CI500 / CI750 Diagnostics
* Flash pattern observed during diagnostic mode (Hold Reset Button for more than 3 seconds).
PROBLEMS
2 times
Foreman Ductable Dual Fuel Indirect-Fired Heater
Solenoid did not open
Solenoid opens, but gas is not
detected or ignited
Ignition occurs, then goes out
Solenoid opens, gas is
detected, no ignition.
Owner's Manual • Foreman
CAUSE
Check for power to solenoid
Defective solenoid
Open all gas supply valves
Supply proper gas pressure
Air in gas supply. Purge the air
Defective burner circuit board
Check flame sensor for cracks
Check flame sense connection
Check flame sensor location
Ground fault issue, poor ground
Improper electrical polarity
Flame sensor touching metal
Check igniter cable
Check igniter gap
Broken insulator on igniter
Defective ignition transformer
No power to ignition transformer
SOLUTION
33