8-17
CONTROL SYSTEM
Revision Y05-01Service Manual - DNC Series
Maintains room temp at desired level by controlling the 2-Stage
Electric Heaters.
(RT - SPT) [
o
c]
+2
+1
0
-1
-2
-3
ON
OFF
ON
OFF
H
OFF
L
30 sec
M
HE1
HE2
IFAN
Notes:
1) COMP (or WVL), OFAN and RV are always OFF.
2) Refer to Sect 2.3 and 4.0.3.c for IFAN operations.
5. Automatic Cooling or Heating
5.0. Automatic Cooling or Heating - General
The Auto Mode is for model with compressor and the WVL-RH only.
The WVL-ST, RC and SH units do not work in Auto Mode.
5.0.1 Switching-temperature between Cooling and Heating is SPT ±
3
o
c.