Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
MODE (SYSTEM) SWITCH
Refer to page 4-2 for the procedure for servic-
ing the mode (system) switch.
1.
Unplug air conditioner or disconnect power.
2.
Disconnect the wires from the mode switch
terminals.
3.
Set the ohmmeter to the R x 1 scale.
4.
To check the switch contact operation,
touch the ohmmeter test leads to the switch
terminals shown in the following charts:
SWITCH CONTINUITY
SWITCH POSITION CONTACTS MADE
OFF
LOW COOL
COM - L2
HIGH COOL
COM - L2
SWITCH CONTINUITY
SWITCH POSITION CONTACTS MADE
OFF
NONE
L1 - 2
FAN ONLY
5 - 3
4 - 6
L - 9
HIGH HEAT
L1 - 2
5 - 3
4 - 6
H - 9
LOW HEAT
Electrical Shock Hazard
HEAT ANTICIPATOR
Refer to page 4-2 for the procedure for servic-
ing the heat anticipator.
1.
Unplug air conditioner or disconnect power.
2.
Disconnect the heat anticipator wires from
the mode switch terminals.
3.
Set the ohmmeter to the R x 10K scale.
4.
Touch the ohmmeter test leads to the
ends of the orange heat anticipator wires.
The meter should indicate approximately
56 K Ω .
NONE
8 - H
COM - L2
L1 - 8
L1 - 2
5 - 1
7 - 6
H - 9
COM - L2
L1 - 2
5 - 1
7 - 6
L - 9
COM - L2
5-2
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