 10% then the alarm will
activate when the area you are controlling goes above or below the Set Point by 10%. To silence the alarm
sound, press any key. If set to "0" the Alarm function will be cancelled.
F5 & F6: Operate When Error
This function has been designed as a fail safe mechanism to allow the unit to operate even during a situation
where a sensor error has occurred. It is extremely unlikely that a sensor error would suddenly occur while
using the unit in a normal way, however, external problems such as the sensor wire being cut or damaged
accidentally would cause the unit to error. F5 & F6 will allow the user to program a situation where by the relay
will come on for the number of minutes set in F5 then turn off for the number of minutes set in F6 and
repeating this until the error is resolved. For example setting F5 to 1 and F6 to 5 means that during a sensor
error the relay will switch on for 1 minute (F5) then will turn off 5 minutes (F6).
F7: Calibration: This setting will change the value that the sensor is reading by the number of %HR that has
been selected on this setting. The value can be set from -15% to +15% of the actual reading.
F8: Mode Selection: This setting instructs the unit to operate either as a Humidifying or Dehumidifying
controller
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