Electra PXD912 Service Manual page 86

CONTROL SYSTEM
11.10.2 Sequence Diagrams
a. Auto Cooling or Heating, RC or SH Groups
Maintains room temp. at desired level by selecting between cooling and heating
modes.
o
(RT - SPT) [ c]
+3
+2
+1
0
-1
-2
-3
-4
Auto Heat Mode
ON
COMP
OFF
& OFAN
ON
HE1
OFF
ON
HE2
OFF
H/M/L/OFF
IFAN
ON
RV
OFF
11-20
Auto Cool Mode
> 4 min
(3)
USER FAN SPEED
> 3 min
(4)
CONTENT
Auto Heat Mode
> 3 min
(3)
H/M/L/OFF
> 2 min
(4)
SM PXD 1-E.3 GB