Stulz EC Tower ECD 91 - Page 180

180 EN/01.2019/G22 © STULZ GmbH – all rights reserved
ec tower technical manual
7.2.3 Understanding the LEDs on the CPY controller



3 2
M7
COM
R Y G
3 2 1
M14
JS6
Key
LEDs
Number
1
1
2
2
3
3
Meaning
(R)
Red
alarm active (the alarm can be
identied by the type of ashing,
see the table of alarms)
(Y)
Yellow
steam production in progress (LED
always on 100% production, 2
ashes 20%, 3 ashes 30%, …)
(G)
Green 24 Vac power connected
Diagrams describing the ashes
1) Steam production: yellow LED - Temporary production (“short  ashes”)
PRODUCTION
< 1%
ON
OFF
time
ON
OFF
time
1 1 1 1 1 1 1
3 s 3 s
3 s
3 s 3 s 3 s
1-19%
ON
OFF
time
1 2 2 2 2 2 21 1 1 1 1
3 s 3 s 3 s 3 s 3 s
20-29%
ON
OFF
time
1 5 9 1 5 9 1 5 9
3 s 3 s
90-99%
1 s
2) Steam production: yellow LED - Steady production (“long ashes”)
PRODUCTION
< 1%
ON
OFF
time
ON
OFF
time
ON
OFF
time
1 2 2 2 2111
3 s 3 s 3 s
20-29%
ON
OFF
time
1 2
3 4 6 7 8 95 1
3 s
90-99%
100%
1 s 1 s 1 s 1 s 1 s
Fast ash: 0,2 seconds ON and 0,2 seconds OFF; Slow ash: 1 second ON and 1 second OFF
Each set of impulses is separated from the next by a 3 second pause, to allow the user to count the impulses
in each set: this allows the instant steam production to be identied.
3 2
M7
COM
R Y G
3 2 1
M14
JS6
Key
LEDs
Number
1
1
2
2
3
3
Meaning
(R)
Red
alarm active (the alarm can be
identied by the type of ashing,
see the table of alarms)
(Y)
Yellow
steam production in progress (LED
always on 100% production, 2
ashes 20%, 3 ashes 30%, …)
(G)
Green 24 Vac power connected
Diagrams describing the ashes
1) Steam production: yellow LED - Temporary production (“short  ashes”)
PRODUCTION
< 1%
ON
OFF
time
ON
OFF
time
1 1 1 1 1 1 1
3 s 3 s
3 s
3 s 3 s 3 s
1-19%
ON
OFF
time
1 2 2 2 2 2 21 1 1 1 1
3 s 3 s 3 s 3 s 3 s
20-29%
ON
OFF
time
1 5 9 1 5 9 1 5 9
3 s 3 s
90-99%
1 s
2) Steam production: yellow LED - Steady production (“long ashes”)
PRODUCTION
< 1%
ON
OFF
time
ON
OFF
time
ON
OFF
time
1 2 2 2 2111
3 s 3 s 3 s
20-29%
ON
OFF
time
1 2
3 4 6 7 8 95 1
3 s
90-99%
100%
1 s 1 s 1 s 1 s 1 s
Fast ash: 0,2 seconds ON and 0,2 seconds OFF; Slow ash: 1 second ON and 1 second OFF
Each set of impulses is separated from the next by a 3 second pause, to allow the user to count the impulses
in each set: this allows the instant steam production to be identied.
7.2.4 Understanding the yellow steam production LED