Filter
Top Products
44
SECTION IX
PROCEDURE FOR FUNCTIONAL CHECK
OF REPLACEMENT COMPONENTS
1. For Heat Control Module Ignition Circuit
a. For Models with Direct Spark Ignition (DSI) Module (Type I)
Theory of Operation:
Start the drying cycle. When the gas burner ignites within the
chosen trial for ignition time (6-seconds), the flame sensor
detects gas burner flame and signals the DSI module to keep
the gas valve open as long as there is a call for heat. The DSI
module will “LOCKOUT” if the gas burner flame is not sensed
at the end of the trial for ignition period. The trial for ignition
period will be repeated for a total of three (3) retries/trials (the
initial try and two [2] more retries/trials). If the flame is not
sensed at the end of the third retry/trial (inter-purge period of
30-seconds), the DSI module will “LOCKOUT” (light emitting
diode [L.E.D.] diagnostic indicator flashes).
A steady L.E.D. indicator indicates normal operation.
No L.E.D. indicator indicates a power or an internal failure has occurred.
b. For Models with DSI Module (Type II)
Theory of Operation:
Start the drying cycle. When the gas burner ignites within the
chosen trial for ignition time (8-seconds), the flame sensor
detects gas burner flame and signals the DSI module to keep
the gas valve open as long as there is a call for heat. The DSI
module will “LOCKOUT” if the gas burner flame is not sensed
at the end of the trial for ignition period. The trial for ignition
period will be repeated for a total of three (3) retries/trials (the
initial try and two [2] more retries/trials). If the flame is not
sensed at the end of the third retry/trial (inter-purge period of
30-seconds), the DSI module will “LOCKOUT” (a red L.E.D.
diagnostic indicator will flash).
An unlit red L.E.D. diagnostic indicator indicates normal operation.
A lit green L.E.D. diagnostic indicator indicates dryer controller is calling for heat and that ALL interlocks