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approximately 5 seconds the thermostat will exit the parameter options and will return back to the default
temperature display.
Code
Description
Range
Default Value
P0
Heating/Cooling
C/H
C
P1
hysteresis
0.1-15
2
P2
Upper Limit
110
110
P3
Lower Limit
-50
-50
P4
Correction
-7.0 ~ 7.0
0
P5
Delay Start Time
0-10 mins
0
P6
High Temperature Alarm
0-110
OFF
P0: Cooling or heating parameter:
The parameter P0 has two settings, C and H. When set to C (default) the relay will energized when the
temperature is reached. Use this setting (C) if connecting to air-conditioning system. When set to H, the
relay will de-energize when the temperature is reached, i.e. the heating element will cut off. Use this setting
if controlling a heating device.
P1: Hysteresis parameter:
This set how much change in temperature must occur before the relay will change state. For example if set
to the default 2°C and the trigger temperature has been set to 25°C, it will not de-energize until the
temperature falls back below 23°C. Setting this hysteresis helps stop the thermostat from continually
triggering when the temperature drifts around the trip temperature.
P2: Upper limit of the thermostat parameter:
This parameter limits the maximum trigger temperature that can be set. It can be used as a safety to stop an
excessively high trigger temperature from accidentally being set by the user.
P3: Lower limit of the thermostat parameter:
This parameter limits the minimum trigger temperature that can be set. It can be used as a safety to stop an
excessively low trigger temperature from accidentally being set by the user.
P4: Temperature offset compensation parameter:
Should you find there is a difference between the displayed temperature and the actual temperature (for
instance if the temperature probe is on a long run of cable) you can make minor corrections to the
temperature reading with this parameter.
P5: Trigger delay parameter:
This parameter allows for delaying switching of the relay when the trigger temperature has be reached. The
parameter can be set in one minute increments up to a maximum of 10 minutes.
P6: High temperature alarm parameter:
Setting a value for this parameter will cause the relay to switch off when the temperature reaches this setting.
The seven segment display will also show '---' to indicate an alarm condition. The relay will not re-energize
until the temperature falls below this value. The default setting is OFF.
