4
Lit with output Y1 “ON”
De-activated with continuous or dual action
discontinuous output
Lit with output
Y1 (heat) “ON”
Only for HEAT/COOL
dual action
discontinuous
control
Lit with output
Y1F (cool) “ON”
Lit with output Y2 “ON”
Lit with output Y3 “ON”
Lit in Manual operation
Lit when the Remote Set point is operating
(if off, the operating Set point is the Local one)
Lit when Auto-Tune or Expert-Tune is AT in
course
Permanently lit when the serial communication
is enabled to write.
Flashes with signal in transit
When lit indicates that
the stored programme
is in course
Only for Set
programmable
option
When lit indicates the
temporary suspension
of the programme in
course
Loop -
Break -
Alarm
With output Y3 active and configured as
Loop Break Alarm, the front displays X and
W are flashing (see p. 14)
3
2
1
7 - Output Y1 (red)
7a - Output Y1 (heat)
7b - Output Y1F (cool)
8 - Output Y2 (red)
9 - Output Y3 (red)
10 - Manual (green)
11 - Remote (green)
12 - Auto-Tune (green)
13 - Serial comm. (green)
14 - In execution (green)
15 - Waiting (green)
LEDS FOR OUTPUT STATE
LEDS FOR OPERATING STATE
MAN
REM
AT
SCI
RUN
HLD
275.8
275.8
50
4
2 • FUNCTION OF KEYS AND DISPLAYS