Troubleshooting Flowchart - Napoleon WPV-N Série Instructions D'installation Et D'opération

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19.3

TROUBLESHOOTING FLOWCHART

IOM
IOM
Call For High Heat
Air Proving Switch
Proved Closed Within 30
Seconds
YES
High Stage Main Valve
Opens Circulating Air
Fan To High Heat Speed
High Heat Call Ends Low
Heat Demand Remains
High Stage Main Valve
And Call For High Heat
Circulating Air Fan De-
Energized
W415-2308 / B / 11.04.19
SEQUENCE OF OPERATION
Troubleshooting Flowchart
Apply Power To Furnace
Thermostat Calls For Heat
Air Proving Switches
Proved Open & Limit
Combustion Air Blower On
Air Proving Switch Proved
Closed Within 60 Seconds?
Prepurge 15 Seconds
HSI Energized 5 Seconds
(10 Seconds on Retries)
Low Main Valve Opens
Main Burner Lights And Is Sensed
Low Heat Circulating Air Fan On
NO
Five Minute Wait For
Retry.
Thermostat Call For Heat Ends
Combustion Air Blower Off After Pos t
Wait For Next Call For Heat
NO
Wait For Air Proving Switch
to Open. Flash "3"
Circuit Closed
YES
60 Minute Wait Period
NO
Combustion Air Blower Off
YES
30 Seconds Between
NO
Low Main Valve Closes
During Trial For Ignition?
YES
HSI De-Energized
Failed Trials For Ignition
Less Than Four During
This Ignition Sequence?
After Programmed Delay
YES
Low Main Valve Closes
Flame Sense Lost?
NO
Flame Sense Lost More Than Four
Times In This Call For Heat?
Low Main Valve Closes
Purge (5 Seconds)
Circulating Air Fan Off After
Programmed Delay
Wait For Limit Circuit
to Close and/or Reset
of Flame Rollout.
Flash "1"
Flash "2"
Trial Purge
1 Hour Lockout Reset
Delay. Flash "4"
Circulating Air Fan Off
After Programmed
YES
Combustion Air Blower
Off After Post Purge
NO
NO
YES
H23.3.2
Delay