Electra EMD 40 - Auto Cooling or Heating, RC or SH Groups

7-20
CONTROL SYSTEM
Revision Y05-01
Service Manual - EMD Series
5.2 Sequence Diagrams
5.2.1 Auto Cooling or Heating, RC or SH Groups
Maintains room temp at desired level by selecting between cooling and heating modes.
(RT - SPT) [
o
c]
+3
+2
+1
0
-1
-2
-3
-4
ON
OFF
ON
OFF
H/M/L/OFF
ON
OFF
ON
OFF
COMP
& OFAN
HE1
HE2
IFAN
RV
USER FAN SPEED H/M/L/OFF
Auto Cool Mode Auto Heat Mode
> 4 min > 3 min
> 3 min > 2 min
(3) (3)
(4)
(4)
Auto Heat Mode