Operating instructions
98
C.C.
C.C.
C.
Relay, SPDT (single pole/double throw) is used onRelay, SPDT (single pole/double throw) is used on
Relay, SPDT (single pole/double throw) is used onRelay, SPDT (single pole/double throw) is used on
Relay, SPDT (single pole/double throw) is used on
Models 39424.601, 39115.626, 39125.601, 39335.601Models 39424.601, 39115.626, 39125.601, 39335.601
Models 39424.601, 39115.626, 39125.601, 39335.601Models 39424.601, 39115.626, 39125.601, 39335.601
Models 39424.601, 39115.626, 39125.601, 39335.601
and 39335.636.and 39335.636.
and 39335.636.and 39335.636.
and 39335.636.
On Model 39424.601 it is used to complete 115 volt AC
circuit to Circuit 2 compressor. On Models 39115.626,
39125.601, 39335.601 and 39335.636 it is a furnace
blower relay.
The relay has a 115 volt AC coil.
Terminals 1 and 3 are the coil terminals. When the coil
(terminals 1 and 3) is NOT energized (no power to
terminals 1 and 3), continuity should exist between
terminals 4 to 5; and no continuity between terminals 2
to 4.
When the coil (terminals 1 and 3) is energized (power
to terminals 1 and 3), continuity should exist between
terminals 2 to 4 and no continuity between terminals 4
to 5.
D.D.
D.D.
D.
Relay, SPST (single pole/single throw) is used onRelay, SPST (single pole/single throw) is used on
Relay, SPST (single pole/single throw) is used onRelay, SPST (single pole/single throw) is used on
Relay, SPST (single pole/single throw) is used on
Models 39115.602, 39115.616 and 39115.626Models 39115.602, 39115.616 and 39115.626
Models 39115.602, 39115.616 and 39115.626Models 39115.602, 39115.616 and 39115.626
Models 39115.602, 39115.616 and 39115.626.
On these models it is used to complete 115 volt AC
circuits to the compressor and for fan speeds.
The relay has a DC volt coil. To check the relay, first
verify AC volts have been turned off to the unit.
Next, verify the relay coil is NOT energized (no DC power). No
continuity should exist between terminals COM to NO. Ener-
gize the coil with DC volts (10 to 16). Continuity should exist
between terminals COM to NO. If the above checks are
correct, the relay is good – DO NOT replace it. If the previous
checks are not correct, the relay is defective and should be
replaced.
E.E.
E.E.
E.
Relay, SPDT (single pole/double throw) is used onRelay, SPDT (single pole/double throw) is used on
Relay, SPDT (single pole/double throw) is used onRelay, SPDT (single pole/double throw) is used on
Relay, SPDT (single pole/double throw) is used on
Models 39115.XXX, 39325.XXX, 39335.XXX andModels 39115.XXX, 39325.XXX, 39335.XXX and
Models 39115.XXX, 39325.XXX, 39335.XXX andModels 39115.XXX, 39325.XXX, 39335.XXX and
Models 39115.XXX, 39325.XXX, 39335.XXX and
39424.601.39424.601.
39424.601.39424.601.
39424.601.
On Models 39115.XXX it controls HIGH and LOW FAN
speeds. On Models 39325.XXX, 39335.XXX and
39424.601, it opens the control circuit for the fan motor
when the coil is energized.
NOTE: Incorrect wiring to the thermostat can energize the
relay coil on heat pump models 39325.XXX, 39335.XXX
and 39424.601.
The relay has a DC volt coil. To check the relay, first verify
all AC volts have been turned off to the unit.
Next, remove the wires from COM and NC terminals.
Verify the relay coil is not energized (no DC power).
Continuity should exist between terminals COM and NC
and no continuity between terminals COM and NO. Next,
energize the relay coil with DC volts (10 to 16). Continuity
should exist between terminals COM and NO and no
continuity between COM and NC. If the above checks are
correct, the relay is good – DO NOT replace it. If the above
checks are not correct, the relay is defective and should be
replaced.