E15 | Sensor calibration T1 | 0 K | ||
| (cold store) |
|
|
|
E16 | Sensor calibration T2 | 0 K | ||
| (evaporator) |
|
|
|
E17 | Operation of | 0 | = Relay | 2 |
| compressor relay | 1 | = Relay is perma- |
|
| if cold store sensor T1 |
| nently engergized |
|
| is defective | 2 | = Alternately ener- |
|
|
|
|
| |
|
|
| gized according to |
|
|
|
| time set in E18 |
|
|
|
| and E19. |
|
E18 | “On” time at E17 | 1 to 99 mins. | 15 mins. | |
E19 | “Off” time at E17 | 1 to 99 mins. | 15 mins. | |
|
|
|
|
|
To exit from the programming mode:
Press the 
key after inputting the last level.
7.2Sensor calibration (parameters E15 and E16) The cold store and evaporator sensors can be calibrated.
Note:An additional resistance of 7 q in each case, caused by the extension of the sensor cable, results in a change in the temperature display by +1K.
How to proceed: Measure the temperature at the sensor concerned with a calibrated thermometer or submerge the sensor in well mixed iced water (0 °C).
Compare the measured temperature with the temperature displayed on the unit display.
If the measured temperature is lower than the one displayed, set the negative difference as the programming value
(e.g. - 2 K).
If the measured temperature is higher than the one displayed, set the positive difference as the programming value
(e.g. 2 K).
The temperature display is then corrected by the set value.
15
