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IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
Light Signal
Off
1 Flash
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
ON
Circulator
Blower
OFF
ON
Gas Valve
OFF
Igniter
ON
OFF
Induced
ON
Draft
Blower
OFF
Thermostat
Seconds
Circulator
Blower
Outdoor Fan
and
Compressor
Thermostat
(SINGLE STAGE MODELS ONLY)
Refer to Abnormal Heating or Cooling Operation Sections of this Manual
Internal Control Failure
External Lockout
Pressure Switch Stuck Open
Pressure Switch Stuck Closed
Thermal Protection Device Open
Flame Detected with Gas Valve Closed
Short Cycle Compressor Delay (Cooling Only)
HEATING TIMING CHART
0
15
22
45
COOLING TIMING CHART
ON
OFF
ON
OFF
ON
OFF
52
0
26
100 %
29
120, 135,150
100%
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