Friedrich 2003 service manual System Control Switch KS, SS, KM, SM, SL Models See Figure

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" and "M".

Figure 21

System Control Switch

Heat Pump / Electric Heat

(WE & WY Models)

SYSTEM CONTROL SWITCH KS, SS, KM, SM, SL Models (See Figure 22)

A five position control switch is used to regulate the operation of the fan motor and compressor. The compressor can be operated with the fan operating at 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.

Figure 22

System Control Panel (KS, SS, KM, SM, SL)

SYSTEM CONTROL SWITCH - TEST (See Figure 23) Disconnect leads from control switch. There must be continuity as follows:

1."Off" Position - no continuity between terminals.

2."Lo Cool" Position - between terminals "L1" and "C," "LO" and "MS."

3."Med Cool" Position - between terminals "L1" and "C," "M" and "MS."

4."Hi Cool" Position - between terminals "L1" and "C," "H"and "MS."

5."Fan Only" Position - between terminals "L1" and "2."

Figure 23

System Control Switch

SYSTEM CONTROL PANEL (See Figure 24)

A six-position control switch is used to regulate the operation of the fan motor and compressor. The compressor can be operated with the fan operating at 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.

Figure 24

System Control Panel - Deluxe Series (RS & RM)

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