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T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g
DEFINITION
An error has occurred with the PS2, indica ng that the
pressure switch is closed when it should be open.
In most cases, the pressure switch is not the problem.
NOTE: Verify pressure switch wiring and tube rou ng are
correct.
108
Cycle power OFF, then ON to
Replace pressure
NO
switch
3.3 Fault Code
the furnace
Is PS2 oriented
correctly for the
NO
applica on?
YES
Is 24 volts present,
measured across PS2?
YES
(brown to yellow)?
See Note #1
Note #1
24 volts = Open Switch
0 volts = Closed Switch
Correct orienta on
See this document
Verify wiring
S9V2-SVX001-1A-EN
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