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SYSTEM CONTROL SWITCH - TEST
Disconnect leads from control switch. Turn control to posi-
tion being tested (see Figure 8). There must be continuity
as follows:
1. “Off” Position-no continuity between terminals.
2. “Lo Cool” Position-between terminals “C” and “3”,
“C2” and “2”, “LO” and “M/S”, “AR” and “5”.
3. “Med Cool” Position-between terminals “C” and “3”,
“C2” and “2”, “M” and “M/S”, “AR” and “5”.
4. “Hi Cool” Position-between terminals “C” and “3”,
“C2” and “2”, “H” and “M/S”, “AR” and “5”.
5. “Hi Heat” Position-between terminals “C” and “1”,
“C2” and “4”, “H” and “M/S”, “AR” and “5”.
6. “Med Heat” Position-between terminals “C” and “1”,
“C2” and “4”, “M” and “M/S”, “AR” and “5”.
7. “Lo Cool” Position-between terminals “C” and “1”,
“C2” and “4”, “LO” and “M/S”, “AR” and “5”.
8. “Fan Only” Position-between terminals “L1”, “M”
and “2”.
SYSTEM CONTROL SWITCH
(“WE” & “WY” Models)
An eight position switch is used to regulate the operation
of the fan motor, compressor and electric heater.
The unit can be operated in cooling or heating mode with
the compressor or electric heater on and the fan motor
operating on low, medium or high speed.
The fan motor can also be operated independently on
medium speed. See switch section as indicated on
decorative control panel, in Figure 7.
Figure 7: System Control Panel
NOTE:
Units will operate in constant fan in the cooling mode and
auto fan in the heating mode.
Figure 8: System Control Switch
(Heat Pump & Electric Heat Models)
Frost Probe Sensor: Disables compressor at 35 degrees
F +/- 3 degrees F
Indoor Probe Sensor: Control range is 60 degrees F to 90
degrees F +/- 2 degrees F
Indoor temperature will be displayed by pressing:
(XQ / WS Units) The Fan Speed button and the Temp Up
button.
The indoor temperature will be displayed for 10 seconds.
The display will change back to the Set Point temperature by
pressing any key button except for the On/Off button. The
indoor temperature can be viewed in all modes, including
test mode.
Keep Alive: The electronic control has a memory to retain
all functions and status as set up by the user in the event
of a power failure. Once power is restored to the unit
there is a two second delay before the fan comes on and
approximately three minutes delay before the compressor
is activated, providing that the mode was set for cooling and
the set point temperature has not been met in the room.
Low
Cool
Med
Cool
High
Cool
Low
Heat
Med
Heat
High
Heat
MAX
COOL
MAX
HEAT
Fan
Only
Off
Allow 3 min. between restarts
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