Electra PXD912 Service Manual page 77

b. Maintaining room temp at desired level by comparing RT and SPT with
AUTO-IFAN.
+4
+3
+2
+1
0
-1
-2
o
(RT - SPT) [ c]
ON
COMP
OFF
(WVL)
ON
OFAN
OFF
H
M
IFAN
L
ON
RV
OFF
SM PXD 1-E.3 GB
CONTENT
CONTROL SYSTEM
11-11