All installations and services must be performed by qualified service personnel.
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3 flashes, then pause
pressure switch stuck open
4 flashes, then pause
open high limit switch
6 flashes, then pause
115 volt AC power reversed
7 flashes, then pause
low flame sense signal
8 flashes, then pause
check ignitor or improper grounding
Continuous flashing
Flame has been sensed when
(no pause)
no flame should be present
(no call for heat)
The LED will also flash once at power-up.
: Power must be disconnected before servicing.
