Electra PXD912 Service Manual page 76

CONTROL SYSTEM
11.4.3 Sequence Diagrams
a. Maintaining room temp at desired level by comparing RT and SPT with user
defined IFAN speed.
o
(RT - SPT) [ c]
+3
+2
+1
0
-1
-2
ON
COMP
OFF
(WVL)
ON
OFAN
OFF
USER FAN SPEED
IFAN
ON
RV
OFF
11-10
CONTENT
SM PXD 1-E.3 GB