M&C EC-30C - Page 29

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Components
Warning
type
Symbol Code Description Comments
Pre-cooling
unit
Temperature
01
Temperature
too low
T1 ≤ 0 °C (32 °F)
02
PCU takes too
long to cool
down
> 45 min.
Deep-cooling
unit I
Temperature
10
Cooling
temperature
too low
T2 < T2
set
-3 °C (26.6
°F)
11
Heating
temperature
too low
T2 < T2
set
-5 °C (23
°F) after heating
cycle
Peltier-
element(s)
12 Loss of power U
PE1
≥ 19 V
0 - 20 V
Module 1
13
0 - 20 V
Module
deteriorated
U
OUT
≤ U
OUT, set
-0.5 V
or
U
OUT
≥ U
OUT, set
+0.5 V
Temperature 14
Heating/
cooling takes
too long
> 45 min.
Thermal load maybe
too high or ambient
temperature too
high
Deep-cooling
unit II
Temperature
20
Cooling
temperature
too low
T3 < T3
set
-3 °C (26.6
°F)
21
Heating
temperature-
too low
T3 < T3
set
-5 °C
(23 °F) after heating
cycle
Peltier-
Element(s)
22 Loss of power U
PE2
≥ 19 V
0 - 20 V
Module 2
23
0 - 20 V
Module
deteriorated
U
OUT
≤ U
OUT, set
-0.5 V
or
U
OUT
≥ U
OUT, set
+0.5 V
Temperature 24
Heating/
cooling takes
too long
> 45 min.
Thermal load maybe
too high or ambient
temperature too
high