Velleman VM148 - Manual (Page 7)

7
error indications - operation mode - temperature modification
3. ERROR INDICATIONS
UnFL – Underflow error: The meas-
ured temperature is lower than the
minimum measurable temperature
(min. temp° = -18°C of 0°F).
OvFL – Overflow error: The meas-
ured temperature is higher than the
maximum measurable temperature
(max. temp° = +60°C of 146°F).
SEnS – Sensor error: Sensor
problem or faulty connection.
4. ACTUAL OPERATION MODE
Press ENTER to display the operation mode of the tempera-
ture controller.
Heating mode: temp° A > temp° B Cooling mode: temp° A < temp° B
5. TEMPERATURE MODIFICATION
6. FACTORY SETTINGS
This handy function allows you to modify the temperature
directly without reprogramming the max. and min. values
(temp° A and temp° B). the limit values will automatically shift
with the temperature modification.
Shortly press UP or DOWN in the temperature display to
display the average target temperature.
Repeatedly press UP or DOWN to rise or lower the
target temperature. Example: Set the target temperature to
25°C; temp° A and temp° B will automatically be modified to
26°C and 24°C.
Remove the power supply to the module. Hold ENTER
pressed and re-establish the power supply to the module.
DEF (default) will be displayed. Release the ENTER
button. The display will show the firmware version code.
Example: temp° A = 22°C,
temp° B = 20°C à target
temperature = 21°C.
Relay on
Temp. A
Temp. B