25
Five Times
Burner Flame
is Sensed
Before Ignition
Trial Occurs.
Is
Gas Leaking
Through the Gas
Control
Valve?
No
Yes
Replace Gas Control Valve.
Replace Ignition Control Module.
Is
Ignition Control
Sending Voltage to Gas
Control Valve Before
an Ignition
Trial?
Yes
IMPORTANT NOTES:
(1)
With any electrical problem, all wiring should be checked for good connections and proper voltage.
(2)
To determine if part is defective, place a jumper wire across the two terminals that the wires are connected to. DO NOT leave the jumper wire on and operate if part is defective. Replace
component IMMEDIATELY or do not operate unit.
(3)
The ignition control module sends and receives voltages throughout the entire operation sequence. The ignition control module terminals should also be checked for delivering proper voltages in
addition to the individual components as indicated by the respective flash pattern to make sure the board itself is working properly.
(4)
The high limit switch will “open” for a number of reasons. Common problems associated with this are high gas pressure, low voltage, loose or dirty fans, restrictions/blockages at air inlets or outlets, or
excessive dust and dirt accumulations in the heater.