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Figure 8: System Control Switch
(Heat Pump & Electric Heat Models)
Fan
Only
Off
Low
Cool
Low
Heat
Med
Cool
Med
Heat
High
Heat
High
Cool
MAX
HEAT
MAX
COOL
!
Allow 3 min. between restarts
SYSTEM CONTROL SWITCH - TEST
Disconnect leads from control switch. Turn control to
position 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”.
FOR UNITS WITH ROTARY CONTROLS
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
rotom naf eht dna no retaeh cirtcele ro rosserpmoc eht
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.
ELECTRIC SHOCK HAZARD
WARNING
Disconnect power to the unit before
servicing. Failure to follow this warning
could result in serious injury or death.
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