Page 24
The ignition control contains a green LED which indicates
the following:
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LED
UNIT OPERATION
Slow Flash*
Normal Operation - No call for heat
Fast Flash
Normal Operation - Call for heat
2 Flashes
System lockout - failed to detect or sustain flame
3 Flashes
Pressure switch failed closed before CAI
is energized or failed open after CAI is
energized
4 Flashes
High limit (S10) switch open
5 Flashes
Flame sensed and gas valve (GV1) not energized
6 Flashes
On-board microprocessor fault.
7 Flashes
Pressure switch (S18) closed with inducer off.
8 Flashes
Rollout switch (S47/S195) open. Cycle-power to reset.
Steady On
Control board (A3) failure
Steady Off
Internal control board (A3) failure or not power.
In Canada, certification for installation at altitudes
over 4500 feet (1372m) above sea level is the
jurisdiction of local authorities. ADP recommends
derating 4 /1000 feet above 4,500 feet. Refer to
table 6 for natural gas manifold pressures and the
Engineering Handbook for high altitude kit part
numbers.
Units may be fired at full input up to 2000 feet.
(610m) above sea level. Above 2000 feet (610m),
manifold pressure must be adjusted. Adjust
pressure regulator
to
pressure
shown
in
table 5.
In the US, units may be fired at full input up to 2000 feet
(610m) above sea level. Above 2000 feet (610m), unit
must be de-rated by four percent per 1000 feet for instal-
lation above 2000 feet. The de-rate may be accomplished
by adjusting the manifold pressure. See table 8 for NG &
table 8 for LP gas manifold pressures. See the
Engineering Handbook for high altitude kit part numbers.
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