Control Panel Sw Itches; Control Board - Lennox Merit MPE36 Service Manual

Continuity test: control
panel switches
• Earlier production models of the
MPE-36R have switches that
were soldered to their wires
rather than the push on
connector that are used on later
models.
• To test these soldered switches:
– See page 21 of the manual for the
location of the sw itch connector at
the control board.
– Remove the connector from the

control board.

– Set your multimeter to Ohms and
conduct a continuity test of the
w ires and sw itch.
– When the sw itch is "off"/open the
multimeter w ill display "1" .
– When the sw itch is "on"/closed the
multimeter should display a
measure of resistance (0.1
approx.)
• If the multimeter displays "1" with
the switch in the "on" setting, the
switch is defective and must be
replaced.
• If you suspect a defective
switch, test the switch 6 – 10
times to confirm proper
operation and reliability.