Lennox Merit MPE36 Service Manual page 29

Control switches
• Top photo: Main power
switch (note 4 red wires
are connected to this
switch to allow for the
use of an optional wall
switch)
• Middle photo: Heater
switch (Black and yellow
wires)
• Lower photo: Flame
switch (Red and black
wires)
• Perform a continuity test
to confirm that switches
are functioning properly.
Disconnect one wire
from each switch before
conducting the test.